./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 --- 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-b5237d8 [2022-11-22 01:51:59,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:51:59,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:51:59,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:51:59,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:51:59,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:51:59,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:51:59,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:51:59,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:51:59,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:51:59,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:51:59,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:51:59,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:51:59,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:51:59,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:51:59,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:51:59,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:51:59,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:51:59,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:51:59,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:51:59,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:51:59,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:51:59,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:51:59,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:52:00,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:52:00,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:52:00,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:52:00,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:52:00,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:52:00,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:52:00,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:52:00,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:52:00,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:52:00,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:52:00,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:52:00,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:52:00,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:52:00,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:52:00,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:52:00,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:52:00,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:52:00,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:52:00,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:52:00,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:52:00,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:52:00,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:52:00,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:52:00,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:52:00,052 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:52:00,053 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:52:00,053 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:52:00,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:52:00,054 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:52:00,055 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:52:00,055 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:52:00,055 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:52:00,055 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:52:00,055 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:52:00,056 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:52:00,056 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:52:00,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:52:00,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:52:00,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:52:00,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:52:00,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:52:00,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:52:00,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:52:00,066 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:52:00,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:52:00,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:52:00,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:52:00,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:00,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:52:00,067 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:52:00,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:52:00,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:52:00,068 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:52:00,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:52:00,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:52:00,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:52:00,069 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_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 [2022-11-22 01:52:00,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:52:00,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:52:00,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:52:00,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:52:00,402 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:52:00,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:03,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:52:03,885 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:52:03,889 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:03,899 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/94fcf72e3/c4c6f1e76f9044ccb0434b19e2924d8d/FLAG817b6d8bf [2022-11-22 01:52:03,913 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/94fcf72e3/c4c6f1e76f9044ccb0434b19e2924d8d [2022-11-22 01:52:03,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:52:03,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:52:03,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:03,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:52:03,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:52:03,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:03" (1/1) ... [2022-11-22 01:52:03,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657b4aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:03, skipping insertion in model container [2022-11-22 01:52:03,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:03" (1/1) ... [2022-11-22 01:52:03,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:52:03,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:52:04,127 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_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-11-22 01:52:04,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:04,431 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:52:04,443 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_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-11-22 01:52:04,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:04,585 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:52:04,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04 WrapperNode [2022-11-22 01:52:04,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:04,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:04,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:52:04,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:52:04,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,699 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 887 [2022-11-22 01:52:04,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:04,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:52:04,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:52:04,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:52:04,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:52:04,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:52:04,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:52:04,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:52:04,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (1/1) ... [2022-11-22 01:52:04,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:04,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:52:04,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:52:04,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:52:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:52:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:52:05,332 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:52:05,334 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:52:39,024 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:52:39,046 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:52:39,046 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:52:39,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:39 BoogieIcfgContainer [2022-11-22 01:52:39,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:52:39,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:52:39,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:52:39,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:52:39,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:52:03" (1/3) ... [2022-11-22 01:52:39,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ae883a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:39, skipping insertion in model container [2022-11-22 01:52:39,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:04" (2/3) ... [2022-11-22 01:52:39,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ae883a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:39, skipping insertion in model container [2022-11-22 01:52:39,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:39" (3/3) ... [2022-11-22 01:52:39,058 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:39,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:52:39,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:52:39,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:52:39,128 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;@6b5a9fe3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:52:39,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:52:39,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:52:39,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:52:39,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:39,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:52:39,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:39,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 01:52:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:52:39,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107490372] [2022-11-22 01:52:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:52:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:52:39,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:52:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:52:39,596 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:52:39,598 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:52:39,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:52:39,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:52:39,606 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 01:52:39,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:52:39,647 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 01:52:39,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:52:39 BoogieIcfgContainer [2022-11-22 01:52:39,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:52:39,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:52:39,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:52:39,663 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:52:39,664 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:39" (3/4) ... [2022-11-22 01:52:39,667 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:52:39,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:52:39,669 INFO L158 Benchmark]: Toolchain (without parser) took 35752.19ms. Allocated memory was 167.8MB in the beginning and 725.6MB in the end (delta: 557.8MB). Free memory was 133.5MB in the beginning and 345.1MB in the end (delta: -211.6MB). Peak memory consumption was 347.8MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,670 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:52:39,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.20ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 99.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,672 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.19ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 87.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,678 INFO L158 Benchmark]: Boogie Preprocessor took 229.15ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 87.3MB in the beginning and 193.2MB in the end (delta: -105.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,678 INFO L158 Benchmark]: RCFGBuilder took 34119.16ms. Allocated memory was 232.8MB in the beginning and 725.6MB in the end (delta: 492.8MB). Free memory was 193.2MB in the beginning and 377.6MB in the end (delta: -184.3MB). Peak memory consumption was 437.7MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,680 INFO L158 Benchmark]: TraceAbstraction took 609.20ms. Allocated memory is still 725.6MB. Free memory was 376.5MB in the beginning and 345.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-22 01:52:39,680 INFO L158 Benchmark]: Witness Printer took 6.26ms. Allocated memory is still 725.6MB. Free memory is still 345.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:52:39,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 668.20ms. Allocated memory is still 167.8MB. Free memory was 133.5MB in the beginning and 99.4MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.19ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 87.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 229.15ms. Allocated memory was 167.8MB in the beginning and 232.8MB in the end (delta: 65.0MB). Free memory was 87.3MB in the beginning and 193.2MB in the end (delta: -105.9MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * RCFGBuilder took 34119.16ms. Allocated memory was 232.8MB in the beginning and 725.6MB in the end (delta: 492.8MB). Free memory was 193.2MB in the beginning and 377.6MB in the end (delta: -184.3MB). Peak memory consumption was 437.7MB. Max. memory is 16.1GB. * TraceAbstraction took 609.20ms. Allocated memory is still 725.6MB. Free memory was 376.5MB in the beginning and 345.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.26ms. Allocated memory is still 725.6MB. Free memory is still 345.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 145, overapproximation of bitwiseAnd at line 115. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_16 = 0; [L39] const SORT_4 var_39 = 1; [L40] const SORT_4 var_40 = 0; [L41] const SORT_2 var_47 = 1; [L42] const SORT_3 var_49 = 0; [L43] const SORT_4 var_52 = 2; [L44] const SORT_2 var_62 = 0; [L46] SORT_1 input_48; [L47] SORT_1 input_56; [L48] SORT_1 input_63; [L49] SORT_1 input_69; [L50] SORT_1 input_95; [L51] SORT_1 input_99; [L52] SORT_1 input_102; [L53] SORT_1 input_103; [L54] SORT_1 input_109; [L55] SORT_1 input_115; [L56] SORT_1 input_130; [L57] SORT_1 input_148; [L59] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L60] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L61] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L62] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L63] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L64] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L67] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_2 init_7_arg_1 = var_5; [L77] state_6 = init_7_arg_1 [L78] SORT_2 init_9_arg_1 = var_5; [L79] state_8 = init_9_arg_1 [L80] SORT_2 init_11_arg_1 = var_5; [L81] state_10 = init_11_arg_1 [L82] SORT_2 init_13_arg_1 = var_5; [L83] state_12 = init_13_arg_1 [L84] SORT_2 init_15_arg_1 = var_5; [L85] state_14 = init_15_arg_1 [L86] SORT_1 init_18_arg_1 = var_16; [L87] state_17 = init_18_arg_1 [L88] SORT_1 init_20_arg_1 = var_16; [L89] state_19 = init_20_arg_1 [L90] SORT_1 init_22_arg_1 = var_16; [L91] state_21 = init_22_arg_1 [L92] SORT_1 init_24_arg_1 = var_16; [L93] state_23 = init_24_arg_1 [L94] SORT_1 init_26_arg_1 = var_16; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_16; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_30_arg_1 = var_16; [L99] state_29 = init_30_arg_1 [L100] SORT_1 init_32_arg_1 = var_16; [L101] state_31 = init_32_arg_1 [L102] SORT_1 init_34_arg_1 = var_16; [L103] state_33 = init_34_arg_1 [L104] SORT_1 init_36_arg_1 = var_16; [L105] state_35 = init_36_arg_1 [L106] SORT_1 init_38_arg_1 = var_16; [L107] state_37 = init_38_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_6=0, state_8=0, var_16=0, var_39=1, var_40=0, var_47=1, var_49=0, var_5=0, var_52=2, var_62=0] [L110] input_48 = __VERIFIER_nondet_uchar() [L111] input_56 = __VERIFIER_nondet_uchar() [L112] input_63 = __VERIFIER_nondet_uchar() [L113] input_69 = __VERIFIER_nondet_uchar() [L114] input_95 = __VERIFIER_nondet_uchar() [L115] input_95 = input_95 & mask_SORT_1 [L116] input_99 = __VERIFIER_nondet_uchar() [L117] input_99 = input_99 & mask_SORT_1 [L118] input_102 = __VERIFIER_nondet_uchar() [L119] input_102 = input_102 & mask_SORT_1 [L120] input_103 = __VERIFIER_nondet_uchar() [L121] input_103 = input_103 & mask_SORT_1 [L122] input_109 = __VERIFIER_nondet_uchar() [L123] input_109 = input_109 & mask_SORT_1 [L124] input_115 = __VERIFIER_nondet_uchar() [L125] input_115 = input_115 & mask_SORT_1 [L126] input_130 = __VERIFIER_nondet_uchar() [L127] input_148 = __VERIFIER_nondet_uchar() [L130] SORT_1 var_41_arg_0 = state_25; [L131] SORT_4 var_41_arg_1 = var_39; [L132] SORT_4 var_41_arg_2 = var_40; [L133] SORT_4 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L134] SORT_1 var_42_arg_0 = state_35; [L135] SORT_4 var_42_arg_1 = var_39; [L136] SORT_4 var_42_arg_2 = var_40; [L137] SORT_4 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L138] SORT_4 var_43_arg_0 = var_41; [L139] SORT_4 var_43_arg_1 = var_42; [L140] SORT_4 var_43 = var_43_arg_0 + var_43_arg_1; [L141] var_43 = var_43 & mask_SORT_4 [L142] SORT_4 var_44_arg_0 = var_43; [L143] SORT_4 var_44_arg_1 = var_39; [L144] SORT_1 var_44 = var_44_arg_0 <= var_44_arg_1; [L145] SORT_1 var_45_arg_0 = ~state_37; [L146] var_45_arg_0 = var_45_arg_0 & mask_SORT_1 [L147] SORT_1 var_45_arg_1 = ~var_44; [L148] var_45_arg_1 = var_45_arg_1 & mask_SORT_1 [L149] SORT_1 var_45 = var_45_arg_0 & var_45_arg_1; [L150] var_45 = var_45 & mask_SORT_1 [L151] SORT_1 bad_46_arg_0 = var_45; [L152] CALL __VERIFIER_assert(!(bad_46_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 01:52:39,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 --- 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-b5237d8 [2022-11-22 01:52:42,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:52:42,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:52:42,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:52:42,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:52:42,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:52:42,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:52:42,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:52:42,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:52:42,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:52:42,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:52:42,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:52:42,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:52:42,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:52:42,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:52:42,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:52:42,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:52:42,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:52:42,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:52:42,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:52:42,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:52:42,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:52:42,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:52:42,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:52:42,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:52:42,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:52:42,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:52:42,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:52:42,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:52:42,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:52:42,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:52:42,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:52:42,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:52:42,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:52:42,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:52:42,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:52:42,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:52:42,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:52:42,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:52:42,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:52:42,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:52:42,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 01:52:42,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:52:42,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:52:42,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:52:42,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:52:42,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:52:42,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:52:42,370 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:52:42,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:52:42,371 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:52:42,371 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:52:42,372 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:52:42,372 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:52:42,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:52:42,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:52:42,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:52:42,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:52:42,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:52:42,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:52:42,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:52:42,375 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:52:42,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:52:42,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:52:42,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:52:42,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:52:42,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:52:42,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:52:42,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:42,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:52:42,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:52:42,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:52:42,378 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:52:42,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:52:42,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:52:42,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:52:42,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:52:42,379 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_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 [2022-11-22 01:52:42,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:52:42,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:52:42,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:52:42,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:52:42,795 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:52:42,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:45,799 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:52:46,151 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:52:46,154 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:46,169 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/d7f99cd8b/a407994578244c0a854847654992e8ef/FLAG0356bdd7e [2022-11-22 01:52:46,191 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/data/d7f99cd8b/a407994578244c0a854847654992e8ef [2022-11-22 01:52:46,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:52:46,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:52:46,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:46,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:52:46,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:52:46,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:46,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@230e1a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46, skipping insertion in model container [2022-11-22 01:52:46,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:46,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:52:46,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:52:46,487 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_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-11-22 01:52:46,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:46,780 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:52:46,802 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_a041943d-4708-4695-90e6-cccc60ca9ae6/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-11-22 01:52:46,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:46,933 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:52:46,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46 WrapperNode [2022-11-22 01:52:46,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:46,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:46,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:52:46,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:52:46,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:46,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,020 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 887 [2022-11-22 01:52:47,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:47,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:52:47,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:52:47,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:52:47,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:52:47,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:52:47,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:52:47,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:52:47,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:47,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:47,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:52:47,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:52:47,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:52:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:52:47,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:52:47,587 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:52:47,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:52:49,508 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:52:49,514 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:52:49,514 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:52:49,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:49 BoogieIcfgContainer [2022-11-22 01:52:49,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:52:49,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:52:49,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:52:49,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:52:49,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:52:46" (1/3) ... [2022-11-22 01:52:49,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2562204b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:49, skipping insertion in model container [2022-11-22 01:52:49,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46" (2/3) ... [2022-11-22 01:52:49,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2562204b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:52:49, skipping insertion in model container [2022-11-22 01:52:49,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:52:49" (3/3) ... [2022-11-22 01:52:49,524 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-11-22 01:52:49,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:52:49,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:52:49,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:52:49,593 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;@66f2d676, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:52:49,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:52:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:52:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:52:49,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:49,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:52:49,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 01:52:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:52:49,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540278261] [2022-11-22 01:52:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:49,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 01:52:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:52:49,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 01:52:49,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 01:52:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:52:49,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:52:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:52:50,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:52:50,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:52:50,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540278261] [2022-11-22 01:52:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540278261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:52:50,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:52:50,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:52:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517488950] [2022-11-22 01:52:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:52:50,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:52:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:52:50,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:52:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:52:50,199 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:52:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:52:50,834 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 01:52:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:52:50,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 01:52:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:52:50,844 INFO L225 Difference]: With dead ends: 20 [2022-11-22 01:52:50,844 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 01:52:50,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:52:50,858 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:52:50,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:52:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 01:52:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 01:52:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:52:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 01:52:50,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 01:52:50,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:52:50,895 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 01:52:50,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:52:50,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 01:52:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:52:50,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:52:50,897 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:52:50,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:52:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 01:52:51,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:52:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:52:51,109 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 01:52:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:52:51,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674783870] [2022-11-22 01:52:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 01:52:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:52:51,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 01:52:51,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 01:52:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:52:52,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-22 01:52:52,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:52:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:52:52,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:52:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:52:58,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:52:58,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674783870] [2022-11-22 01:52:58,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674783870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:52:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810011172] [2022-11-22 01:52:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:52:58,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:52:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:52:59,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:52:59,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 01:53:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:00,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-22 01:53:00,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:01,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:32,278 WARN L233 SmtUtils]: Spent 24.51s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:53:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:32,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1810011172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:32,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565395851] [2022-11-22 01:53:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:32,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:32,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:32,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:53:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:33,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-22 01:53:33,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:33,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:33,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:54:00,160 WARN L233 SmtUtils]: Spent 22.99s on a formula simplification. DAG size of input: 80 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:54:33,576 WARN L233 SmtUtils]: Spent 24.44s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:55:02,622 WARN L233 SmtUtils]: Spent 24.41s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:55:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:02,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565395851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:55:02,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:55:02,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-11-22 01:55:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623529669] [2022-11-22 01:55:02,815 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:55:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:55:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:55:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:55:02,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=166, Unknown=9, NotChecked=0, Total=240 [2022-11-22 01:55:02,817 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:55:04,241 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-22 01:55:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:55:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 8 [2022-11-22 01:55:04,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:55:04,243 INFO L225 Difference]: With dead ends: 16 [2022-11-22 01:55:04,243 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 01:55:04,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 124.4s TimeCoverageRelationStatistics Valid=105, Invalid=228, Unknown=9, NotChecked=0, Total=342 [2022-11-22 01:55:04,244 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:55:04,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 01:55:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 01:55:04,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-22 01:55:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-22 01:55:04,250 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-22 01:55:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:55:04,250 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-22 01:55:04,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:55:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-22 01:55:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:55:04,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:55:04,252 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:55:04,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-22 01:55:04,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:55:04,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:55:04,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:55:04,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:55:04,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:55:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-22 01:55:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:55:04,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680417775] [2022-11-22 01:55:04,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:55:04,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 01:55:04,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:55:04,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 01:55:04,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 01:55:06,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:55:06,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:55:06,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 208 conjunts are in the unsatisfiable core [2022-11-22 01:55:06,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:55:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:09,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:55:23,573 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 287 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:55:51,586 WARN L233 SmtUtils]: Spent 23.09s on a formula simplification that was a NOOP. DAG size: 772 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:55:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:55:52,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:55:52,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680417775] [2022-11-22 01:55:52,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680417775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:55:52,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1272646498] [2022-11-22 01:55:52,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:55:52,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:55:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:55:52,407 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:55:52,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-22 01:55:54,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:55:54,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:55:54,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 206 conjunts are in the unsatisfiable core [2022-11-22 01:55:54,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:56:00,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:21,351 WARN L233 SmtUtils]: Spent 19.82s on a formula simplification. DAG size of input: 73 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:56:42,107 WARN L233 SmtUtils]: Spent 13.01s on a formula simplification that was a NOOP. DAG size: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:57:16,590 WARN L233 SmtUtils]: Spent 23.48s on a formula simplification that was a NOOP. DAG size: 769 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:57:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:57:17,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1272646498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:57:17,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430979897] [2022-11-22 01:57:17,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:57:17,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:57:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:57:17,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:57:17,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:57:18,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:57:18,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:57:18,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-22 01:57:18,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:57:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:57:20,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:58:32,791 WARN L233 SmtUtils]: Spent 1.15m on a formula simplification. DAG size of input: 133 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:59:32,253 WARN L233 SmtUtils]: Spent 43.88s on a formula simplification that was a NOOP. DAG size: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:13,404 WARN L233 SmtUtils]: Spent 40.04s on a formula simplification that was a NOOP. DAG size: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:00:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:00:13,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430979897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:00:13,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:00:13,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 24 [2022-11-22 02:00:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172646033] [2022-11-22 02:00:13,714 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:00:13,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:00:13,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:00:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:00:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=447, Unknown=14, NotChecked=0, Total=552 [2022-11-22 02:00:13,716 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:21,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:24,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:30,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:32,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:34,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:36,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:38,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-22 02:00:40,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 02:00:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:40,400 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-22 02:00:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:00:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 02:00:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:40,401 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:00:40,402 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:00:40,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 301.3s TimeCoverageRelationStatistics Valid=165, Invalid=576, Unknown=15, NotChecked=0, Total=756 [2022-11-22 02:00:40,403 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:40,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 54 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 7 Unknown, 0 Unchecked, 19.2s Time] [2022-11-22 02:00:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:00:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 02:00:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 02:00:40,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-22 02:00:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:40,414 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 02:00:40,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:00:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 02:00:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:00:40,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:40,415 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-22 02:00:40,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:40,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:40,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:41,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/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_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:00:41,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-22 02:00:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:00:41,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764424933] [2022-11-22 02:00:41,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:00:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:00:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:00:41,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:00:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/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 (9)] Waiting until timeout for monitored process [2022-11-22 02:00:45,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 02:00:45,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:00:45,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 472 conjunts are in the unsatisfiable core [2022-11-22 02:00:45,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:01:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:01:01,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:02:10,303 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification that was a NOOP. DAG size: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:03:23,646 WARN L233 SmtUtils]: Spent 55.33s on a formula simplification that was a NOOP. DAG size: 2310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:21,748 WARN L233 SmtUtils]: Spent 1.33m on a formula simplification that was a NOOP. DAG size: 4014 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:05:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:27,035 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:05:27,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764424933] [2022-11-22 02:05:27,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764424933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:05:27,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [617947101] [2022-11-22 02:05:27,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:05:27,036 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:05:27,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:05:27,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:05:27,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a041943d-4708-4695-90e6-cccc60ca9ae6/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-22 02:05:30,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 02:05:30,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:05:30,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 203 conjunts are in the unsatisfiable core [2022-11-22 02:05:30,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:05:53,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:27,978 WARN L233 SmtUtils]: Spent 29.53s on a formula simplification. DAG size of input: 73 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:11,850 WARN L233 SmtUtils]: Spent 34.77s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)