./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 e89e5e5c49081a46f4bb1120b29875f7db71286809210e10b7d8629fd6832294 --- 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 13:15:12,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:15:12,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:15:12,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:15:12,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:15:12,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:15:12,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:15:12,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:15:12,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:15:12,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:15:12,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:15:12,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:15:12,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:15:12,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:15:12,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:15:12,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:15:12,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:15:12,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:15:12,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:15:12,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:15:12,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:15:12,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:15:12,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:15:12,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:15:12,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:15:12,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:15:12,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:15:12,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:15:12,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:15:12,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:15:12,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:15:12,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:15:12,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:15:12,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:15:12,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:15:12,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:15:12,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:15:12,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:15:12,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:15:12,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:15:12,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:15:12,457 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 13:15:12,479 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:15:12,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:15:12,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:15:12,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:15:12,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:15:12,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:15:12,481 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:15:12,481 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:15:12,481 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:15:12,481 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:15:12,481 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:15:12,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:15:12,482 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:15:12,482 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:15:12,482 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:15:12,482 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:15:12,482 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:15:12,483 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:15:12,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:15:12,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:15:12,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:15:12,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:15:12,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:15:12,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:15:12,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:15:12,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:15:12,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:15:12,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:15:12,487 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89e5e5c49081a46f4bb1120b29875f7db71286809210e10b7d8629fd6832294 [2022-12-14 13:15:12,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:15:12,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:15:12,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:15:12,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:15:12,686 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:15:12,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2022-12-14 13:15:15,130 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:15:15,384 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:15:15,384 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2022-12-14 13:15:15,398 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/afe939e26/4e952b6fd21f4c6c9e8b319a75d476a6/FLAGfad6a0488 [2022-12-14 13:15:15,728 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/afe939e26/4e952b6fd21f4c6c9e8b319a75d476a6 [2022-12-14 13:15:15,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:15:15,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:15:15,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:15:15,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:15:15,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:15:15,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:15:15" (1/1) ... [2022-12-14 13:15:15,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250c87e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:15, skipping insertion in model container [2022-12-14 13:15:15,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:15:15" (1/1) ... [2022-12-14 13:15:15,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:15:15,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:15:15,941 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c[1107,1120] [2022-12-14 13:15:16,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:15:16,175 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:15:16,183 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c[1107,1120] [2022-12-14 13:15:16,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:15:16,314 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:15:16,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16 WrapperNode [2022-12-14 13:15:16,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:15:16,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:15:16,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:15:16,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:15:16,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,440 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2328 [2022-12-14 13:15:16,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:15:16,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:15:16,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:15:16,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:15:16,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,515 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:15:16,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:15:16,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:15:16,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:15:16,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (1/1) ... [2022-12-14 13:15:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:15:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:15:16,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:15:16,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:15:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:15:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:15:16,901 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:15:16,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:16:10,807 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:16:10,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:16:10,838 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:16:10,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:10 BoogieIcfgContainer [2022-12-14 13:16:10,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:16:10,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:16:10,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:16:10,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:16:10,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:15:15" (1/3) ... [2022-12-14 13:16:10,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773feae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:10, skipping insertion in model container [2022-12-14 13:16:10,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:15:16" (2/3) ... [2022-12-14 13:16:10,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773feae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:10, skipping insertion in model container [2022-12-14 13:16:10,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:10" (3/3) ... [2022-12-14 13:16:10,847 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.usb_phy.c [2022-12-14 13:16:10,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:16:10,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:16:10,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:16:10,908 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;@3a363fac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:16:10,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:16:10,912 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 13:16:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:16:10,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:10,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:16:10,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 13:16:10,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:16:10,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883611847] [2022-12-14 13:16:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:10,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:16:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:11,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:16:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:16:11,201 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:16:11,202 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:16:11,203 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:16:11,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:16:11,208 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 13:16:11,211 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:16:11,233 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 13:16:11,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:16:11 BoogieIcfgContainer [2022-12-14 13:16:11,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:16:11,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:16:11,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:16:11,247 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:16:11,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:10" (3/4) ... [2022-12-14 13:16:11,250 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:16:11,250 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:16:11,251 INFO L158 Benchmark]: Toolchain (without parser) took 55514.44ms. Allocated memory was 115.3MB in the beginning and 841.0MB in the end (delta: 725.6MB). Free memory was 77.6MB in the beginning and 694.5MB in the end (delta: -616.9MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,252 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 115.3MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:16:11,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.09ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 77.3MB in the beginning and 78.3MB in the end (delta: -996.0kB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.59ms. Allocated memory is still 138.4MB. Free memory was 78.3MB in the beginning and 59.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,253 INFO L158 Benchmark]: Boogie Preprocessor took 92.61ms. Allocated memory is still 138.4MB. Free memory was 59.5MB in the beginning and 83.8MB in the end (delta: -24.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,253 INFO L158 Benchmark]: RCFGBuilder took 54306.59ms. Allocated memory was 138.4MB in the beginning and 841.0MB in the end (delta: 702.5MB). Free memory was 83.8MB in the beginning and 748.0MB in the end (delta: -664.2MB). Peak memory consumption was 509.8MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,254 INFO L158 Benchmark]: TraceAbstraction took 404.63ms. Allocated memory is still 841.0MB. Free memory was 747.0MB in the beginning and 694.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2022-12-14 13:16:11,254 INFO L158 Benchmark]: Witness Printer took 3.36ms. Allocated memory is still 841.0MB. Free memory is still 694.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:16:11,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 115.3MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.09ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 77.3MB in the beginning and 78.3MB in the end (delta: -996.0kB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 124.59ms. Allocated memory is still 138.4MB. Free memory was 78.3MB in the beginning and 59.5MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.61ms. Allocated memory is still 138.4MB. Free memory was 59.5MB in the beginning and 83.8MB in the end (delta: -24.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * RCFGBuilder took 54306.59ms. Allocated memory was 138.4MB in the beginning and 841.0MB in the end (delta: 702.5MB). Free memory was 83.8MB in the beginning and 748.0MB in the end (delta: -664.2MB). Peak memory consumption was 509.8MB. Max. memory is 16.1GB. * TraceAbstraction took 404.63ms. Allocated memory is still 841.0MB. Free memory was 747.0MB in the beginning and 694.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Witness Printer took 3.36ms. Allocated memory is still 841.0MB. Free memory is still 694.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 498, overapproximation of bitwiseOr at line 507, overapproximation of bitwiseAnd at line 357. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 8); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (8 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 32); [L32] const SORT_14 msb_SORT_14 = (SORT_14)1 << (32 - 1); [L34] const SORT_30 mask_SORT_30 = (SORT_30)-1 >> (sizeof(SORT_30) * 8 - 3); [L35] const SORT_30 msb_SORT_30 = (SORT_30)1 << (3 - 1); [L37] const SORT_46 mask_SORT_46 = (SORT_46)-1 >> (sizeof(SORT_46) * 8 - 2); [L38] const SORT_46 msb_SORT_46 = (SORT_46)1 << (2 - 1); [L40] const SORT_175 mask_SORT_175 = (SORT_175)-1 >> (sizeof(SORT_175) * 8 - 5); [L41] const SORT_175 msb_SORT_175 = (SORT_175)1 << (5 - 1); [L43] const SORT_3 var_11 = 0; [L44] const SORT_14 var_16 = 1; [L45] const SORT_3 var_26 = 1; [L46] const SORT_30 var_31 = 0; [L47] const SORT_46 var_47 = 1; [L48] const SORT_30 var_52 = 6; [L49] const SORT_1 var_130 = 0; [L50] const SORT_175 var_176 = 0; [L51] const SORT_30 var_196 = 1; [L52] const SORT_46 var_217 = 0; [L53] const SORT_46 var_226 = 2; [L54] const SORT_46 var_227 = 3; [L55] const SORT_30 var_307 = 2; [L56] const SORT_30 var_319 = 3; [L57] const SORT_30 var_329 = 4; [L58] const SORT_30 var_344 = 5; [L59] const SORT_30 var_356 = 7; [L60] const SORT_175 var_404 = 31; [L61] const SORT_1 var_569 = 128; [L62] const SORT_175 var_753 = 1; [L64] SORT_1 input_2; [L65] SORT_3 input_4; [L66] SORT_3 input_5; [L67] SORT_3 input_6; [L68] SORT_3 input_7; [L69] SORT_3 input_8; [L70] SORT_3 input_9; [L71] SORT_3 input_10; [L72] SORT_1 input_67; [L73] SORT_3 input_112; [L74] SORT_3 input_141; [L75] SORT_3 input_143; [L76] SORT_3 input_160; [L77] SORT_3 input_162; [L78] SORT_3 input_164; [L79] SORT_3 input_166; [L80] SORT_3 input_185; [L81] SORT_3 input_188; [L82] SORT_3 input_192; [L83] SORT_30 input_201; [L84] SORT_30 input_204; [L85] SORT_30 input_208; [L86] SORT_46 input_216; [L87] SORT_46 input_222; [L88] SORT_46 input_225; [L89] SORT_46 input_232; [L90] SORT_46 input_236; [L91] SORT_46 input_241; [L92] SORT_46 input_243; [L93] SORT_46 input_246; [L94] SORT_46 input_253; [L95] SORT_30 input_257; [L96] SORT_30 input_263; [L97] SORT_30 input_266; [L98] SORT_30 input_270; [L99] SORT_30 input_272; [L100] SORT_30 input_275; [L101] SORT_3 input_287; [L102] SORT_30 input_294; [L103] SORT_30 input_295; [L104] SORT_30 input_296; [L105] SORT_30 input_302; [L106] SORT_30 input_305; [L107] SORT_30 input_306; [L108] SORT_30 input_313; [L109] SORT_30 input_317; [L110] SORT_30 input_318; [L111] SORT_30 input_325; [L112] SORT_30 input_327; [L113] SORT_30 input_328; [L114] SORT_30 input_335; [L115] SORT_30 input_342; [L116] SORT_30 input_343; [L117] SORT_30 input_350; [L118] SORT_30 input_352; [L119] SORT_30 input_353; [L120] SORT_30 input_354; [L121] SORT_30 input_355; [L122] SORT_30 input_359; [L123] SORT_30 input_365; [L124] SORT_30 input_371; [L125] SORT_30 input_375; [L126] SORT_30 input_376; [L127] SORT_30 input_382; [L128] SORT_30 input_395; [L129] SORT_30 input_398; [L130] SORT_3 input_412; [L131] SORT_3 input_418; [L132] SORT_3 input_422; [L133] SORT_3 input_427; [L134] SORT_3 input_440; [L135] SORT_3 input_450; [L136] SORT_3 input_460; [L137] SORT_3 input_461; [L138] SORT_3 input_466; [L139] SORT_3 input_479; [L140] SORT_3 input_482; [L141] SORT_3 input_487; [L142] SORT_3 input_489; [L143] SORT_3 input_493; [L144] SORT_3 input_498; [L145] SORT_3 input_504; [L146] SORT_3 input_510; [L147] SORT_30 input_519; [L148] SORT_30 input_522; [L149] SORT_30 input_526; [L150] SORT_3 input_532; [L151] SORT_3 input_536; [L152] SORT_3 input_540; [L153] SORT_30 input_544; [L154] SORT_30 input_550; [L155] SORT_30 input_553; [L156] SORT_30 input_557; [L157] SORT_30 input_559; [L158] SORT_30 input_562; [L159] SORT_1 input_567; [L160] SORT_3 input_573; [L161] SORT_3 input_577; [L162] SORT_3 input_582; [L163] SORT_3 input_587; [L164] SORT_3 input_591; [L165] SORT_3 input_595; [L166] SORT_3 input_601; [L167] SORT_3 input_605; [L168] SORT_3 input_609; [L169] SORT_3 input_613; [L170] SORT_3 input_617; [L171] SORT_3 input_648; [L172] SORT_30 input_658; [L173] SORT_30 input_662; [L174] SORT_30 input_666; [L175] SORT_30 input_670; [L176] SORT_30 input_672; [L177] SORT_30 input_676; [L178] SORT_30 input_683; [L179] SORT_30 input_687; [L180] SORT_30 input_689; [L181] SORT_30 input_695; [L182] SORT_30 input_699; [L183] SORT_30 input_703; [L184] SORT_30 input_712; [L185] SORT_3 input_717; [L186] SORT_3 input_719; [L187] SORT_3 input_723; [L188] SORT_3 input_728; [L189] SORT_3 input_736; [L190] SORT_3 input_742; [L191] SORT_3 input_748; [L192] SORT_175 input_758; [L193] SORT_175 input_762; [L194] SORT_175 input_766; [L196] SORT_3 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L197] SORT_3 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L198] SORT_30 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L199] SORT_3 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L200] SORT_3 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L201] SORT_3 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L202] SORT_3 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L203] SORT_46 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_46; [L204] SORT_30 state_50 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L205] SORT_3 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L206] SORT_3 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L207] SORT_3 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L208] SORT_3 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L209] SORT_3 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L210] SORT_30 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L211] SORT_3 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L212] SORT_3 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L213] SORT_3 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L214] SORT_3 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L215] SORT_3 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L216] SORT_3 state_88 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L217] SORT_3 state_90 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L218] SORT_3 state_92 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L219] SORT_3 state_94 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L220] SORT_3 state_96 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L221] SORT_3 state_98 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L222] SORT_3 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L223] SORT_3 state_102 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L224] SORT_3 state_108 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L225] SORT_3 state_110 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L226] SORT_3 state_114 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L227] SORT_3 state_116 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L228] SORT_3 state_118 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L229] SORT_3 state_120 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L230] SORT_30 state_122 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L231] SORT_3 state_124 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L232] SORT_30 state_126 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L233] SORT_1 state_131 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L234] SORT_3 state_133 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L235] SORT_3 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L236] SORT_3 state_137 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L237] SORT_3 state_139 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L238] SORT_3 state_145 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L239] SORT_3 state_147 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L240] SORT_3 state_149 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L241] SORT_30 state_154 = __VERIFIER_nondet_uchar() & mask_SORT_30; [L242] SORT_3 state_156 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L243] SORT_3 state_158 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L244] SORT_3 state_168 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L245] SORT_3 state_170 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L246] SORT_3 state_172 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L247] SORT_175 state_177 = __VERIFIER_nondet_uchar() & mask_SORT_175; [L249] SORT_3 init_13_arg_1 = var_11; [L250] state_12 = init_13_arg_1 [L251] SORT_3 init_20_arg_1 = var_11; [L252] state_19 = init_20_arg_1 [L253] SORT_30 init_33_arg_1 = var_31; [L254] state_32 = init_33_arg_1 [L255] SORT_3 init_35_arg_1 = var_11; [L256] state_34 = init_35_arg_1 [L257] SORT_3 init_37_arg_1 = var_11; [L258] state_36 = init_37_arg_1 [L259] SORT_3 init_40_arg_1 = var_11; [L260] state_39 = init_40_arg_1 [L261] SORT_3 init_42_arg_1 = var_11; [L262] state_41 = init_42_arg_1 [L263] SORT_46 init_49_arg_1 = var_47; [L264] state_48 = init_49_arg_1 [L265] SORT_30 init_51_arg_1 = var_31; [L266] state_50 = init_51_arg_1 [L267] SORT_3 init_56_arg_1 = var_11; [L268] state_55 = init_56_arg_1 [L269] SORT_3 init_58_arg_1 = var_11; [L270] state_57 = init_58_arg_1 [L271] SORT_3 init_60_arg_1 = var_11; [L272] state_59 = init_60_arg_1 [L273] SORT_3 init_62_arg_1 = var_11; [L274] state_61 = init_62_arg_1 [L275] SORT_3 init_64_arg_1 = var_11; [L276] state_63 = init_64_arg_1 [L277] SORT_30 init_66_arg_1 = var_31; [L278] state_65 = init_66_arg_1 [L279] SORT_3 init_70_arg_1 = var_11; [L280] state_69 = init_70_arg_1 [L281] SORT_3 init_72_arg_1 = var_11; [L282] state_71 = init_72_arg_1 [L283] SORT_3 init_80_arg_1 = var_11; [L284] state_79 = init_80_arg_1 [L285] SORT_3 init_85_arg_1 = var_11; [L286] state_84 = init_85_arg_1 [L287] SORT_3 init_87_arg_1 = var_11; [L288] state_86 = init_87_arg_1 [L289] SORT_3 init_89_arg_1 = var_11; [L290] state_88 = init_89_arg_1 [L291] SORT_3 init_91_arg_1 = var_11; [L292] state_90 = init_91_arg_1 [L293] SORT_3 init_93_arg_1 = var_11; [L294] state_92 = init_93_arg_1 [L295] SORT_3 init_95_arg_1 = var_11; [L296] state_94 = init_95_arg_1 [L297] SORT_3 init_97_arg_1 = var_11; [L298] state_96 = init_97_arg_1 [L299] SORT_3 init_99_arg_1 = var_11; [L300] state_98 = init_99_arg_1 [L301] SORT_3 init_101_arg_1 = var_11; [L302] state_100 = init_101_arg_1 [L303] SORT_3 init_103_arg_1 = var_11; [L304] state_102 = init_103_arg_1 [L305] SORT_3 init_109_arg_1 = var_11; [L306] state_108 = init_109_arg_1 [L307] SORT_3 init_111_arg_1 = var_11; [L308] state_110 = init_111_arg_1 [L309] SORT_3 init_115_arg_1 = var_11; [L310] state_114 = init_115_arg_1 [L311] SORT_3 init_117_arg_1 = var_11; [L312] state_116 = init_117_arg_1 [L313] SORT_3 init_119_arg_1 = var_11; [L314] state_118 = init_119_arg_1 [L315] SORT_3 init_121_arg_1 = var_11; [L316] state_120 = init_121_arg_1 [L317] SORT_30 init_123_arg_1 = var_31; [L318] state_122 = init_123_arg_1 [L319] SORT_3 init_125_arg_1 = var_11; [L320] state_124 = init_125_arg_1 [L321] SORT_30 init_127_arg_1 = var_31; [L322] state_126 = init_127_arg_1 [L323] SORT_1 init_132_arg_1 = var_130; [L324] state_131 = init_132_arg_1 [L325] SORT_3 init_134_arg_1 = var_11; [L326] state_133 = init_134_arg_1 [L327] SORT_3 init_136_arg_1 = var_11; [L328] state_135 = init_136_arg_1 [L329] SORT_3 init_138_arg_1 = var_11; [L330] state_137 = init_138_arg_1 [L331] SORT_3 init_140_arg_1 = var_11; [L332] state_139 = init_140_arg_1 [L333] SORT_3 init_146_arg_1 = var_11; [L334] state_145 = init_146_arg_1 [L335] SORT_3 init_148_arg_1 = var_11; [L336] state_147 = init_148_arg_1 [L337] SORT_3 init_150_arg_1 = var_11; [L338] state_149 = init_150_arg_1 [L339] SORT_30 init_155_arg_1 = var_31; [L340] state_154 = init_155_arg_1 [L341] SORT_3 init_157_arg_1 = var_11; [L342] state_156 = init_157_arg_1 [L343] SORT_3 init_159_arg_1 = var_11; [L344] state_158 = init_159_arg_1 [L345] SORT_3 init_169_arg_1 = var_26; [L346] state_168 = init_169_arg_1 [L347] SORT_3 init_171_arg_1 = var_11; [L348] state_170 = init_171_arg_1 [L349] SORT_3 init_173_arg_1 = var_11; [L350] state_172 = init_173_arg_1 [L351] SORT_175 init_178_arg_1 = var_176; [L352] state_177 = init_178_arg_1 VAL [init_101_arg_1=0, init_103_arg_1=0, init_109_arg_1=0, init_111_arg_1=0, init_115_arg_1=0, init_117_arg_1=0, init_119_arg_1=0, init_121_arg_1=0, init_123_arg_1=0, init_125_arg_1=0, init_127_arg_1=0, init_132_arg_1=0, init_134_arg_1=0, init_136_arg_1=0, init_138_arg_1=0, init_13_arg_1=0, init_140_arg_1=0, init_146_arg_1=0, init_148_arg_1=0, init_150_arg_1=0, init_155_arg_1=0, init_157_arg_1=0, init_159_arg_1=0, init_169_arg_1=1, init_171_arg_1=0, init_173_arg_1=0, init_178_arg_1=0, init_20_arg_1=0, init_33_arg_1=0, init_35_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_49_arg_1=1, init_51_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_80_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_89_arg_1=0, init_91_arg_1=0, init_93_arg_1=0, init_95_arg_1=0, init_97_arg_1=0, init_99_arg_1=0, mask_SORT_1=255, mask_SORT_14=4294967295, mask_SORT_175=31, mask_SORT_3=1, mask_SORT_30=7, mask_SORT_46=3, msb_SORT_1=128, msb_SORT_14=2147483648, msb_SORT_175=16, msb_SORT_3=1, msb_SORT_30=4, msb_SORT_46=2, state_100=0, state_102=0, state_108=0, state_110=0, state_114=0, state_116=0, state_118=0, state_12=0, state_120=0, state_122=0, state_124=0, state_126=0, state_131=0, state_133=0, state_135=0, state_137=0, state_139=0, state_145=0, state_147=0, state_149=0, state_154=0, state_156=0, state_158=0, state_168=1, state_170=0, state_172=0, state_177=0, state_19=0, state_32=0, state_34=0, state_36=0, state_39=0, state_41=0, state_48=1, state_50=0, state_55=0, state_57=0, state_59=0, state_61=0, state_63=0, state_65=0, state_69=0, state_71=0, state_79=0, state_84=0, state_86=0, state_88=0, state_90=0, state_92=0, state_94=0, state_96=0, state_98=0, var_11=0, var_130=0, var_16=1, var_176=0, var_196=1, var_217=0, var_226=2, var_227=3, var_26=1, var_307=2, var_31=0, var_319=3, var_329=4, var_344=5, var_356=7, var_404=31, var_47=1, var_52=6, var_569=128, var_753=1] [L355] input_2 = __VERIFIER_nondet_uchar() [L356] input_4 = __VERIFIER_nondet_uchar() [L357] input_4 = input_4 & mask_SORT_3 [L358] input_5 = __VERIFIER_nondet_uchar() [L359] input_6 = __VERIFIER_nondet_uchar() [L360] input_7 = __VERIFIER_nondet_uchar() [L361] input_8 = __VERIFIER_nondet_uchar() [L362] input_9 = __VERIFIER_nondet_uchar() [L363] input_9 = input_9 & mask_SORT_3 [L364] input_10 = __VERIFIER_nondet_uchar() [L365] input_10 = input_10 & mask_SORT_3 [L366] input_67 = __VERIFIER_nondet_uchar() [L367] input_112 = __VERIFIER_nondet_uchar() [L368] input_141 = __VERIFIER_nondet_uchar() [L369] input_143 = __VERIFIER_nondet_uchar() [L370] input_160 = __VERIFIER_nondet_uchar() [L371] input_162 = __VERIFIER_nondet_uchar() [L372] input_164 = __VERIFIER_nondet_uchar() [L373] input_166 = __VERIFIER_nondet_uchar() [L374] input_185 = __VERIFIER_nondet_uchar() [L375] input_188 = __VERIFIER_nondet_uchar() [L376] input_192 = __VERIFIER_nondet_uchar() [L377] input_201 = __VERIFIER_nondet_uchar() [L378] input_204 = __VERIFIER_nondet_uchar() [L379] input_208 = __VERIFIER_nondet_uchar() [L380] input_216 = __VERIFIER_nondet_uchar() [L381] input_222 = __VERIFIER_nondet_uchar() [L382] input_225 = __VERIFIER_nondet_uchar() [L383] input_232 = __VERIFIER_nondet_uchar() [L384] input_236 = __VERIFIER_nondet_uchar() [L385] input_241 = __VERIFIER_nondet_uchar() [L386] input_243 = __VERIFIER_nondet_uchar() [L387] input_246 = __VERIFIER_nondet_uchar() [L388] input_253 = __VERIFIER_nondet_uchar() [L389] input_257 = __VERIFIER_nondet_uchar() [L390] input_263 = __VERIFIER_nondet_uchar() [L391] input_266 = __VERIFIER_nondet_uchar() [L392] input_270 = __VERIFIER_nondet_uchar() [L393] input_272 = __VERIFIER_nondet_uchar() [L394] input_275 = __VERIFIER_nondet_uchar() [L395] input_287 = __VERIFIER_nondet_uchar() [L396] input_294 = __VERIFIER_nondet_uchar() [L397] input_295 = __VERIFIER_nondet_uchar() [L398] input_296 = __VERIFIER_nondet_uchar() [L399] input_302 = __VERIFIER_nondet_uchar() [L400] input_305 = __VERIFIER_nondet_uchar() [L401] input_306 = __VERIFIER_nondet_uchar() [L402] input_313 = __VERIFIER_nondet_uchar() [L403] input_317 = __VERIFIER_nondet_uchar() [L404] input_318 = __VERIFIER_nondet_uchar() [L405] input_325 = __VERIFIER_nondet_uchar() [L406] input_327 = __VERIFIER_nondet_uchar() [L407] input_328 = __VERIFIER_nondet_uchar() [L408] input_335 = __VERIFIER_nondet_uchar() [L409] input_342 = __VERIFIER_nondet_uchar() [L410] input_343 = __VERIFIER_nondet_uchar() [L411] input_350 = __VERIFIER_nondet_uchar() [L412] input_352 = __VERIFIER_nondet_uchar() [L413] input_353 = __VERIFIER_nondet_uchar() [L414] input_354 = __VERIFIER_nondet_uchar() [L415] input_355 = __VERIFIER_nondet_uchar() [L416] input_359 = __VERIFIER_nondet_uchar() [L417] input_365 = __VERIFIER_nondet_uchar() [L418] input_371 = __VERIFIER_nondet_uchar() [L419] input_375 = __VERIFIER_nondet_uchar() [L420] input_376 = __VERIFIER_nondet_uchar() [L421] input_382 = __VERIFIER_nondet_uchar() [L422] input_395 = __VERIFIER_nondet_uchar() [L423] input_398 = __VERIFIER_nondet_uchar() [L424] input_412 = __VERIFIER_nondet_uchar() [L425] input_418 = __VERIFIER_nondet_uchar() [L426] input_422 = __VERIFIER_nondet_uchar() [L427] input_427 = __VERIFIER_nondet_uchar() [L428] input_440 = __VERIFIER_nondet_uchar() [L429] input_450 = __VERIFIER_nondet_uchar() [L430] input_460 = __VERIFIER_nondet_uchar() [L431] input_461 = __VERIFIER_nondet_uchar() [L432] input_466 = __VERIFIER_nondet_uchar() [L433] input_479 = __VERIFIER_nondet_uchar() [L434] input_482 = __VERIFIER_nondet_uchar() [L435] input_487 = __VERIFIER_nondet_uchar() [L436] input_489 = __VERIFIER_nondet_uchar() [L437] input_493 = __VERIFIER_nondet_uchar() [L438] input_498 = __VERIFIER_nondet_uchar() [L439] input_504 = __VERIFIER_nondet_uchar() [L440] input_510 = __VERIFIER_nondet_uchar() [L441] input_519 = __VERIFIER_nondet_uchar() [L442] input_522 = __VERIFIER_nondet_uchar() [L443] input_526 = __VERIFIER_nondet_uchar() [L444] input_532 = __VERIFIER_nondet_uchar() [L445] input_536 = __VERIFIER_nondet_uchar() [L446] input_540 = __VERIFIER_nondet_uchar() [L447] input_544 = __VERIFIER_nondet_uchar() [L448] input_550 = __VERIFIER_nondet_uchar() [L449] input_553 = __VERIFIER_nondet_uchar() [L450] input_557 = __VERIFIER_nondet_uchar() [L451] input_559 = __VERIFIER_nondet_uchar() [L452] input_562 = __VERIFIER_nondet_uchar() [L453] input_567 = __VERIFIER_nondet_uchar() [L454] input_573 = __VERIFIER_nondet_uchar() [L455] input_577 = __VERIFIER_nondet_uchar() [L456] input_582 = __VERIFIER_nondet_uchar() [L457] input_587 = __VERIFIER_nondet_uchar() [L458] input_591 = __VERIFIER_nondet_uchar() [L459] input_595 = __VERIFIER_nondet_uchar() [L460] input_601 = __VERIFIER_nondet_uchar() [L461] input_605 = __VERIFIER_nondet_uchar() [L462] input_609 = __VERIFIER_nondet_uchar() [L463] input_613 = __VERIFIER_nondet_uchar() [L464] input_617 = __VERIFIER_nondet_uchar() [L465] input_648 = __VERIFIER_nondet_uchar() [L466] input_658 = __VERIFIER_nondet_uchar() [L467] input_662 = __VERIFIER_nondet_uchar() [L468] input_666 = __VERIFIER_nondet_uchar() [L469] input_670 = __VERIFIER_nondet_uchar() [L470] input_672 = __VERIFIER_nondet_uchar() [L471] input_676 = __VERIFIER_nondet_uchar() [L472] input_683 = __VERIFIER_nondet_uchar() [L473] input_687 = __VERIFIER_nondet_uchar() [L474] input_689 = __VERIFIER_nondet_uchar() [L475] input_695 = __VERIFIER_nondet_uchar() [L476] input_699 = __VERIFIER_nondet_uchar() [L477] input_703 = __VERIFIER_nondet_uchar() [L478] input_712 = __VERIFIER_nondet_uchar() [L479] input_717 = __VERIFIER_nondet_uchar() [L480] input_719 = __VERIFIER_nondet_uchar() [L481] input_723 = __VERIFIER_nondet_uchar() [L482] input_728 = __VERIFIER_nondet_uchar() [L483] input_736 = __VERIFIER_nondet_uchar() [L484] input_742 = __VERIFIER_nondet_uchar() [L485] input_748 = __VERIFIER_nondet_uchar() [L486] input_758 = __VERIFIER_nondet_uchar() [L487] input_762 = __VERIFIER_nondet_uchar() [L488] input_766 = __VERIFIER_nondet_uchar() [L491] SORT_3 var_15_arg_0 = state_12; [L492] var_15_arg_0 = var_15_arg_0 & mask_SORT_3 [L493] SORT_14 var_15 = var_15_arg_0; [L494] SORT_14 var_17_arg_0 = var_15; [L495] SORT_14 var_17_arg_1 = var_16; [L496] SORT_3 var_17 = var_17_arg_0 == var_17_arg_1; [L497] SORT_3 var_18_arg_0 = var_17; [L498] SORT_3 var_18 = ~var_18_arg_0; [L499] SORT_3 var_21_arg_0 = state_19; [L500] var_21_arg_0 = var_21_arg_0 & mask_SORT_3 [L501] SORT_14 var_21 = var_21_arg_0; [L502] SORT_14 var_22_arg_0 = var_21; [L503] SORT_14 var_22_arg_1 = var_16; [L504] SORT_3 var_22 = var_22_arg_0 == var_22_arg_1; [L505] SORT_3 var_23_arg_0 = var_18; [L506] SORT_3 var_23_arg_1 = var_22; [L507] SORT_3 var_23 = var_23_arg_0 | var_23_arg_1; [L508] SORT_3 var_27_arg_0 = var_23; [L509] SORT_3 var_27 = ~var_27_arg_0; [L510] SORT_3 var_28_arg_0 = var_26; [L511] SORT_3 var_28_arg_1 = var_27; [L512] SORT_3 var_28 = var_28_arg_0 & var_28_arg_1; [L513] var_28 = var_28 & mask_SORT_3 [L514] SORT_3 bad_29_arg_0 = var_28; [L515] CALL __VERIFIER_assert(!(bad_29_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 13:16:11,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 e89e5e5c49081a46f4bb1120b29875f7db71286809210e10b7d8629fd6832294 --- 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 13:16:12,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:16:12,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:16:12,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:16:12,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:16:12,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:16:12,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:16:12,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:16:12,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:16:12,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:16:12,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:16:12,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:16:12,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:16:12,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:16:12,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:16:12,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:16:12,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:16:12,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:16:12,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:16:12,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:16:12,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:16:12,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:16:12,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:16:12,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:16:12,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:16:12,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:16:12,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:16:12,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:16:12,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:16:12,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:16:12,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:16:12,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:16:12,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:16:12,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:16:12,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:16:12,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:16:12,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:16:12,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:16:12,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:16:12,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:16:12,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:16:12,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 13:16:12,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:16:12,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:16:12,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:16:12,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:16:12,800 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:16:12,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:16:12,800 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:16:12,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:16:12,801 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:16:12,801 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:16:12,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:16:12,801 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:16:12,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:16:12,802 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:16:12,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:16:12,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:16:12,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:16:12,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:16:12,805 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89e5e5c49081a46f4bb1120b29875f7db71286809210e10b7d8629fd6832294 [2022-12-14 13:16:13,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:16:13,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:16:13,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:16:13,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:16:13,024 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:16:13,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2022-12-14 13:16:15,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:16:15,868 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:16:15,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2022-12-14 13:16:15,880 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/1b0f98a84/4bfc634e430645419ae61df654fd6cba/FLAG6304a2a31 [2022-12-14 13:16:15,894 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/data/1b0f98a84/4bfc634e430645419ae61df654fd6cba [2022-12-14 13:16:15,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:16:15,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:16:15,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:16:15,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:16:15,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:16:15,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:16:15" (1/1) ... [2022-12-14 13:16:15,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716aeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:15, skipping insertion in model container [2022-12-14 13:16:15,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:16:15" (1/1) ... [2022-12-14 13:16:15,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:16:15,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:16:16,100 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c[1107,1120] [2022-12-14 13:16:16,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:16:16,306 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:16:16,314 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_f9287314-e6d4-46eb-bf5e-1f28184b2e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.usb_phy.c[1107,1120] [2022-12-14 13:16:16,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:16:16,408 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:16:16,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16 WrapperNode [2022-12-14 13:16:16,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:16:16,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:16:16,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:16:16,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:16:16,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,501 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2328 [2022-12-14 13:16:16,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:16:16,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:16:16,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:16:16,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:16:16,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:16:16,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:16:16,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:16:16,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:16:16,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (1/1) ... [2022-12-14 13:16:16,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:16:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:16,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:16:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:16:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:16:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:16:16,994 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:16:16,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:16:18,719 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:16:18,725 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:16:18,725 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:16:18,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:18 BoogieIcfgContainer [2022-12-14 13:16:18,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:16:18,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:16:18,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:16:18,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:16:18,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:16:15" (1/3) ... [2022-12-14 13:16:18,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4efae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:18, skipping insertion in model container [2022-12-14 13:16:18,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:16:16" (2/3) ... [2022-12-14 13:16:18,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4efae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:16:18, skipping insertion in model container [2022-12-14 13:16:18,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:16:18" (3/3) ... [2022-12-14 13:16:18,733 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.usb_phy.c [2022-12-14 13:16:18,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:16:18,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:16:18,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:16:18,783 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;@7aa619d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:16:18,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:16:18,786 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 13:16:18,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:16:18,791 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:18,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:16:18,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 13:16:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:18,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835318000] [2022-12-14 13:16:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:18,805 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 13:16:18,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:18,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:18,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 13:16:19,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:19,259 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 13:16:19,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:16:19,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:19,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835318000] [2022-12-14 13:16:19,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835318000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:16:19,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:16:19,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:16:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775864948] [2022-12-14 13:16:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:16:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:16:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:16:19,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:16:19,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:16:19,293 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 13:16:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:19,492 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 13:16:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:16:19,494 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 13:16:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:19,499 INFO L225 Difference]: With dead ends: 20 [2022-12-14 13:16:19,499 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 13:16:19,501 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 13:16:19,503 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:19,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:16:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 13:16:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 13:16:19,529 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 13:16:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 13:16:19,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 13:16:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:19,531 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 13:16:19,531 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 13:16:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 13:16:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:16:19,532 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:19,532 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 13:16:19,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:19,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:19,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:19,737 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 13:16:19,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:19,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674293390] [2022-12-14 13:16:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:19,750 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 13:16:19,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:19,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:19,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:20,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 13:16:20,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:20,656 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 13:16:20,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:20,815 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 13:16:20,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:20,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674293390] [2022-12-14 13:16:20,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674293390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:20,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36142356] [2022-12-14 13:16:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:20,816 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:20,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:16:20,817 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:16:20,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 13:16:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:22,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 13:16:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:22,330 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 13:16:22,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:22,425 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 13:16:22,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36142356] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:22,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573567605] [2022-12-14 13:16:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:16:22,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:22,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:22,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:16:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:16:22,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 2018 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 13:16:22,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:23,042 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 13:16:23,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:23,173 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 13:16:23,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573567605] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:23,173 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:16:23,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-12-14 13:16:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908521087] [2022-12-14 13:16:23,174 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:23,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:16:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:16:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:16:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:16:23,175 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 13:16:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:23,535 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 13:16:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:16:23,536 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 13:16:23,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:23,536 INFO L225 Difference]: With dead ends: 16 [2022-12-14 13:16:23,536 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 13:16:23,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-12-14 13:16:23,538 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:23,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:16:23,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 13:16:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 13:16:23,541 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 13:16:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 13:16:23,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 13:16:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:23,542 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 13:16:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 13:16:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 13:16:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:16:23,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:23,543 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 13:16:23,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:16:23,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 13:16:23,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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)] Forceful destruction successful, exit code 0 [2022-12-14 13:16:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:24,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 13:16:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:24,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591326910] [2022-12-14 13:16:24,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:16:24,153 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 13:16:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:24,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:24,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:25,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:16:25,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:25,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 3741 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 13:16:25,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:25,393 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 13:16:25,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:25,551 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 13:16:25,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591326910] [2022-12-14 13:16:25,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591326910] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1560269743] [2022-12-14 13:16:25,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:16:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:16:25,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:16:25,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 13:16:27,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:16:27,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 3741 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 13:16:28,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:28,179 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 13:16:28,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:28,285 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 13:16:28,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1560269743] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:28,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546929700] [2022-12-14 13:16:28,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:16:28,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:28,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:28,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:16:28,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:16:28,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:29,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 3741 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 13:16:29,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:29,063 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 13:16:29,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:29,182 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 13:16:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546929700] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:29,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:16:29,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-12-14 13:16:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322814025] [2022-12-14 13:16:29,183 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:29,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 13:16:29,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:16:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 13:16:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:16:29,184 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 13:16:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:29,714 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 13:16:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:16:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 13:16:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:29,715 INFO L225 Difference]: With dead ends: 19 [2022-12-14 13:16:29,715 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 13:16:29,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-12-14 13:16:29,716 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:29,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 13:16:29,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 13:16:29,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 13:16:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:16:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 13:16:29,719 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 13:16:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:29,719 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 13:16:29,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 13:16:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 13:16:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:16:29,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:29,720 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 13:16:29,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 13:16:29,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 13:16:30,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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)] Ended with exit code 0 [2022-12-14 13:16:30,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:30,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 13:16:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073609402] [2022-12-14 13:16:30,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:16:30,329 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 13:16:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:30,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (9)] Waiting until timeout for monitored process [2022-12-14 13:16:31,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 13:16:31,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:31,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 5464 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 13:16:31,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:31,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:32,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073609402] [2022-12-14 13:16:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073609402] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1153628992] [2022-12-14 13:16:32,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:16:32,174 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:32,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:16:32,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:16:32,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 13:16:35,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 13:16:35,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 5464 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 13:16:35,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:35,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:35,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1153628992] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608079373] [2022-12-14 13:16:35,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:16:35,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:35,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:35,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:35,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 13:16:37,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 13:16:37,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:37,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 5464 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 13:16:37,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:37,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:37,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608079373] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:37,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:16:37,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-12-14 13:16:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284959332] [2022-12-14 13:16:37,275 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:37,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 13:16:37,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:16:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 13:16:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:16:37,275 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 13:16:38,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:38,004 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 13:16:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:16:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-14 13:16:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:38,004 INFO L225 Difference]: With dead ends: 22 [2022-12-14 13:16:38,005 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 13:16:38,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:16:38,005 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:38,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:16:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 13:16:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-12-14 13:16:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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 13:16:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-12-14 13:16:38,008 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2022-12-14 13:16:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:38,008 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-12-14 13:16:38,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 13:16:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-12-14 13:16:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:16:38,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:38,009 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2022-12-14 13:16:38,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-12-14 13:16:38,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 13:16:38,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (9)] Ended with exit code 0 [2022-12-14 13:16:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:38,613 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1250702327, now seen corresponding path program 4 times [2022-12-14 13:16:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:38,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288515597] [2022-12-14 13:16:38,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:16:38,620 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 13:16:38,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:38,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:38,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (12)] Waiting until timeout for monitored process [2022-12-14 13:16:40,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:16:40,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:40,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 7187 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 13:16:40,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:40,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:40,673 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288515597] [2022-12-14 13:16:40,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288515597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1810175192] [2022-12-14 13:16:40,673 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:16:40,673 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:40,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:16:40,674 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:16:40,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-14 13:16:44,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:16:44,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:44,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 7187 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 13:16:44,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:45,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:45,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1810175192] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:45,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915346137] [2022-12-14 13:16:45,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:16:45,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:45,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:45,186 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:45,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 13:16:46,714 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:16:46,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:46,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 7187 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 13:16:46,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:46,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:47,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915346137] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:47,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:16:47,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 9] total 16 [2022-12-14 13:16:47,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138459501] [2022-12-14 13:16:47,137 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:47,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 13:16:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:16:47,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 13:16:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:16:47,139 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:16:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:16:48,016 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-12-14 13:16:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 13:16:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-14 13:16:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:16:48,017 INFO L225 Difference]: With dead ends: 25 [2022-12-14 13:16:48,017 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 13:16:48,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2022-12-14 13:16:48,017 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 13:16:48,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 13:16:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 13:16:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-12-14 13:16:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 13:16:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-12-14 13:16:48,020 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2022-12-14 13:16:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:16:48,021 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-12-14 13:16:48,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:16:48,021 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-12-14 13:16:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 13:16:48,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:16:48,021 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2022-12-14 13:16:48,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (12)] Ended with exit code 0 [2022-12-14 13:16:48,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-12-14 13:16:48,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 13:16:48,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:48,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:16:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:16:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash -826954269, now seen corresponding path program 5 times [2022-12-14 13:16:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:16:48,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775157023] [2022-12-14 13:16:48,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-14 13:16:48,633 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 13:16:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:16:48,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:16:48,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (15)] Waiting until timeout for monitored process [2022-12-14 13:16:51,431 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-14 13:16:51,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:51,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 8910 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 13:16:51,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:51,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:52,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:16:52,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775157023] [2022-12-14 13:16:52,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775157023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:52,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [666172542] [2022-12-14 13:16:52,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-14 13:16:52,098 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:16:52,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:16:52,099 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:16:52,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-12-14 13:16:59,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-14 13:16:59,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:16:59,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 8910 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-14 13:16:59,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:16:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:59,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:16:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:16:59,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [666172542] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:59,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200117774] [2022-12-14 13:16:59,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-14 13:16:59,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:16:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:16:59,682 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:16:59,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 13:17:23,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-12-14 13:17:23,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:17:23,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 8910 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-14 13:17:23,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:17:23,898 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:23,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:17:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:24,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200117774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:17:24,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:17:24,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 18 [2022-12-14 13:17:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363113679] [2022-12-14 13:17:24,098 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:17:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 13:17:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:17:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 13:17:24,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-12-14 13:17:24,099 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 13:17:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:17:25,124 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-12-14 13:17:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:17:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 20 [2022-12-14 13:17:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:17:25,125 INFO L225 Difference]: With dead ends: 28 [2022-12-14 13:17:25,125 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 13:17:25,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:17:25,126 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 13:17:25,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 41 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 13:17:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 13:17:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-12-14 13:17:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:17:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-14 13:17:25,129 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2022-12-14 13:17:25,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:17:25,129 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-14 13:17:25,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 13:17:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-14 13:17:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 13:17:25,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:17:25,130 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2022-12-14 13:17:25,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (15)] Ended with exit code 0 [2022-12-14 13:17:25,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-12-14 13:17:25,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 13:17:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:17:25,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:17:25,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:17:25,733 INFO L85 PathProgramCache]: Analyzing trace with hash 142558665, now seen corresponding path program 6 times [2022-12-14 13:17:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:17:25,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810355394] [2022-12-14 13:17:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-14 13:17:25,743 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 13:17:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:17:25,744 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:17:25,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (18)] Waiting until timeout for monitored process [2022-12-14 13:17:28,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-14 13:17:28,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:17:29,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 10633 conjuncts, 213 conjunts are in the unsatisfiable core [2022-12-14 13:17:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:17:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:30,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:17:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:38,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:17:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810355394] [2022-12-14 13:17:38,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810355394] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:17:38,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [46050721] [2022-12-14 13:17:38,803 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-14 13:17:38,803 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:17:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:17:38,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:17:38,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 13:17:52,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-14 13:17:52,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:17:52,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 10633 conjuncts, 282 conjunts are in the unsatisfiable core [2022-12-14 13:17:52,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:17:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:17:55,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:18:25,558 WARN L233 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 944 DAG size of output: 667 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:18:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:18:25,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [46050721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:18:25,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649237925] [2022-12-14 13:18:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-14 13:18:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:18:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:18:25,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:18:25,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 13:18:35,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-12-14 13:18:35,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:18:36,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 10633 conjuncts, 224 conjunts are in the unsatisfiable core [2022-12-14 13:18:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:18:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:18:37,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:18:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:18:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649237925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:18:50,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:18:50,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 36 [2022-12-14 13:18:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977572329] [2022-12-14 13:18:50,508 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:18:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 13:18:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:18:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 13:18:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=943, Unknown=4, NotChecked=0, Total=1260 [2022-12-14 13:18:50,509 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 36 states, 36 states have (on average 2.8333333333333335) internal successors, (102), 36 states have internal predecessors, (102), 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 13:18:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:18:52,549 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-12-14 13:18:52,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:18:52,549 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.8333333333333335) internal successors, (102), 36 states have internal predecessors, (102), 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 23 [2022-12-14 13:18:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:18:52,550 INFO L225 Difference]: With dead ends: 31 [2022-12-14 13:18:52,550 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 13:18:52,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=511, Invalid=1377, Unknown=4, NotChecked=0, Total=1892 [2022-12-14 13:18:52,551 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 43 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:18:52,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 13:18:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 13:18:52,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-12-14 13:18:52,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 13:18:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-12-14 13:18:52,557 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2022-12-14 13:18:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:18:52,557 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-12-14 13:18:52,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.8333333333333335) internal successors, (102), 36 states have internal predecessors, (102), 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 13:18:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-12-14 13:18:52,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 13:18:52,558 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:18:52,558 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-12-14 13:18:52,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 13:18:52,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 13:18:53,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (18)] Forceful destruction successful, exit code 0 [2022-12-14 13:18:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:18:53,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:18:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:18:53,161 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 7 times [2022-12-14 13:18:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:18:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448086331] [2022-12-14 13:18:53,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:18:53,169 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 13:18:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:18:53,170 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:18:53,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (21)] Waiting until timeout for monitored process [2022-12-14 13:18:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:18:56,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 12356 conjuncts, 341 conjunts are in the unsatisfiable core [2022-12-14 13:18:56,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:19:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:19:00,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:19:40,986 WARN L233 SmtUtils]: Spent 15.26s on a formula simplification. DAG size of input: 941 DAG size of output: 671 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:22:02,208 WARN L233 SmtUtils]: Spent 2.04m on a formula simplification. DAG size of input: 1269 DAG size of output: 697 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:22:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:22:03,245 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 13:22:03,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448086331] [2022-12-14 13:22:03,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448086331] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:22:03,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1645073150] [2022-12-14 13:22:03,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:22:03,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 13:22:03,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 13:22:03,246 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 13:22:03,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 13:22:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:22:12,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 12356 conjuncts, 397 conjunts are in the unsatisfiable core [2022-12-14 13:22:12,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:22:17,425 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:22:17,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:25:21,785 WARN L233 SmtUtils]: Spent 2.03m on a formula simplification. DAG size of input: 1084 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:26:10,563 WARN L233 SmtUtils]: Spent 13.86s on a formula simplification. DAG size of input: 793 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:26:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:11,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1645073150] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:26:11,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450158312] [2022-12-14 13:26:11,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:26:11,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:26:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:26:11,484 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:26:11,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 13:26:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:26:14,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 12356 conjuncts, 275 conjunts are in the unsatisfiable core [2022-12-14 13:26:14,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:17,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:26:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:39,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450158312] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:26:39,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 13:26:39,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 12, 12] total 49 [2022-12-14 13:26:39,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923108889] [2022-12-14 13:26:39,966 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 13:26:39,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 13:26:39,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 13:26:39,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 13:26:39,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1926, Unknown=14, NotChecked=0, Total=2352 [2022-12-14 13:26:39,968 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 13:26:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:26:43,846 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-12-14 13:26:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 13:26:43,847 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 26 [2022-12-14 13:26:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:26:43,848 INFO L225 Difference]: With dead ends: 34 [2022-12-14 13:26:43,848 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 13:26:43,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 346.6s TimeCoverageRelationStatistics Valid=698, Invalid=2594, Unknown=14, NotChecked=0, Total=3306 [2022-12-14 13:26:43,849 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 51 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:26:43,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 52 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 13:26:43,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 13:26:43,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-12-14 13:26:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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 13:26:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-12-14 13:26:43,854 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2022-12-14 13:26:43,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:26:43,855 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-12-14 13:26:43,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 13:26:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-12-14 13:26:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 13:26:43,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:26:43,856 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 1, 1, 1, 1] [2022-12-14 13:26:43,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 13:26:44,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 13:26:44,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (21)] Ended with exit code 0 [2022-12-14 13:26:44,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:26:44,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:26:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:26:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 637038473, now seen corresponding path program 8 times [2022-12-14 13:26:44,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:26:44,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291308741] [2022-12-14 13:26:44,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 13:26:44,488 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 13:26:44,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:26:44,491 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 13:26:44,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9287314-e6d4-46eb-bf5e-1f28184b2e09/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 (24)] Waiting until timeout for monitored process [2022-12-14 13:26:47,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 13:26:47,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:26:47,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 14079 conjuncts, 425 conjunts are in the unsatisfiable core [2022-12-14 13:26:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:26:54,593 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:26:54,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:27:14,644 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 494 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:29:32,954 WARN L233 SmtUtils]: Spent 1.56m on a formula simplification. DAG size of input: 999 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)