./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:32:38,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:32:38,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:32:38,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:32:38,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:32:38,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:32:38,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:32:38,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:32:38,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:32:38,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:32:38,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:32:38,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:32:38,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:32:38,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:32:38,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:32:38,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:32:38,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:32:38,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:32:38,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:32:38,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:32:38,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:32:38,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:32:38,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:32:38,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:32:38,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:32:38,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:32:38,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:32:38,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:32:38,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:32:38,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:32:38,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:32:38,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:32:38,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:32:38,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:32:38,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:32:38,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:32:38,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:32:38,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:32:38,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:32:38,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:32:38,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:32:38,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 15:32:38,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:32:38,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:32:38,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:32:38,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:32:38,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:32:38,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:32:38,561 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:32:38,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 15:32:38,562 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 15:32:38,563 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:32:38,563 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 15:32:38,563 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 15:32:38,563 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 15:32:38,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:32:38,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 15:32:38,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:32:38,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:32:38,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:32:38,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:32:38,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:32:38,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:32:38,566 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 15:32:38,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:32:38,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:32:38,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 15:32:38,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 15:32:38,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:32:38,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:32:38,567 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 [2022-12-14 15:32:38,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:32:38,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:32:38,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:32:38,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:32:38,767 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:32:38,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:32:41,396 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:32:41,568 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:32:41,569 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:32:41,579 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/288b39cae/293ee3fc76c74e7794f3429f09be4698/FLAGcd86f3727 [2022-12-14 15:32:41,593 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/288b39cae/293ee3fc76c74e7794f3429f09be4698 [2022-12-14 15:32:41,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:32:41,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:32:41,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:32:41,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:32:41,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:32:41,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:32:41" (1/1) ... [2022-12-14 15:32:41,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1032545a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:41, skipping insertion in model container [2022-12-14 15:32:41,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:32:41" (1/1) ... [2022-12-14 15:32:41,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:32:41,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:32:41,775 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-12-14 15:32:41,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:32:41,941 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:32:41,949 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-12-14 15:32:42,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:32:42,051 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:32:42,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42 WrapperNode [2022-12-14 15:32:42,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:32:42,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:32:42,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:32:42,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:32:42,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,087 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,174 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1487 [2022-12-14 15:32:42,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:32:42,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:32:42,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:32:42,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:32:42,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:32:42,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:32:42,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:32:42,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:32:42,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (1/1) ... [2022-12-14 15:32:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:32:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:32:42,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:32:42,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:32:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:32:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:32:42,543 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:32:42,545 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:34:38,059 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:34:38,084 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:34:38,084 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:34:38,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:34:38 BoogieIcfgContainer [2022-12-14 15:34:38,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:34:38,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:34:38,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:34:38,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:34:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:32:41" (1/3) ... [2022-12-14 15:34:38,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bec3dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:34:38, skipping insertion in model container [2022-12-14 15:34:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:32:42" (2/3) ... [2022-12-14 15:34:38,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bec3dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:34:38, skipping insertion in model container [2022-12-14 15:34:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:34:38" (3/3) ... [2022-12-14 15:34:38,092 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:34:38,106 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:34:38,106 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:34:38,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:34:38,146 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;@20ff45cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:34:38,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:34:38,149 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) [2022-12-14 15:34:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 15:34:38,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:34:38,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 15:34:38,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:34:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:34:38,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 15:34:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 15:34:38,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320114496] [2022-12-14 15:34:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:34:38,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 15:34:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:34:38,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 15:34:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 15:34:38,453 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 15:34:38,455 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 15:34:38,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 15:34:38,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 15:34:38,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 15:34:38,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 15:34:38,478 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 15:34:38,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 03:34:38 BoogieIcfgContainer [2022-12-14 15:34:38,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 15:34:38,485 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 15:34:38,485 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 15:34:38,485 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 15:34:38,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:34:38" (3/4) ... [2022-12-14 15:34:38,488 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 15:34:38,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 15:34:38,489 INFO L158 Benchmark]: Toolchain (without parser) took 116891.82ms. Allocated memory was 136.3MB in the beginning and 897.6MB in the end (delta: 761.3MB). Free memory was 99.2MB in the beginning and 788.4MB in the end (delta: -689.3MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,489 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 136.3MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:34:38,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.17ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 99.2MB in the beginning and 119.4MB in the end (delta: -20.2MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.98ms. Allocated memory is still 163.6MB. Free memory was 119.4MB in the beginning and 101.3MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,490 INFO L158 Benchmark]: Boogie Preprocessor took 65.83ms. Allocated memory is still 163.6MB. Free memory was 101.3MB in the beginning and 92.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,491 INFO L158 Benchmark]: RCFGBuilder took 115844.91ms. Allocated memory was 163.6MB in the beginning and 897.6MB in the end (delta: 734.0MB). Free memory was 92.8MB in the beginning and 835.6MB in the end (delta: -742.8MB). Peak memory consumption was 527.9MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,491 INFO L158 Benchmark]: TraceAbstraction took 397.11ms. Allocated memory is still 897.6MB. Free memory was 835.6MB in the beginning and 788.4MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-12-14 15:34:38,491 INFO L158 Benchmark]: Witness Printer took 2.98ms. Allocated memory is still 897.6MB. Free memory is still 788.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 15:34:38,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 136.3MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.17ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 99.2MB in the beginning and 119.4MB in the end (delta: -20.2MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.98ms. Allocated memory is still 163.6MB. Free memory was 119.4MB in the beginning and 101.3MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.83ms. Allocated memory is still 163.6MB. Free memory was 101.3MB in the beginning and 92.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 115844.91ms. Allocated memory was 163.6MB in the beginning and 897.6MB in the end (delta: 734.0MB). Free memory was 92.8MB in the beginning and 835.6MB in the end (delta: -742.8MB). Peak memory consumption was 527.9MB. Max. memory is 16.1GB. * TraceAbstraction took 397.11ms. Allocated memory is still 897.6MB. Free memory was 835.6MB in the beginning and 788.4MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 2.98ms. Allocated memory is still 897.6MB. Free memory is still 788.4MB. 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 221, overapproximation of bitwiseAnd at line 159. 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_63 = 1; [L40] const SORT_4 var_64 = 0; [L41] const SORT_2 var_74 = 0; [L42] const SORT_3 var_90 = 0; [L43] const SORT_2 var_95 = 2; [L44] const SORT_2 var_101 = 1; [L45] const SORT_4 var_121 = 2; [L46] const SORT_4 var_229 = 3; [L47] const SORT_2 var_251 = 3; [L49] SORT_1 input_73; [L50] SORT_1 input_75; [L51] SORT_1 input_79; [L52] SORT_1 input_80; [L53] SORT_1 input_84; [L54] SORT_1 input_85; [L55] SORT_1 input_89; [L56] SORT_1 input_96; [L57] SORT_1 input_102; [L58] SORT_1 input_132; [L59] SORT_1 input_135; [L60] SORT_1 input_139; [L61] SORT_1 input_146; [L62] SORT_1 input_149; [L63] SORT_1 input_153; [L64] SORT_1 input_160; [L65] SORT_1 input_163; [L66] SORT_1 input_167; [L67] SORT_1 input_177; [L68] SORT_1 input_195; [L69] SORT_1 input_213; [L71] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_2 init_7_arg_1 = var_5; [L101] state_6 = init_7_arg_1 [L102] SORT_2 init_9_arg_1 = var_5; [L103] state_8 = init_9_arg_1 [L104] SORT_2 init_11_arg_1 = var_5; [L105] state_10 = init_11_arg_1 [L106] SORT_2 init_13_arg_1 = var_5; [L107] state_12 = init_13_arg_1 [L108] SORT_2 init_15_arg_1 = var_5; [L109] state_14 = init_15_arg_1 [L110] SORT_2 init_17_arg_1 = var_5; [L111] state_16 = init_17_arg_1 [L112] SORT_2 init_19_arg_1 = var_5; [L113] state_18 = init_19_arg_1 [L114] SORT_2 init_21_arg_1 = var_5; [L115] state_20 = init_21_arg_1 [L116] SORT_2 init_23_arg_1 = var_5; [L117] state_22 = init_23_arg_1 [L118] SORT_2 init_25_arg_1 = var_5; [L119] state_24 = init_25_arg_1 [L120] SORT_2 init_27_arg_1 = var_5; [L121] state_26 = init_27_arg_1 [L122] SORT_2 init_29_arg_1 = var_5; [L123] state_28 = init_29_arg_1 [L124] SORT_1 init_32_arg_1 = var_30; [L125] state_31 = init_32_arg_1 [L126] SORT_1 init_34_arg_1 = var_30; [L127] state_33 = init_34_arg_1 [L128] SORT_1 init_36_arg_1 = var_30; [L129] state_35 = init_36_arg_1 [L130] SORT_1 init_38_arg_1 = var_30; [L131] state_37 = init_38_arg_1 [L132] SORT_1 init_40_arg_1 = var_30; [L133] state_39 = init_40_arg_1 [L134] SORT_1 init_42_arg_1 = var_30; [L135] state_41 = init_42_arg_1 [L136] SORT_1 init_44_arg_1 = var_30; [L137] state_43 = init_44_arg_1 [L138] SORT_1 init_46_arg_1 = var_30; [L139] state_45 = init_46_arg_1 [L140] SORT_1 init_48_arg_1 = var_30; [L141] state_47 = init_48_arg_1 [L142] SORT_1 init_50_arg_1 = var_30; [L143] state_49 = init_50_arg_1 [L144] SORT_1 init_52_arg_1 = var_30; [L145] state_51 = init_52_arg_1 [L146] SORT_1 init_54_arg_1 = var_30; [L147] state_53 = init_54_arg_1 [L148] SORT_1 init_56_arg_1 = var_30; [L149] state_55 = init_56_arg_1 [L150] SORT_1 init_58_arg_1 = var_30; [L151] state_57 = init_58_arg_1 [L152] SORT_1 init_60_arg_1 = var_30; [L153] state_59 = init_60_arg_1 [L154] SORT_1 init_62_arg_1 = var_30; [L155] state_61 = init_62_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_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_8=0, var_101=1, var_121=2, var_229=3, var_251=3, var_30=0, var_5=0, var_63=1, var_64=0, var_74=0, var_90=0, var_95=2] [L158] input_73 = __VERIFIER_nondet_uchar() [L159] input_73 = input_73 & mask_SORT_1 [L160] input_75 = __VERIFIER_nondet_uchar() [L161] input_75 = input_75 & mask_SORT_1 [L162] input_79 = __VERIFIER_nondet_uchar() [L163] input_79 = input_79 & mask_SORT_1 [L164] input_80 = __VERIFIER_nondet_uchar() [L165] input_80 = input_80 & mask_SORT_1 [L166] input_84 = __VERIFIER_nondet_uchar() [L167] input_84 = input_84 & mask_SORT_1 [L168] input_85 = __VERIFIER_nondet_uchar() [L169] input_85 = input_85 & mask_SORT_1 [L170] input_89 = __VERIFIER_nondet_uchar() [L171] input_89 = input_89 & mask_SORT_1 [L172] input_96 = __VERIFIER_nondet_uchar() [L173] input_96 = input_96 & mask_SORT_1 [L174] input_102 = __VERIFIER_nondet_uchar() [L175] input_102 = input_102 & mask_SORT_1 [L176] input_132 = __VERIFIER_nondet_uchar() [L177] input_132 = input_132 & mask_SORT_1 [L178] input_135 = __VERIFIER_nondet_uchar() [L179] input_135 = input_135 & mask_SORT_1 [L180] input_139 = __VERIFIER_nondet_uchar() [L181] input_139 = input_139 & mask_SORT_1 [L182] input_146 = __VERIFIER_nondet_uchar() [L183] input_146 = input_146 & mask_SORT_1 [L184] input_149 = __VERIFIER_nondet_uchar() [L185] input_149 = input_149 & mask_SORT_1 [L186] input_153 = __VERIFIER_nondet_uchar() [L187] input_153 = input_153 & mask_SORT_1 [L188] input_160 = __VERIFIER_nondet_uchar() [L189] input_160 = input_160 & mask_SORT_1 [L190] input_163 = __VERIFIER_nondet_uchar() [L191] input_163 = input_163 & mask_SORT_1 [L192] input_167 = __VERIFIER_nondet_uchar() [L193] input_167 = input_167 & mask_SORT_1 [L194] input_177 = __VERIFIER_nondet_uchar() [L195] input_195 = __VERIFIER_nondet_uchar() [L196] input_213 = __VERIFIER_nondet_uchar() [L199] SORT_1 var_65_arg_0 = state_33; [L200] SORT_4 var_65_arg_1 = var_63; [L201] SORT_4 var_65_arg_2 = var_64; [L202] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L203] SORT_1 var_66_arg_0 = state_43; [L204] SORT_4 var_66_arg_1 = var_63; [L205] SORT_4 var_66_arg_2 = var_64; [L206] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L207] SORT_4 var_67_arg_0 = var_65; [L208] SORT_4 var_67_arg_1 = var_66; [L209] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L210] SORT_1 var_68_arg_0 = state_53; [L211] SORT_4 var_68_arg_1 = var_63; [L212] SORT_4 var_68_arg_2 = var_64; [L213] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L214] SORT_4 var_69_arg_0 = var_67; [L215] SORT_4 var_69_arg_1 = var_68; [L216] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L217] var_69 = var_69 & mask_SORT_4 [L218] SORT_4 var_70_arg_0 = var_69; [L219] SORT_4 var_70_arg_1 = var_63; [L220] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L221] SORT_1 var_71_arg_0 = ~state_61; [L222] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L223] SORT_1 var_71_arg_1 = ~var_70; [L224] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L225] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L226] var_71 = var_71 & mask_SORT_1 [L227] SORT_1 bad_72_arg_0 = var_71; [L228] CALL __VERIFIER_assert(!(bad_72_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: 0.3s, 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, 0.1s 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 [2022-12-14 15:34:38,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 15:34:40,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 15:34:40,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 15:34:40,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 15:34:40,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 15:34:40,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 15:34:40,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 15:34:40,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 15:34:40,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 15:34:40,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 15:34:40,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 15:34:40,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 15:34:40,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 15:34:40,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 15:34:40,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 15:34:40,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 15:34:40,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 15:34:40,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 15:34:40,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 15:34:40,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 15:34:40,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 15:34:40,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 15:34:40,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 15:34:40,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 15:34:40,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 15:34:40,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 15:34:40,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 15:34:40,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 15:34:40,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 15:34:40,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 15:34:40,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 15:34:40,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 15:34:40,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 15:34:40,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 15:34:40,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 15:34:40,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 15:34:40,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 15:34:40,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 15:34:40,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 15:34:40,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 15:34:40,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 15:34:40,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 15:34:40,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 15:34:40,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 15:34:40,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 15:34:40,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 15:34:40,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 15:34:40,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 15:34:40,238 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 15:34:40,238 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 15:34:40,238 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 15:34:40,239 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 15:34:40,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 15:34:40,239 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 15:34:40,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 15:34:40,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 15:34:40,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 15:34:40,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 15:34:40,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:34:40,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 15:34:40,241 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 15:34:40,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 15:34:40,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 15:34:40,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 15:34:40,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 15:34:40,242 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9458c11c88f349e1ca0bb9d4b975cefb238063fab6b2af878cb463f72770ad9 [2022-12-14 15:34:40,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 15:34:40,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 15:34:40,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 15:34:40,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 15:34:40,460 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 15:34:40,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:34:43,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 15:34:43,262 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 15:34:43,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:34:43,271 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/56587e826/c3584755f19946afa70c91d7b59a233d/FLAGd17a0d12a [2022-12-14 15:34:43,282 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/data/56587e826/c3584755f19946afa70c91d7b59a233d [2022-12-14 15:34:43,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 15:34:43,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 15:34:43,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 15:34:43,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 15:34:43,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 15:34:43,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@911039d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43, skipping insertion in model container [2022-12-14 15:34:43,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 15:34:43,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 15:34:43,452 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-12-14 15:34:43,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:34:43,689 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 15:34:43,700 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_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peterson.3.prop1-func-interl.c[1014,1027] [2022-12-14 15:34:43,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 15:34:43,786 INFO L208 MainTranslator]: Completed translation [2022-12-14 15:34:43,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43 WrapperNode [2022-12-14 15:34:43,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 15:34:43,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 15:34:43,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 15:34:43,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 15:34:43,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,860 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1487 [2022-12-14 15:34:43,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 15:34:43,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 15:34:43,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 15:34:43,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 15:34:43,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,911 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 15:34:43,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 15:34:43,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 15:34:43,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 15:34:43,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (1/1) ... [2022-12-14 15:34:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 15:34:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:34:43,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 15:34:43,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 15:34:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 15:34:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 15:34:44,237 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 15:34:44,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 15:34:45,770 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 15:34:45,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 15:34:45,775 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 15:34:45,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:34:45 BoogieIcfgContainer [2022-12-14 15:34:45,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 15:34:45,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 15:34:45,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 15:34:45,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 15:34:45,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:34:43" (1/3) ... [2022-12-14 15:34:45,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f3ec2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:34:45, skipping insertion in model container [2022-12-14 15:34:45,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:34:43" (2/3) ... [2022-12-14 15:34:45,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f3ec2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:34:45, skipping insertion in model container [2022-12-14 15:34:45,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:34:45" (3/3) ... [2022-12-14 15:34:45,788 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peterson.3.prop1-func-interl.c [2022-12-14 15:34:45,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 15:34:45,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 15:34:45,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 15:34:45,843 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;@6e18895d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 15:34:45,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 15:34:45,847 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) [2022-12-14 15:34:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 15:34:45,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:34:45,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 15:34:45,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:34:45,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:34:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 15:34:45,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:34:45,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753911504] [2022-12-14 15:34:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:34:45,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:34:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:34:45,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:34:45,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 15:34:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:34:46,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 15:34:46,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:34:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:34:46,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 15:34:46,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:34:46,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753911504] [2022-12-14 15:34:46,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753911504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 15:34:46,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 15:34:46,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 15:34:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507240788] [2022-12-14 15:34:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 15:34:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 15:34:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:34:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 15:34:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 15:34:46,366 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) [2022-12-14 15:34:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:34:46,526 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 15:34:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 15:34:46,527 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 [2022-12-14 15:34:46,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:34:46,533 INFO L225 Difference]: With dead ends: 20 [2022-12-14 15:34:46,533 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 15:34:46,535 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 [2022-12-14 15:34:46,537 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:34:46,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 15:34:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 15:34:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 15:34:46,558 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) [2022-12-14 15:34:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 15:34:46,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 15:34:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:34:46,559 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 15:34:46,559 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) [2022-12-14 15:34:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 15:34:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 15:34:46,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:34:46,560 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 15:34:46,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 15:34:46,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:34:46,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:34:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:34:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 15:34:46,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:34:46,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588125901] [2022-12-14 15:34:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:34:46,779 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:34:46,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:34:46,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:34:46,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 15:34:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:34:47,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 121 conjunts are in the unsatisfiable core [2022-12-14 15:34:47,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:34:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:34:48,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:35:10,860 WARN L233 SmtUtils]: Spent 20.53s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:35:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:35:11,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:35:11,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588125901] [2022-12-14 15:35:11,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588125901] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:35:11,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1325550956] [2022-12-14 15:35:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:35:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:35:11,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:35:11,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:35:11,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 15:35:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:35:12,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 123 conjunts are in the unsatisfiable core [2022-12-14 15:35:12,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:35:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:35:13,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:35:52,206 WARN L233 SmtUtils]: Spent 36.43s on a formula simplification. DAG size of input: 86 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:36:54,888 WARN L233 SmtUtils]: Spent 55.39s on a formula simplification that was a NOOP. DAG size: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:36:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:36:55,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1325550956] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:36:55,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129993195] [2022-12-14 15:36:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 15:36:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:36:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 15:36:55,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 15:36:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 15:36:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 15:36:56,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 126 conjunts are in the unsatisfiable core [2022-12-14 15:36:56,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:36:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:36:57,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:38:57,896 WARN L233 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 125 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:40:18,057 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 295 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:41:35,540 WARN L233 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 299 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:41:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:41:36,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129993195] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:41:36,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:41:36,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-12-14 15:41:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443382738] [2022-12-14 15:41:36,119 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:41:36,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 15:41:36,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:41:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 15:41:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=164, Unknown=12, NotChecked=0, Total=240 [2022-12-14 15:41:36,120 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:41:38,715 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 15:41:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 15:41:38,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 15:41:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:41:38,716 INFO L225 Difference]: With dead ends: 16 [2022-12-14 15:41:38,716 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 15:41:38,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 400.8s TimeCoverageRelationStatistics Valid=104, Invalid=226, Unknown=12, NotChecked=0, Total=342 [2022-12-14 15:41:38,718 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 15:41:38,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 15:41:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 15:41:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 15:41:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 15:41:38,721 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 15:41:38,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:41:38,721 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 15:41:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:41:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 15:41:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 15:41:38,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:41:38,722 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 15:41:38,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 15:41:38,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 15:41:39,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 15:41:39,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 15:41:39,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:41:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:41:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 15:41:39,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:41:39,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974817063] [2022-12-14 15:41:39,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 15:41:39,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:41:39,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:41:39,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:41:39,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_514f8a4a-ab6b-4381-8c1b-0b1fca6c91a5/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 15:41:39,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 15:41:39,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:41:40,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 243 conjunts are in the unsatisfiable core [2022-12-14 15:41:40,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:42:04,004 WARN L233 SmtUtils]: Spent 22.59s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:42:22,305 WARN L233 SmtUtils]: Spent 12.74s on a formula simplification that was a NOOP. DAG size: 720 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:42:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:42:30,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:42:46,864 WARN L233 SmtUtils]: Spent 14.98s on a formula simplification. DAG size of input: 105 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)