./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9 --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 1376729e58d24f89d32bc04e52c0a39262cea45b1130607582422b8b3a17f5eb --- 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-6b4ec56 [2022-11-20 19:47:02,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:47:02,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:47:02,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:47:02,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:47:02,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:47:02,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:47:02,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:47:02,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:47:02,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:47:02,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:47:02,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:47:02,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:47:02,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:47:02,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:47:02,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:47:02,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:47:02,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:47:02,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:47:02,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:47:02,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:47:02,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:47:02,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:47:02,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:47:02,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:47:02,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:47:02,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:47:02,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:47:02,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:47:02,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:47:02,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:47:02,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:47:02,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:47:02,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:47:02,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:47:02,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:47:02,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:47:02,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:47:02,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:47:02,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:47:02,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:47:02,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 19:47:02,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:47:02,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:47:02,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:47:02,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:47:02,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:47:02,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:47:02,583 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:47:02,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:47:02,583 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:47:02,583 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:47:02,584 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:47:02,584 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:47:02,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:47:02,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:47:02,585 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:47:02,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:47:02,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:47:02,586 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:47:02,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:47:02,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:47:02,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:47:02,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:47:02,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:47:02,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:47:02,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:47:02,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:47:02,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:47:02,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:47:02,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:47:02,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:02,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:47:02,600 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:47:02,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:47:02,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:47:02,600 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:47:02,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:47:02,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:47:02,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:47:02,601 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_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1376729e58d24f89d32bc04e52c0a39262cea45b1130607582422b8b3a17f5eb [2022-11-20 19:47:02,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:47:02,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:47:02,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:47:02,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:47:02,943 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:47:02,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:47:06,015 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:47:06,409 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:47:06,410 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:47:06,426 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/43c728f02/79d2cbb0b6b840b38b31a690744fce44/FLAGa3c750223 [2022-11-20 19:47:06,441 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/43c728f02/79d2cbb0b6b840b38b31a690744fce44 [2022-11-20 19:47:06,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:47:06,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:47:06,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:06,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:47:06,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:47:06,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:06" (1/1) ... [2022-11-20 19:47:06,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744d929e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:06, skipping insertion in model container [2022-11-20 19:47:06,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:47:06" (1/1) ... [2022-11-20 19:47:06,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:47:06,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:47:06,763 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_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c[1014,1027] [2022-11-20 19:47:07,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:07,240 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:47:07,252 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_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c[1014,1027] [2022-11-20 19:47:07,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:47:07,418 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:47:07,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07 WrapperNode [2022-11-20 19:47:07,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:47:07,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:07,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:47:07,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:47:07,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,695 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2296 [2022-11-20 19:47:07,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:47:07,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:47:07,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:47:07,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:47:07,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,907 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:47:07,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:47:07,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:47:07,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:47:07,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (1/1) ... [2022-11-20 19:47:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:47:07,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:47:07,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:47:08,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:47:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:47:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:47:08,559 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:47:08,561 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:58:24,173 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:58:24,226 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:58:24,227 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:58:24,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:24 BoogieIcfgContainer [2022-11-20 19:58:24,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:58:24,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:58:24,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:58:24,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:58:24,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:47:06" (1/3) ... [2022-11-20 19:58:24,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473ae086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:24, skipping insertion in model container [2022-11-20 19:58:24,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:47:07" (2/3) ... [2022-11-20 19:58:24,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473ae086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:24, skipping insertion in model container [2022-11-20 19:58:24,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:24" (3/3) ... [2022-11-20 19:58:24,258 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:58:24,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:58:24,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:58:24,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:58:24,374 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5195d2ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:58:24,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:58:24,380 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) [2022-11-20 19:58:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:58:24,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:24,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:58:24,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:24,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-20 19:58:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262800426] [2022-11-20 19:58:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:58:25,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:58:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:58:25,241 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:58:25,243 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:58:25,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:58:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:58:25,252 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 19:58:25,256 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:58:25,283 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 19:58:25,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:58:25 BoogieIcfgContainer [2022-11-20 19:58:25,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:58:25,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:58:25,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:58:25,298 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:58:25,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:24" (3/4) ... [2022-11-20 19:58:25,302 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 19:58:25,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:58:25,303 INFO L158 Benchmark]: Toolchain (without parser) took 678857.95ms. Allocated memory was 174.1MB in the beginning and 880.8MB in the end (delta: 706.7MB). Free memory was 141.7MB in the beginning and 450.8MB in the end (delta: -309.1MB). Peak memory consumption was 398.6MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,304 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory was 86.5MB in the beginning and 86.4MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:58:25,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 973.11ms. Allocated memory is still 174.1MB. Free memory was 141.7MB in the beginning and 85.4MB in the end (delta: 56.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 276.14ms. Allocated memory is still 174.1MB. Free memory was 85.4MB in the beginning and 55.8MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,305 INFO L158 Benchmark]: Boogie Preprocessor took 255.07ms. Allocated memory is still 174.1MB. Free memory was 55.8MB in the beginning and 112.7MB in the end (delta: -56.9MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,306 INFO L158 Benchmark]: RCFGBuilder took 676280.10ms. Allocated memory was 174.1MB in the beginning and 880.8MB in the end (delta: 706.7MB). Free memory was 112.7MB in the beginning and 513.7MB in the end (delta: -401.0MB). Peak memory consumption was 537.3MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,307 INFO L158 Benchmark]: TraceAbstraction took 1060.11ms. Allocated memory is still 880.8MB. Free memory was 512.7MB in the beginning and 451.9MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,307 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 880.8MB. Free memory was 451.9MB in the beginning and 450.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:58:25,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 115.3MB. Free memory was 86.5MB in the beginning and 86.4MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 973.11ms. Allocated memory is still 174.1MB. Free memory was 141.7MB in the beginning and 85.4MB in the end (delta: 56.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 276.14ms. Allocated memory is still 174.1MB. Free memory was 85.4MB in the beginning and 55.8MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 255.07ms. Allocated memory is still 174.1MB. Free memory was 55.8MB in the beginning and 112.7MB in the end (delta: -56.9MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * RCFGBuilder took 676280.10ms. Allocated memory was 174.1MB in the beginning and 880.8MB in the end (delta: 706.7MB). Free memory was 112.7MB in the beginning and 513.7MB in the end (delta: -401.0MB). Peak memory consumption was 537.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1060.11ms. Allocated memory is still 880.8MB. Free memory was 512.7MB in the beginning and 451.9MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 880.8MB. Free memory was 451.9MB in the beginning and 450.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 262, overapproximation of bitwiseAnd at line 197. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_4 var_73 = 1; [L40] const SORT_4 var_74 = 0; [L41] const SORT_2 var_86 = 2; [L42] const SORT_2 var_88 = 1; [L43] const SORT_2 var_90 = 0; [L44] const SORT_2 var_137 = 255; [L45] const SORT_2 var_144 = 24; [L46] const SORT_2 var_151 = 14; [L47] const SORT_2 var_158 = 6; [L48] const SORT_3 var_315 = 0; [L49] const SORT_4 var_317 = 24; [L50] const SORT_4 var_339 = 14; [L51] const SORT_4 var_361 = 6; [L53] SORT_1 input_85; [L54] SORT_1 input_87; [L55] SORT_1 input_89; [L56] SORT_1 input_91; [L57] SORT_1 input_97; [L58] SORT_1 input_100; [L59] SORT_1 input_101; [L60] SORT_1 input_102; [L61] SORT_1 input_103; [L62] SORT_1 input_109; [L63] SORT_1 input_112; [L64] SORT_1 input_113; [L65] SORT_1 input_114; [L66] SORT_1 input_115; [L67] SORT_1 input_121; [L68] SORT_1 input_124; [L69] SORT_1 input_125; [L70] SORT_1 input_126; [L71] SORT_1 input_127; [L72] SORT_1 input_133; [L73] SORT_1 input_136; [L74] SORT_1 input_143; [L75] SORT_1 input_150; [L76] SORT_1 input_157; [L77] SORT_1 input_164; [L78] SORT_1 input_172; [L79] SORT_1 input_174; [L80] SORT_1 input_186; [L81] SORT_1 input_194; [L82] SORT_1 input_196; [L83] SORT_1 input_208; [L84] SORT_1 input_216; [L85] SORT_1 input_218; [L86] SORT_1 input_230; [L87] SORT_1 input_238; [L88] SORT_1 input_240; [L89] SORT_1 input_252; [L90] SORT_1 input_267; [L91] SORT_1 input_282; [L92] SORT_1 input_297; [L94] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L101] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L102] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L103] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L104] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L105] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L106] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_2 init_7_arg_1 = var_5; [L129] state_6 = init_7_arg_1 [L130] SORT_2 init_9_arg_1 = var_5; [L131] state_8 = init_9_arg_1 [L132] SORT_2 init_11_arg_1 = var_5; [L133] state_10 = init_11_arg_1 [L134] SORT_2 init_13_arg_1 = var_5; [L135] state_12 = init_13_arg_1 [L136] SORT_2 init_15_arg_1 = var_5; [L137] state_14 = init_15_arg_1 [L138] SORT_2 init_17_arg_1 = var_5; [L139] state_16 = init_17_arg_1 [L140] SORT_2 init_19_arg_1 = var_5; [L141] state_18 = init_19_arg_1 [L142] SORT_2 init_21_arg_1 = var_5; [L143] state_20 = init_21_arg_1 [L144] SORT_2 init_23_arg_1 = var_5; [L145] state_22 = init_23_arg_1 [L146] SORT_2 init_25_arg_1 = var_5; [L147] state_24 = init_25_arg_1 [L148] SORT_2 init_27_arg_1 = var_5; [L149] state_26 = init_27_arg_1 [L150] SORT_2 init_29_arg_1 = var_5; [L151] state_28 = init_29_arg_1 [L152] SORT_1 init_32_arg_1 = var_30; [L153] state_31 = init_32_arg_1 [L154] SORT_1 init_34_arg_1 = var_30; [L155] state_33 = init_34_arg_1 [L156] SORT_1 init_36_arg_1 = var_30; [L157] state_35 = init_36_arg_1 [L158] SORT_1 init_38_arg_1 = var_30; [L159] state_37 = init_38_arg_1 [L160] SORT_1 init_40_arg_1 = var_30; [L161] state_39 = init_40_arg_1 [L162] SORT_1 init_42_arg_1 = var_30; [L163] state_41 = init_42_arg_1 [L164] SORT_1 init_44_arg_1 = var_30; [L165] state_43 = init_44_arg_1 [L166] SORT_1 init_46_arg_1 = var_30; [L167] state_45 = init_46_arg_1 [L168] SORT_1 init_48_arg_1 = var_30; [L169] state_47 = init_48_arg_1 [L170] SORT_1 init_50_arg_1 = var_30; [L171] state_49 = init_50_arg_1 [L172] SORT_1 init_52_arg_1 = var_30; [L173] state_51 = init_52_arg_1 [L174] SORT_1 init_54_arg_1 = var_30; [L175] state_53 = init_54_arg_1 [L176] SORT_1 init_56_arg_1 = var_30; [L177] state_55 = init_56_arg_1 [L178] SORT_1 init_58_arg_1 = var_30; [L179] state_57 = init_58_arg_1 [L180] SORT_1 init_60_arg_1 = var_30; [L181] state_59 = init_60_arg_1 [L182] SORT_1 init_62_arg_1 = var_30; [L183] state_61 = init_62_arg_1 [L184] SORT_1 init_64_arg_1 = var_30; [L185] state_63 = init_64_arg_1 [L186] SORT_1 init_66_arg_1 = var_30; [L187] state_65 = init_66_arg_1 [L188] SORT_1 init_68_arg_1 = var_30; [L189] state_67 = init_68_arg_1 [L190] SORT_1 init_70_arg_1 = var_30; [L191] state_69 = init_70_arg_1 [L192] SORT_1 init_72_arg_1 = var_30; [L193] state_71 = init_72_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_8=0, var_137=255, var_144=24, var_151=14, var_158=6, var_30=0, var_315=0, var_317=24, var_339=14, var_361=6, var_5=0, var_73=1, var_74=0, var_86=2, var_88=1, var_90=0] [L196] input_85 = __VERIFIER_nondet_uchar() [L197] input_85 = input_85 & mask_SORT_1 [L198] input_87 = __VERIFIER_nondet_uchar() [L199] input_87 = input_87 & mask_SORT_1 [L200] input_89 = __VERIFIER_nondet_uchar() [L201] input_89 = input_89 & mask_SORT_1 [L202] input_91 = __VERIFIER_nondet_uchar() [L203] input_91 = input_91 & mask_SORT_1 [L204] input_97 = __VERIFIER_nondet_uchar() [L205] input_97 = input_97 & mask_SORT_1 [L206] input_100 = __VERIFIER_nondet_uchar() [L207] input_100 = input_100 & mask_SORT_1 [L208] input_101 = __VERIFIER_nondet_uchar() [L209] input_101 = input_101 & mask_SORT_1 [L210] input_102 = __VERIFIER_nondet_uchar() [L211] input_102 = input_102 & mask_SORT_1 [L212] input_103 = __VERIFIER_nondet_uchar() [L213] input_103 = input_103 & mask_SORT_1 [L214] input_109 = __VERIFIER_nondet_uchar() [L215] input_109 = input_109 & mask_SORT_1 [L216] input_112 = __VERIFIER_nondet_uchar() [L217] input_112 = input_112 & mask_SORT_1 [L218] input_113 = __VERIFIER_nondet_uchar() [L219] input_113 = input_113 & mask_SORT_1 [L220] input_114 = __VERIFIER_nondet_uchar() [L221] input_114 = input_114 & mask_SORT_1 [L222] input_115 = __VERIFIER_nondet_uchar() [L223] input_115 = input_115 & mask_SORT_1 [L224] input_121 = __VERIFIER_nondet_uchar() [L225] input_121 = input_121 & mask_SORT_1 [L226] input_124 = __VERIFIER_nondet_uchar() [L227] input_124 = input_124 & mask_SORT_1 [L228] input_125 = __VERIFIER_nondet_uchar() [L229] input_125 = input_125 & mask_SORT_1 [L230] input_126 = __VERIFIER_nondet_uchar() [L231] input_126 = input_126 & mask_SORT_1 [L232] input_127 = __VERIFIER_nondet_uchar() [L233] input_127 = input_127 & mask_SORT_1 [L234] input_133 = __VERIFIER_nondet_uchar() [L235] input_133 = input_133 & mask_SORT_1 [L236] input_136 = __VERIFIER_nondet_uchar() [L237] input_136 = input_136 & mask_SORT_1 [L238] input_143 = __VERIFIER_nondet_uchar() [L239] input_143 = input_143 & mask_SORT_1 [L240] input_150 = __VERIFIER_nondet_uchar() [L241] input_150 = input_150 & mask_SORT_1 [L242] input_157 = __VERIFIER_nondet_uchar() [L243] input_157 = input_157 & mask_SORT_1 [L244] input_164 = __VERIFIER_nondet_uchar() [L245] input_172 = __VERIFIER_nondet_uchar() [L246] input_174 = __VERIFIER_nondet_uchar() [L247] input_186 = __VERIFIER_nondet_uchar() [L248] input_194 = __VERIFIER_nondet_uchar() [L249] input_196 = __VERIFIER_nondet_uchar() [L250] input_208 = __VERIFIER_nondet_uchar() [L251] input_216 = __VERIFIER_nondet_uchar() [L252] input_218 = __VERIFIER_nondet_uchar() [L253] input_230 = __VERIFIER_nondet_uchar() [L254] input_238 = __VERIFIER_nondet_uchar() [L255] input_240 = __VERIFIER_nondet_uchar() [L256] input_252 = __VERIFIER_nondet_uchar() [L257] input_267 = __VERIFIER_nondet_uchar() [L258] input_282 = __VERIFIER_nondet_uchar() [L259] input_297 = __VERIFIER_nondet_uchar() [L262] SORT_1 var_75_arg_0 = ~state_33; [L263] var_75_arg_0 = var_75_arg_0 & mask_SORT_1 [L264] SORT_4 var_75_arg_1 = var_73; [L265] SORT_4 var_75_arg_2 = var_74; [L266] SORT_4 var_75 = var_75_arg_0 ? var_75_arg_1 : var_75_arg_2; [L267] SORT_1 var_76_arg_0 = state_39; [L268] SORT_4 var_76_arg_1 = var_73; [L269] SORT_4 var_76_arg_2 = var_74; [L270] SORT_4 var_76 = var_76_arg_0 ? var_76_arg_1 : var_76_arg_2; [L271] SORT_4 var_77_arg_0 = var_75; [L272] SORT_4 var_77_arg_1 = var_76; [L273] SORT_4 var_77 = var_77_arg_0 + var_77_arg_1; [L274] SORT_1 var_78_arg_0 = state_45; [L275] SORT_4 var_78_arg_1 = var_73; [L276] SORT_4 var_78_arg_2 = var_74; [L277] SORT_4 var_78 = var_78_arg_0 ? var_78_arg_1 : var_78_arg_2; [L278] SORT_4 var_79_arg_0 = var_77; [L279] SORT_4 var_79_arg_1 = var_78; [L280] SORT_4 var_79 = var_79_arg_0 + var_79_arg_1; [L281] SORT_1 var_80_arg_0 = state_51; [L282] SORT_4 var_80_arg_1 = var_73; [L283] SORT_4 var_80_arg_2 = var_74; [L284] SORT_4 var_80 = var_80_arg_0 ? var_80_arg_1 : var_80_arg_2; [L285] SORT_4 var_81_arg_0 = var_79; [L286] SORT_4 var_81_arg_1 = var_80; [L287] SORT_4 var_81 = var_81_arg_0 + var_81_arg_1; [L288] var_81 = var_81 & mask_SORT_4 [L289] SORT_4 var_82_arg_0 = var_81; [L290] SORT_4 var_82_arg_1 = var_73; [L291] SORT_1 var_82 = var_82_arg_0 <= var_82_arg_1; [L292] SORT_1 var_83_arg_0 = ~state_71; [L293] var_83_arg_0 = var_83_arg_0 & mask_SORT_1 [L294] SORT_1 var_83_arg_1 = ~var_82; [L295] var_83_arg_1 = var_83_arg_1 & mask_SORT_1 [L296] SORT_1 var_83 = var_83_arg_0 & var_83_arg_1; [L297] var_83 = var_83 & mask_SORT_1 [L298] SORT_1 bad_84_arg_0 = var_83; [L299] CALL __VERIFIER_assert(!(bad_84_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: 0.9s, 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, 0.5s 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 [2022-11-20 19:58:25,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9 --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 1376729e58d24f89d32bc04e52c0a39262cea45b1130607582422b8b3a17f5eb --- 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-6b4ec56 [2022-11-20 19:58:27,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:58:27,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:58:27,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:58:27,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:58:27,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:58:27,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:58:27,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:58:27,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:58:27,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:58:27,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:58:27,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:58:27,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:58:27,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:58:27,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:58:27,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:58:27,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:58:27,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:58:28,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:58:28,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:58:28,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:58:28,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:58:28,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:58:28,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:58:28,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:58:28,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:58:28,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:58:28,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:58:28,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:58:28,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:58:28,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:58:28,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:58:28,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:58:28,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:58:28,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:58:28,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:58:28,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:58:28,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:58:28,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:58:28,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:58:28,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:58:28,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 19:58:28,062 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:58:28,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:58:28,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:58:28,065 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:58:28,066 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:58:28,066 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:58:28,066 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:58:28,066 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:58:28,067 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:58:28,067 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:58:28,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:58:28,068 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:58:28,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:58:28,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:58:28,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:58:28,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:58:28,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:58:28,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:58:28,070 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:58:28,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:58:28,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:58:28,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:58:28,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:58:28,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:58:28,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:58:28,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:58:28,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:58:28,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:58:28,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:58:28,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:58:28,073 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:58:28,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:58:28,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:58:28,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:58:28,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:58:28,074 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_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1376729e58d24f89d32bc04e52c0a39262cea45b1130607582422b8b3a17f5eb [2022-11-20 19:58:28,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:58:28,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:58:28,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:58:28,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:58:28,450 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:58:28,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:58:31,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:58:31,953 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:58:31,955 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:58:31,982 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/094522638/6fe1ebaa8b534390b9d4249ac8b13982/FLAG2944b0a75 [2022-11-20 19:58:31,999 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/data/094522638/6fe1ebaa8b534390b9d4249ac8b13982 [2022-11-20 19:58:32,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:58:32,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:58:32,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:58:32,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:58:32,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:58:32,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:31" (1/1) ... [2022-11-20 19:58:32,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b00dd74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32, skipping insertion in model container [2022-11-20 19:58:32,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:31" (1/1) ... [2022-11-20 19:58:32,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:58:32,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:58:32,312 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_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c[1014,1027] [2022-11-20 19:58:32,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:58:32,827 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:58:32,839 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_6be7672e-2174-43cb-af7a-bca46acc326a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lann.3.prop1-func-interl.c[1014,1027] [2022-11-20 19:58:32,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:58:32,992 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:58:32,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32 WrapperNode [2022-11-20 19:58:32,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:58:32,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:58:32,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:58:32,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:58:33,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,181 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2296 [2022-11-20 19:58:33,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:58:33,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:58:33,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:58:33,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:58:33,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:58:33,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:58:33,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:58:33,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:58:33,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (1/1) ... [2022-11-20 19:58:33,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:58:33,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:58:33,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:58:33,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:58:33,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:58:33,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:58:34,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:58:34,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:58:38,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:58:38,709 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:58:38,710 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:58:38,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:38 BoogieIcfgContainer [2022-11-20 19:58:38,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:58:38,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:58:38,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:58:38,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:58:38,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:58:31" (1/3) ... [2022-11-20 19:58:38,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a2b621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:38, skipping insertion in model container [2022-11-20 19:58:38,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:32" (2/3) ... [2022-11-20 19:58:38,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58a2b621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:38, skipping insertion in model container [2022-11-20 19:58:38,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:38" (3/3) ... [2022-11-20 19:58:38,722 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lann.3.prop1-func-interl.c [2022-11-20 19:58:38,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:58:38,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:58:38,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:58:38,800 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;@4658f889, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:58:38,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:58:38,804 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) [2022-11-20 19:58:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 19:58:38,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:38,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 19:58:38,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:38,818 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 19:58:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:58:38,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140938321] [2022-11-20 19:58:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:38,833 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 [2022-11-20 19:58:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:58:38,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:58:38,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:58:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:39,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 19:58:39,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:58:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:58:39,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:58:39,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:58:39,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140938321] [2022-11-20 19:58:39,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140938321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:39,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:39,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:58:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727337658] [2022-11-20 19:58:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:58:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:58:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:58:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:58:39,764 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) [2022-11-20 19:58:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:40,111 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 19:58:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:58:40,114 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 [2022-11-20 19:58:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:40,126 INFO L225 Difference]: With dead ends: 20 [2022-11-20 19:58:40,126 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 19:58:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 19:58:40,133 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:40,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:58:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 19:58:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 19:58:40,166 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) [2022-11-20 19:58:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 19:58:40,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 19:58:40,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:40,169 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 19:58:40,169 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) [2022-11-20 19:58:40,169 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 19:58:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:58:40,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:40,170 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 19:58:40,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:58:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:58:40,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 19:58:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:58:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729105450] [2022-11-20 19:58:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:40,388 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 [2022-11-20 19:58:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:58:40,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 19:58:40,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be7672e-2174-43cb-af7a-bca46acc326a/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 19:58:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:41,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-20 19:58:41,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:58:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:58:45,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:46,922 WARN L233 SmtUtils]: Spent 2.00m on a formula simplification that was a NOOP. DAG size: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)