./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.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_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 9624ba816941bfede66f01542dce3f33a9c079124b33387d166af076651564ba --- 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 01:47:29,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:47:29,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:47:29,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:47:29,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:47:29,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:47:29,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:47:29,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:47:29,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:47:29,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:47:29,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:47:29,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:47:29,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:47:29,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:47:29,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:47:29,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:47:29,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:47:29,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:47:29,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:47:29,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:47:29,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:47:29,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:47:29,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:47:29,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:47:29,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:47:29,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:47:29,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:47:29,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:47:29,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:47:29,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:47:29,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:47:29,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:47:29,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:47:29,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:47:29,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:47:29,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:47:29,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:47:29,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:47:29,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:47:29,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:47:29,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:47:29,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:47:29,158 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:47:29,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:47:29,159 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:47:29,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:47:29,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:47:29,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:47:29,160 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:47:29,161 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:47:29,161 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:47:29,161 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:47:29,162 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:47:29,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:47:29,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:47:29,163 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:47:29,163 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:47:29,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:47:29,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:47:29,164 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:47:29,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:47:29,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:47:29,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:47:29,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:47:29,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:47:29,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:47:29,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:47:29,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:47:29,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:47:29,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:47:29,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:47:29,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:47:29,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:47:29,167 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:47:29,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:47:29,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:47:29,168 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:47:29,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:47:29,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:47:29,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:47:29,169 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9624ba816941bfede66f01542dce3f33a9c079124b33387d166af076651564ba [2022-11-22 01:47:29,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:47:29,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:47:29,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:47:29,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:47:29,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:47:29,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:47:32,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:47:32,930 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:47:32,931 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:47:32,945 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/0aedd0c6c/67b4ef04ff44403f87149fd768e2d93f/FLAG1e325fa9b [2022-11-22 01:47:33,111 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/0aedd0c6c/67b4ef04ff44403f87149fd768e2d93f [2022-11-22 01:47:33,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:47:33,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:47:33,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:47:33,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:47:33,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:47:33,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:33" (1/1) ... [2022-11-22 01:47:33,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f6dad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:33, skipping insertion in model container [2022-11-22 01:47:33,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:33" (1/1) ... [2022-11-22 01:47:33,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:47:33,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:47:33,395 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1107,1120] [2022-11-22 01:47:33,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:47:33,834 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:47:33,846 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1107,1120] [2022-11-22 01:47:34,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:47:34,081 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:47:34,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34 WrapperNode [2022-11-22 01:47:34,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:47:34,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:47:34,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:47:34,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:47:34,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,290 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1801 [2022-11-22 01:47:34,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:47:34,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:47:34,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:47:34,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:47:34,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:47:34,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:47:34,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:47:34,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:47:34,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (1/1) ... [2022-11-22 01:47:34,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:47:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:47:34,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:47:34,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:47:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:47:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:47:35,044 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:47:35,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:50:16,080 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:50:16,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:50:16,133 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:50:16,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:16 BoogieIcfgContainer [2022-11-22 01:50:16,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:50:16,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:50:16,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:50:16,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:50:16,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:47:33" (1/3) ... [2022-11-22 01:50:16,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:16, skipping insertion in model container [2022-11-22 01:50:16,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:34" (2/3) ... [2022-11-22 01:50:16,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:16, skipping insertion in model container [2022-11-22 01:50:16,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:16" (3/3) ... [2022-11-22 01:50:16,149 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:50:16,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:50:16,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:50:16,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:50:16,242 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;@2f42b4ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:50:16,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:50:16,248 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 01:50:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:50:16,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:16,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:50:16,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:16,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-22 01:50:16,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:16,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145778614] [2022-11-22 01:50:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:50:16,716 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:50:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:50:17,033 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:50:17,035 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:50:17,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:50:17,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:50:17,047 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-22 01:50:17,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:50:17,091 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-22 01:50:17,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:50:17 BoogieIcfgContainer [2022-11-22 01:50:17,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:50:17,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:50:17,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:50:17,115 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:50:17,117 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:16" (3/4) ... [2022-11-22 01:50:17,120 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:50:17,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:50:17,122 INFO L158 Benchmark]: Toolchain (without parser) took 164007.26ms. Allocated memory was 159.4MB in the beginning and 736.1MB in the end (delta: 576.7MB). Free memory was 122.2MB in the beginning and 453.5MB in the end (delta: -331.3MB). Peak memory consumption was 248.1MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,122 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:50:17,123 INFO L158 Benchmark]: CACSL2BoogieTranslator took 966.65ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 63.1MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.07ms. Allocated memory is still 159.4MB. Free memory was 63.1MB in the beginning and 112.6MB in the end (delta: -49.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,125 INFO L158 Benchmark]: Boogie Preprocessor took 162.90ms. Allocated memory is still 159.4MB. Free memory was 112.6MB in the beginning and 103.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,130 INFO L158 Benchmark]: RCFGBuilder took 161679.71ms. Allocated memory was 159.4MB in the beginning and 736.1MB in the end (delta: 576.7MB). Free memory was 103.2MB in the beginning and 515.4MB in the end (delta: -412.1MB). Peak memory consumption was 443.3MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,132 INFO L158 Benchmark]: TraceAbstraction took 973.65ms. Allocated memory is still 736.1MB. Free memory was 514.3MB in the beginning and 453.5MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-22 01:50:17,133 INFO L158 Benchmark]: Witness Printer took 5.86ms. Allocated memory is still 736.1MB. Free memory is still 453.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:50:17,140 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 113.2MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 966.65ms. Allocated memory is still 159.4MB. Free memory was 122.2MB in the beginning and 63.1MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 209.07ms. Allocated memory is still 159.4MB. Free memory was 63.1MB in the beginning and 112.6MB in the end (delta: -49.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 162.90ms. Allocated memory is still 159.4MB. Free memory was 112.6MB in the beginning and 103.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 161679.71ms. Allocated memory was 159.4MB in the beginning and 736.1MB in the end (delta: 576.7MB). Free memory was 103.2MB in the beginning and 515.4MB in the end (delta: -412.1MB). Peak memory consumption was 443.3MB. Max. memory is 16.1GB. * TraceAbstraction took 973.65ms. Allocated memory is still 736.1MB. Free memory was 514.3MB in the beginning and 453.5MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 5.86ms. Allocated memory is still 736.1MB. Free memory is still 453.5MB. 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 209, overapproximation of bitwiseOr at line 219, overapproximation of bitwiseAnd at line 183. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 3); [L32] const SORT_9 msb_SORT_9 = (SORT_9)1 << (3 - 1); [L34] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 2); [L35] const SORT_13 msb_SORT_13 = (SORT_13)1 << (2 - 1); [L37] const SORT_48 mask_SORT_48 = (SORT_48)-1 >> (sizeof(SORT_48) * 8 - 12); [L38] const SORT_48 msb_SORT_48 = (SORT_48)1 << (12 - 1); [L40] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 17); [L41] const SORT_86 msb_SORT_86 = (SORT_86)1 << (17 - 1); [L43] const SORT_87 mask_SORT_87 = (SORT_87)-1 >> (sizeof(SORT_87) * 8 - 5); [L44] const SORT_87 msb_SORT_87 = (SORT_87)1 << (5 - 1); [L46] const SORT_90 mask_SORT_90 = (SORT_90)-1 >> (sizeof(SORT_90) * 8 - 9); [L47] const SORT_90 msb_SORT_90 = (SORT_90)1 << (9 - 1); [L49] const SORT_92 mask_SORT_92 = (SORT_92)-1 >> (sizeof(SORT_92) * 8 - 10); [L50] const SORT_92 msb_SORT_92 = (SORT_92)1 << (10 - 1); [L52] const SORT_95 mask_SORT_95 = (SORT_95)-1 >> (sizeof(SORT_95) * 8 - 11); [L53] const SORT_95 msb_SORT_95 = (SORT_95)1 << (11 - 1); [L55] const SORT_100 mask_SORT_100 = (SORT_100)-1 >> (sizeof(SORT_100) * 8 - 13); [L56] const SORT_100 msb_SORT_100 = (SORT_100)1 << (13 - 1); [L58] const SORT_103 mask_SORT_103 = (SORT_103)-1 >> (sizeof(SORT_103) * 8 - 14); [L59] const SORT_103 msb_SORT_103 = (SORT_103)1 << (14 - 1); [L61] const SORT_106 mask_SORT_106 = (SORT_106)-1 >> (sizeof(SORT_106) * 8 - 15); [L62] const SORT_106 msb_SORT_106 = (SORT_106)1 << (15 - 1); [L64] const SORT_139 mask_SORT_139 = (SORT_139)-1 >> (sizeof(SORT_139) * 8 - 7); [L65] const SORT_139 msb_SORT_139 = (SORT_139)1 << (7 - 1); [L67] const SORT_372 mask_SORT_372 = (SORT_372)-1 >> (sizeof(SORT_372) * 8 - 4); [L68] const SORT_372 msb_SORT_372 = (SORT_372)1 << (4 - 1); [L70] const SORT_375 mask_SORT_375 = (SORT_375)-1 >> (sizeof(SORT_375) * 8 - 6); [L71] const SORT_375 msb_SORT_375 = (SORT_375)1 << (6 - 1); [L73] const SORT_378 mask_SORT_378 = (SORT_378)-1 >> (sizeof(SORT_378) * 8 - 8); [L74] const SORT_378 msb_SORT_378 = (SORT_378)1 << (8 - 1); [L76] const SORT_3 var_6 = 0; [L77] const SORT_9 var_11 = 3; [L78] const SORT_13 var_15 = 1; [L79] const SORT_9 var_23 = 0; [L80] const SORT_1 var_37 = 1; [L81] const SORT_1 var_43 = 0; [L82] const SORT_48 var_49 = 0; [L83] const SORT_9 var_62 = 2; [L84] const SORT_9 var_66 = 1; [L85] const SORT_9 var_71 = 4; [L86] const SORT_9 var_73 = 5; [L87] const SORT_87 var_88 = 0; [L88] const SORT_139 var_141 = 5; [L89] const SORT_139 var_145 = 4; [L90] const SORT_139 var_149 = 3; [L91] const SORT_139 var_153 = 2; [L92] const SORT_139 var_157 = 1; [L93] const SORT_139 var_161 = 0; [L94] const SORT_48 var_200 = 2; [L95] const SORT_13 var_216 = 0; [L96] const SORT_3 var_223 = 65535; [L98] SORT_1 input_2; [L99] SORT_3 input_4; [L100] SORT_3 input_5; [L101] SORT_3 input_212; [L102] SORT_3 input_213; [L103] SORT_3 input_214; [L104] SORT_3 input_222; [L105] SORT_3 input_230; [L106] SORT_3 input_231; [L107] SORT_3 input_232; [L108] SORT_3 input_235; [L109] SORT_3 input_253; [L110] SORT_3 input_254; [L111] SORT_3 input_255; [L112] SORT_3 input_258; [L113] SORT_3 input_260; [L114] SORT_13 input_274; [L115] SORT_13 input_275; [L116] SORT_13 input_276; [L118] SORT_3 state_7 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L119] SORT_9 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_9; [L120] SORT_3 state_28 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L121] SORT_3 state_30 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L122] SORT_3 state_41 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L123] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_3 state_46 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L125] SORT_48 state_50 = __VERIFIER_nondet_ushort() & mask_SORT_48; [L126] SORT_48 state_52 = __VERIFIER_nondet_ushort() & mask_SORT_48; [L127] SORT_3 state_54 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L128] SORT_3 state_56 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L129] SORT_3 state_58 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L130] SORT_3 state_60 = __VERIFIER_nondet_ushort() & mask_SORT_3; [L132] SORT_3 init_8_arg_1 = var_6; [L133] state_7 = init_8_arg_1 [L134] SORT_9 init_25_arg_1 = var_23; [L135] state_24 = init_25_arg_1 [L136] SORT_3 init_29_arg_1 = var_6; [L137] state_28 = init_29_arg_1 [L138] SORT_3 init_31_arg_1 = var_6; [L139] state_30 = init_31_arg_1 [L140] SORT_3 init_42_arg_1 = var_6; [L141] state_41 = init_42_arg_1 [L142] SORT_1 init_45_arg_1 = var_43; [L143] state_44 = init_45_arg_1 [L144] SORT_3 init_47_arg_1 = var_6; [L145] state_46 = init_47_arg_1 [L146] SORT_48 init_51_arg_1 = var_49; [L147] state_50 = init_51_arg_1 [L148] SORT_48 init_53_arg_1 = var_49; [L149] state_52 = init_53_arg_1 [L150] SORT_3 init_55_arg_1 = var_6; [L151] state_54 = init_55_arg_1 [L152] SORT_3 init_57_arg_1 = var_6; [L153] state_56 = init_57_arg_1 [L154] SORT_3 init_59_arg_1 = var_6; [L155] state_58 = init_59_arg_1 [L156] SORT_3 init_61_arg_1 = var_6; [L157] state_60 = init_61_arg_1 VAL [init_25_arg_1=0, init_29_arg_1=0, init_31_arg_1=0, init_42_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_51_arg_1=0, init_53_arg_1=0, init_55_arg_1=0, init_57_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_100=8191, mask_SORT_103=16383, mask_SORT_106=32767, mask_SORT_13=3, mask_SORT_139=127, mask_SORT_3=65535, mask_SORT_372=15, mask_SORT_375=63, mask_SORT_378=255, mask_SORT_48=4095, mask_SORT_86=4294967295, mask_SORT_87=31, mask_SORT_9=7, mask_SORT_90=511, mask_SORT_92=1023, mask_SORT_95=2047, msb_SORT_1=1, msb_SORT_100=4096, msb_SORT_103=8192, msb_SORT_106=16384, msb_SORT_13=2, msb_SORT_139=64, msb_SORT_3=32768, msb_SORT_372=8, msb_SORT_375=32, msb_SORT_378=128, msb_SORT_48=2048, msb_SORT_86=65536, msb_SORT_87=16, msb_SORT_9=4, msb_SORT_90=256, msb_SORT_92=512, msb_SORT_95=1024, state_24=0, state_28=0, state_30=0, state_41=0, state_44=0, state_46=0, state_50=0, state_52=0, state_54=0, state_56=0, state_58=0, state_60=0, state_7=0, var_11=3, var_141=5, var_145=4, var_149=3, var_15=1, var_153=2, var_157=1, var_161=0, var_200=2, var_216=0, var_223=65535, var_23=0, var_37=1, var_43=0, var_49=0, var_6=0, var_62=2, var_66=1, var_71=4, var_73=5, var_88=0] [L160] input_2 = __VERIFIER_nondet_uchar() [L161] input_4 = __VERIFIER_nondet_ushort() [L162] input_5 = __VERIFIER_nondet_ushort() [L163] input_212 = __VERIFIER_nondet_ushort() [L164] input_213 = __VERIFIER_nondet_ushort() [L165] input_214 = __VERIFIER_nondet_ushort() [L166] input_222 = __VERIFIER_nondet_ushort() [L167] input_230 = __VERIFIER_nondet_ushort() [L168] input_231 = __VERIFIER_nondet_ushort() [L169] input_232 = __VERIFIER_nondet_ushort() [L170] input_235 = __VERIFIER_nondet_ushort() [L171] input_253 = __VERIFIER_nondet_ushort() [L172] input_254 = __VERIFIER_nondet_ushort() [L173] input_255 = __VERIFIER_nondet_ushort() [L174] input_258 = __VERIFIER_nondet_ushort() [L175] input_260 = __VERIFIER_nondet_ushort() [L176] input_274 = __VERIFIER_nondet_uchar() [L177] input_275 = __VERIFIER_nondet_uchar() [L178] input_276 = __VERIFIER_nondet_uchar() [L181] SORT_3 var_10_arg_0 = state_7; [L182] SORT_9 var_10 = var_10_arg_0 >> 0; [L183] var_10 = var_10 & mask_SORT_9 [L184] SORT_9 var_12_arg_0 = var_10; [L185] SORT_9 var_12_arg_1 = var_11; [L186] SORT_1 var_12 = var_12_arg_0 == var_12_arg_1; [L187] SORT_3 var_14_arg_0 = state_7; [L188] SORT_13 var_14 = var_14_arg_0 >> 10; [L189] var_14 = var_14 & mask_SORT_13 [L190] SORT_13 var_16_arg_0 = var_14; [L191] SORT_13 var_16_arg_1 = var_15; [L192] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L193] SORT_1 var_17_arg_0 = var_12; [L194] SORT_1 var_17_arg_1 = var_16; [L195] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L196] SORT_3 var_18_arg_0 = state_7; [L197] SORT_13 var_18 = var_18_arg_0 >> 3; [L198] var_18 = var_18 & mask_SORT_13 [L199] SORT_3 var_19_arg_0 = state_7; [L200] SORT_13 var_19 = var_19_arg_0 >> 5; [L201] var_19 = var_19 & mask_SORT_13 [L202] SORT_13 var_20_arg_0 = var_18; [L203] SORT_13 var_20_arg_1 = var_19; [L204] SORT_1 var_20 = var_20_arg_0 == var_20_arg_1; [L205] SORT_1 var_21_arg_0 = var_17; [L206] SORT_1 var_21_arg_1 = var_20; [L207] SORT_1 var_21 = var_21_arg_0 & var_21_arg_1; [L208] SORT_1 var_22_arg_0 = var_21; [L209] SORT_1 var_22 = ~var_22_arg_0; [L210] SORT_9 var_26_arg_0 = state_24; [L211] SORT_1 var_26 = var_26_arg_0 >> 2; [L212] SORT_1 var_27_arg_0 = var_26; [L213] SORT_1 var_27 = ~var_27_arg_0; [L214] SORT_3 var_32_arg_0 = state_28; [L215] SORT_3 var_32_arg_1 = state_30; [L216] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L217] SORT_1 var_33_arg_0 = var_27; [L218] SORT_1 var_33_arg_1 = var_32; [L219] SORT_1 var_33 = var_33_arg_0 | var_33_arg_1; [L220] SORT_1 var_34_arg_0 = var_22; [L221] SORT_1 var_34_arg_1 = var_33; [L222] SORT_1 var_34 = var_34_arg_0 | var_34_arg_1; [L223] SORT_1 var_38_arg_0 = var_34; [L224] SORT_1 var_38 = ~var_38_arg_0; [L225] SORT_1 var_39_arg_0 = var_37; [L226] SORT_1 var_39_arg_1 = var_38; [L227] SORT_1 var_39 = var_39_arg_0 & var_39_arg_1; [L228] var_39 = var_39 & mask_SORT_1 [L229] SORT_1 bad_40_arg_0 = var_39; [L230] CALL __VERIFIER_assert(!(bad_40_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: 0.8s, 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, 0.3s 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 01:50:17,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 9624ba816941bfede66f01542dce3f33a9c079124b33387d166af076651564ba --- 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 01:50:19,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:50:19,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:50:19,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:50:19,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:50:19,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:50:19,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:50:19,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:50:19,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:50:19,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:50:19,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:50:19,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:50:19,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:50:19,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:50:19,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:50:19,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:50:19,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:50:19,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:50:19,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:50:19,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:50:19,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:50:19,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:50:19,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:50:19,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:50:19,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:50:19,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:50:19,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:50:19,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:50:19,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:50:19,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:50:19,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:50:19,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:50:19,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:50:19,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:50:19,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:50:19,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:50:19,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:50:19,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:50:19,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:50:19,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:50:19,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:50:19,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-22 01:50:19,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:50:19,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:50:19,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:50:19,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:50:19,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:50:19,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:50:19,693 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:50:19,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:50:19,694 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:50:19,694 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:50:19,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:50:19,694 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:50:19,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:50:19,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:50:19,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:50:19,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:50:19,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:50:19,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:50:19,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:50:19,699 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:50:19,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:50:19,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:50:19,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:50:19,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:50:19,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:50:19,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:50:19,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:19,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:50:19,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:50:19,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:50:19,702 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:50:19,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:50:19,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:50:19,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:50:19,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:50:19,703 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9624ba816941bfede66f01542dce3f33a9c079124b33387d166af076651564ba [2022-11-22 01:50:20,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:50:20,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:50:20,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:50:20,090 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:50:20,091 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:50:20,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:50:23,261 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:50:23,723 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:50:23,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:50:23,746 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/e8cec1935/d253c2ca2301495d98b2fa1605566d37/FLAG5f84a57e7 [2022-11-22 01:50:23,772 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/data/e8cec1935/d253c2ca2301495d98b2fa1605566d37 [2022-11-22 01:50:23,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:50:23,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:50:23,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:23,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:50:23,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:50:23,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:23" (1/1) ... [2022-11-22 01:50:23,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0a2751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:23, skipping insertion in model container [2022-11-22 01:50:23,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:23" (1/1) ... [2022-11-22 01:50:23,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:50:23,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:50:24,122 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1107,1120] [2022-11-22 01:50:24,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:24,579 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:50:24,597 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_1d38c358-c6d0-4c6d-9288-e0f23d689130/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1107,1120] [2022-11-22 01:50:24,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:24,805 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:50:24,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24 WrapperNode [2022-11-22 01:50:24,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:24,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:24,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:50:24,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:50:24,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:24,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:24,999 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1801 [2022-11-22 01:50:25,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:25,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:50:25,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:50:25,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:50:25,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:50:25,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:50:25,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:50:25,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:50:25,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (1/1) ... [2022-11-22 01:50:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:25,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:25,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:50:25,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:50:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:50:25,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:50:25,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:50:25,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:50:28,511 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:50:28,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:50:28,518 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:50:28,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:28 BoogieIcfgContainer [2022-11-22 01:50:28,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:50:28,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:50:28,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:50:28,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:50:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:50:23" (1/3) ... [2022-11-22 01:50:28,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e92db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:28, skipping insertion in model container [2022-11-22 01:50:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:24" (2/3) ... [2022-11-22 01:50:28,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e92db4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:28, skipping insertion in model container [2022-11-22 01:50:28,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:28" (3/3) ... [2022-11-22 01:50:28,529 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2022-11-22 01:50:28,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:50:28,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:50:28,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:50:28,615 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;@156b72c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:50:28,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:50:28,619 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 01:50:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 01:50:28,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:28,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 01:50:28,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:28,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-22 01:50:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:50:28,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661163604] [2022-11-22 01:50:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:28,654 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 01:50:28,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:50:28,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:28,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:29,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 01:50:29,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:29,252 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 01:50:29,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:50:29,254 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:50:29,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661163604] [2022-11-22 01:50:29,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661163604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:50:29,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:50:29,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:50:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671483957] [2022-11-22 01:50:29,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:50:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:50:29,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:50:29,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:50:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:50:29,297 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 01:50:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:29,809 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-22 01:50:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:50:29,813 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 01:50:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:29,821 INFO L225 Difference]: With dead ends: 20 [2022-11-22 01:50:29,821 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 01:50:29,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:50:29,830 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:29,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:50:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 01:50:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-22 01:50:29,861 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 01:50:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-22 01:50:29,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-22 01:50:29,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:29,865 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-22 01:50:29,866 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 01:50:29,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-22 01:50:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:50:29,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:29,867 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:29,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:30,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:30,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-22 01:50:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:50:30,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250187652] [2022-11-22 01:50:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:30,093 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 01:50:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:50:30,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:30,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:50:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-22 01:50:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:31,369 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 01:50:31,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:31,734 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 01:50:31,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:50:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250187652] [2022-11-22 01:50:31,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250187652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [717857285] [2022-11-22 01:50:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:50:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:50:31,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:50:31,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-22 01:50:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:33,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-22 01:50:33,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:33,596 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 01:50:33,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:33,907 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 01:50:33,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [717857285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214764130] [2022-11-22 01:50:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:33,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:33,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:50:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-22 01:50:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:35,536 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 01:50:35,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:57,810 WARN L233 SmtUtils]: Spent 18.95s on a formula simplification. DAG size of input: 242 DAG size of output: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:00,467 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 01:51:00,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214764130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:00,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:51:00,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 7] total 16 [2022-11-22 01:51:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054030370] [2022-11-22 01:51:00,469 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:00,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:51:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:51:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:51:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=181, Unknown=1, NotChecked=0, Total=240 [2022-11-22 01:51:00,472 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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 01:51:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:02,491 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-22 01:51:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:51:02,492 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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 01:51:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:02,493 INFO L225 Difference]: With dead ends: 19 [2022-11-22 01:51:02,493 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 01:51:02,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=102, Invalid=277, Unknown=1, NotChecked=0, Total=380 [2022-11-22 01:51:02,495 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:02,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:51:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 01:51:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 01:51:02,501 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 01:51:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-22 01:51:02,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-22 01:51:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:02,502 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-22 01:51:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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 01:51:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-22 01:51:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:51:02,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:02,504 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-22 01:51:02,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:02,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:51:03,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:51:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-22 01:51:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:51:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381326519] [2022-11-22 01:51:03,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:51:03,125 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 01:51:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:51:03,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:03,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:04,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:51:04,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:05,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 4606 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-22 01:51:05,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:05,460 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 01:51:05,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:07,269 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 01:51:07,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:51:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381326519] [2022-11-22 01:51:07,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381326519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1868282533] [2022-11-22 01:51:07,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:51:07,271 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:51:07,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:51:07,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:51:07,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-22 01:51:11,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:51:11,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:11,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 4606 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-22 01:51:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:11,797 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 01:51:11,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:13,421 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 01:51:13,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1868282533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:13,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063266911] [2022-11-22 01:51:13,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 01:51:13,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:13,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:13,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:13,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:51:15,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-22 01:51:15,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 4606 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-22 01:51:15,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:15,660 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 01:51:15,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:18,822 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 01:51:18,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063266911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:18,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:51:18,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 25 [2022-11-22 01:51:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037724176] [2022-11-22 01:51:18,823 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-22 01:51:18,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:51:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-22 01:51:18,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:51:18,826 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 01:51:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:26,982 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-22 01:51:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 01:51:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 14 [2022-11-22 01:51:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:26,983 INFO L225 Difference]: With dead ends: 33 [2022-11-22 01:51:26,984 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 01:51:26,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 01:51:26,986 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:26,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 01:51:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 01:51:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-22 01:51:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 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 01:51:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-22 01:51:26,998 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2022-11-22 01:51:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:26,998 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-22 01:51:26,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 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 01:51:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-22 01:51:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:51:27,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:27,000 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-11-22 01:51:27,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:27,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:27,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:27,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:51:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 3 times [2022-11-22 01:51:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:51:27,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735689500] [2022-11-22 01:51:27,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:51:27,619 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 01:51:27,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:51:27,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:27,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d38c358-c6d0-4c6d-9288-e0f23d689130/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 01:51:29,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:51:29,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:30,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 6091 conjuncts, 1117 conjunts are in the unsatisfiable core [2022-11-22 01:51:30,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:01,015 INFO L328 TraceCheckSpWp]: Computing backward predicates...