./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW --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 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- 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-4e7fbc6 [2022-11-23 16:05:11,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:05:11,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:05:11,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:05:11,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:05:11,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:05:11,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:05:11,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:05:11,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:05:11,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:05:11,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:05:11,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:05:11,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:05:11,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:05:11,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:05:11,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:05:11,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:05:11,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:05:11,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:05:11,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:05:11,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:05:11,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:05:11,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:05:11,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:05:11,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:05:11,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:05:11,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:05:11,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:05:11,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:05:11,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:05:11,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:05:11,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:05:11,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:05:11,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:05:11,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:05:11,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:05:11,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:05:11,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:05:11,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:05:11,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:05:11,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:05:11,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:05:11,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:05:11,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:05:11,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:05:11,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:05:11,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:05:11,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:05:11,884 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:05:11,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:05:11,885 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:05:11,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:05:11,886 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:05:11,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:05:11,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:05:11,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:05:11,887 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:05:11,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:05:11,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:05:11,888 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:05:11,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:05:11,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:05:11,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:05:11,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:05:11,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:05:11,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:05:11,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:05:11,891 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:05:11,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:05:11,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:05:11,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:05:11,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:05:11,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:05:11,893 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:05:11,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:05:11,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:05:11,894 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:05:11,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:05:11,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:05:11,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:05:11,895 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-23 16:05:12,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:05:12,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:05:12,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:05:12,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:05:12,200 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:05:12,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:05:15,280 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:05:15,595 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:05:15,595 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:05:15,610 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/ce36bb65a/baadb810b3fa4182b55977bbc8a57998/FLAG3c6cf6ee3 [2022-11-23 16:05:15,634 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/ce36bb65a/baadb810b3fa4182b55977bbc8a57998 [2022-11-23 16:05:15,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:05:15,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:05:15,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:05:15,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:05:15,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:05:15,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:15" (1/1) ... [2022-11-23 16:05:15,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302862fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:15, skipping insertion in model container [2022-11-23 16:05:15,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:05:15" (1/1) ... [2022-11-23 16:05:15,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:05:15,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:05:15,893 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-23 16:05:16,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:05:16,303 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:05:16,315 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-23 16:05:16,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:05:16,438 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:05:16,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16 WrapperNode [2022-11-23 16:05:16,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:05:16,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:05:16,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:05:16,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:05:16,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,635 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1482 [2022-11-23 16:05:16,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:05:16,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:05:16,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:05:16,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:05:16,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:05:16,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:05:16,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:05:16,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:05:16,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (1/1) ... [2022-11-23 16:05:16,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:05:16,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:16,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:05:16,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:05:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:05:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:05:17,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:05:17,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:07:23,838 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:07:23,868 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:07:23,868 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:07:23,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:23 BoogieIcfgContainer [2022-11-23 16:07:23,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:07:23,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:07:23,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:07:23,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:07:23,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:05:15" (1/3) ... [2022-11-23 16:07:23,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f952e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:23, skipping insertion in model container [2022-11-23 16:07:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:05:16" (2/3) ... [2022-11-23 16:07:23,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f952e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:23, skipping insertion in model container [2022-11-23 16:07:23,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:23" (3/3) ... [2022-11-23 16:07:23,881 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:07:23,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:07:23,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:07:23,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:07:23,966 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;@440c92b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:07:23,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:07:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:07:23,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:23,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:07:23,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:23,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-23 16:07:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:23,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425115151] [2022-11-23 16:07:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:07:24,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 16:07:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 16:07:24,577 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 16:07:24,579 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 16:07:24,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 16:07:24,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:07:24,587 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 16:07:24,591 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:07:24,629 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 16:07:24,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:07:24 BoogieIcfgContainer [2022-11-23 16:07:24,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:07:24,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:07:24,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:07:24,642 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:07:24,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:23" (3/4) ... [2022-11-23 16:07:24,645 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 16:07:24,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:07:24,647 INFO L158 Benchmark]: Toolchain (without parser) took 129005.36ms. Allocated memory was 148.9MB in the beginning and 889.2MB in the end (delta: 740.3MB). Free memory was 103.1MB in the beginning and 805.7MB in the end (delta: -702.6MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,647 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 148.9MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:07:24,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 796.42ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 54.6MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 195.89ms. Allocated memory was 148.9MB in the beginning and 195.0MB in the end (delta: 46.1MB). Free memory was 54.6MB in the beginning and 148.5MB in the end (delta: -93.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,649 INFO L158 Benchmark]: Boogie Preprocessor took 162.39ms. Allocated memory is still 195.0MB. Free memory was 148.5MB in the beginning and 140.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,650 INFO L158 Benchmark]: RCFGBuilder took 127071.86ms. Allocated memory was 195.0MB in the beginning and 889.2MB in the end (delta: 694.2MB). Free memory was 139.0MB in the beginning and 325.1MB in the end (delta: -186.1MB). Peak memory consumption was 532.2MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,651 INFO L158 Benchmark]: TraceAbstraction took 767.46ms. Allocated memory is still 889.2MB. Free memory was 324.0MB in the beginning and 806.8MB in the end (delta: -482.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:07:24,651 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 889.2MB. Free memory was 806.8MB in the beginning and 805.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:07:24,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 148.9MB. Free memory is still 96.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 796.42ms. Allocated memory is still 148.9MB. Free memory was 102.8MB in the beginning and 54.6MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 195.89ms. Allocated memory was 148.9MB in the beginning and 195.0MB in the end (delta: 46.1MB). Free memory was 54.6MB in the beginning and 148.5MB in the end (delta: -93.9MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 162.39ms. Allocated memory is still 195.0MB. Free memory was 148.5MB in the beginning and 140.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 127071.86ms. Allocated memory was 195.0MB in the beginning and 889.2MB in the end (delta: 694.2MB). Free memory was 139.0MB in the beginning and 325.1MB in the end (delta: -186.1MB). Peak memory consumption was 532.2MB. Max. memory is 16.1GB. * TraceAbstraction took 767.46ms. Allocated memory is still 889.2MB. Free memory was 324.0MB in the beginning and 806.8MB in the end (delta: -482.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 889.2MB. Free memory was 806.8MB in the beginning and 805.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 211, overapproximation of bitwiseOr at line 206, overapproximation of bitwiseAnd at line 173. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_3 var_75 = 0; [L40] const SORT_4 var_77 = 20; [L41] const SORT_2 var_81 = 3; [L42] const SORT_4 var_85 = 1; [L43] const SORT_2 var_91 = 4; [L44] const SORT_4 var_93 = 2; [L45] const SORT_2 var_117 = 12; [L46] const SORT_2 var_140 = 2; [L47] const SORT_2 var_181 = 15; [L48] const SORT_2 var_198 = 10; [L50] SORT_1 input_82; [L51] SORT_1 input_92; [L52] SORT_1 input_98; [L53] SORT_1 input_122; [L54] SORT_1 input_125; [L55] SORT_1 input_126; [L56] SORT_1 input_127; [L57] SORT_1 input_128; [L58] SORT_1 input_147; [L59] SORT_1 input_148; [L60] SORT_1 input_170; [L61] SORT_1 input_174; [L62] SORT_1 input_217; [L63] SORT_1 input_220; [L64] SORT_1 input_241; [L65] SORT_1 input_262; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_2 init_7_arg_1 = var_5; [L103] state_6 = init_7_arg_1 [L104] SORT_2 init_9_arg_1 = var_5; [L105] state_8 = init_9_arg_1 [L106] SORT_2 init_11_arg_1 = var_5; [L107] state_10 = init_11_arg_1 [L108] SORT_2 init_13_arg_1 = var_5; [L109] state_12 = init_13_arg_1 [L110] SORT_2 init_15_arg_1 = var_5; [L111] state_14 = init_15_arg_1 [L112] SORT_2 init_17_arg_1 = var_5; [L113] state_16 = init_17_arg_1 [L114] SORT_2 init_19_arg_1 = var_5; [L115] state_18 = init_19_arg_1 [L116] SORT_2 init_21_arg_1 = var_5; [L117] state_20 = init_21_arg_1 [L118] SORT_2 init_23_arg_1 = var_5; [L119] state_22 = init_23_arg_1 [L120] SORT_2 init_25_arg_1 = var_5; [L121] state_24 = init_25_arg_1 [L122] SORT_2 init_27_arg_1 = var_5; [L123] state_26 = init_27_arg_1 [L124] SORT_2 init_29_arg_1 = var_5; [L125] state_28 = init_29_arg_1 [L126] SORT_1 init_32_arg_1 = var_30; [L127] state_31 = init_32_arg_1 [L128] SORT_1 init_34_arg_1 = var_30; [L129] state_33 = init_34_arg_1 [L130] SORT_1 init_36_arg_1 = var_30; [L131] state_35 = init_36_arg_1 [L132] SORT_1 init_38_arg_1 = var_30; [L133] state_37 = init_38_arg_1 [L134] SORT_1 init_40_arg_1 = var_30; [L135] state_39 = init_40_arg_1 [L136] SORT_1 init_42_arg_1 = var_30; [L137] state_41 = init_42_arg_1 [L138] SORT_1 init_44_arg_1 = var_30; [L139] state_43 = init_44_arg_1 [L140] SORT_1 init_46_arg_1 = var_30; [L141] state_45 = init_46_arg_1 [L142] SORT_1 init_48_arg_1 = var_30; [L143] state_47 = init_48_arg_1 [L144] SORT_1 init_50_arg_1 = var_30; [L145] state_49 = init_50_arg_1 [L146] SORT_1 init_52_arg_1 = var_30; [L147] state_51 = init_52_arg_1 [L148] SORT_1 init_54_arg_1 = var_30; [L149] state_53 = init_54_arg_1 [L150] SORT_1 init_56_arg_1 = var_30; [L151] state_55 = init_56_arg_1 [L152] SORT_1 init_58_arg_1 = var_30; [L153] state_57 = init_58_arg_1 [L154] SORT_1 init_60_arg_1 = var_30; [L155] state_59 = init_60_arg_1 [L156] SORT_1 init_62_arg_1 = var_30; [L157] state_61 = init_62_arg_1 [L158] SORT_1 init_64_arg_1 = var_30; [L159] state_63 = init_64_arg_1 [L160] SORT_1 init_66_arg_1 = var_30; [L161] state_65 = init_66_arg_1 [L162] SORT_1 init_68_arg_1 = var_30; [L163] state_67 = init_68_arg_1 [L164] SORT_1 init_70_arg_1 = var_30; [L165] state_69 = init_70_arg_1 [L166] SORT_1 init_72_arg_1 = var_30; [L167] state_71 = init_72_arg_1 [L168] SORT_1 init_74_arg_1 = var_30; [L169] state_73 = init_74_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_8=0, var_117=12, var_140=2, var_181=15, var_198=10, var_30=0, var_5=0, var_75=0, var_77=20, var_81=3, var_85=1, var_91=4, var_93=2] [L172] input_82 = __VERIFIER_nondet_uchar() [L173] input_82 = input_82 & mask_SORT_1 [L174] input_92 = __VERIFIER_nondet_uchar() [L175] input_92 = input_92 & mask_SORT_1 [L176] input_98 = __VERIFIER_nondet_uchar() [L177] input_98 = input_98 & mask_SORT_1 [L178] input_122 = __VERIFIER_nondet_uchar() [L179] input_122 = input_122 & mask_SORT_1 [L180] input_125 = __VERIFIER_nondet_uchar() [L181] input_125 = input_125 & mask_SORT_1 [L182] input_126 = __VERIFIER_nondet_uchar() [L183] input_126 = input_126 & mask_SORT_1 [L184] input_127 = __VERIFIER_nondet_uchar() [L185] input_127 = input_127 & mask_SORT_1 [L186] input_128 = __VERIFIER_nondet_uchar() [L187] input_128 = input_128 & mask_SORT_1 [L188] input_147 = __VERIFIER_nondet_uchar() [L189] input_147 = input_147 & mask_SORT_1 [L190] input_148 = __VERIFIER_nondet_uchar() [L191] input_148 = input_148 & mask_SORT_1 [L192] input_170 = __VERIFIER_nondet_uchar() [L193] input_170 = input_170 & mask_SORT_1 [L194] input_174 = __VERIFIER_nondet_uchar() [L195] input_174 = input_174 & mask_SORT_1 [L196] input_217 = __VERIFIER_nondet_uchar() [L197] input_217 = input_217 & mask_SORT_1 [L198] input_220 = __VERIFIER_nondet_uchar() [L199] input_220 = input_220 & mask_SORT_1 [L200] input_241 = __VERIFIER_nondet_uchar() [L201] input_262 = __VERIFIER_nondet_uchar() [L204] SORT_3 var_76_arg_0 = var_75; [L205] SORT_2 var_76_arg_1 = state_28; [L206] SORT_4 var_76 = ((SORT_4)var_76_arg_0 << 8) | var_76_arg_1; [L207] var_76 = var_76 & mask_SORT_4 [L208] SORT_4 var_78_arg_0 = var_76; [L209] SORT_4 var_78_arg_1 = var_77; [L210] SORT_1 var_78 = var_78_arg_0 <= var_78_arg_1; [L211] SORT_1 var_79_arg_0 = ~state_73; [L212] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L213] SORT_1 var_79_arg_1 = ~var_78; [L214] var_79_arg_1 = var_79_arg_1 & mask_SORT_1 [L215] SORT_1 var_79 = var_79_arg_0 & var_79_arg_1; [L216] var_79 = var_79 & mask_SORT_1 [L217] SORT_1 bad_80_arg_0 = var_79; [L218] CALL __VERIFIER_assert(!(bad_80_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 16:07:24,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW --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 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e --- 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-4e7fbc6 [2022-11-23 16:07:27,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:07:27,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:07:27,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:07:27,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:07:27,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:07:27,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:07:27,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:07:27,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:07:27,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:07:27,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:07:27,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:07:27,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:07:27,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:07:27,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:07:27,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:07:27,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:07:27,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:07:27,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:07:27,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:07:27,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:07:27,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:07:27,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:07:27,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:07:27,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:07:27,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:07:27,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:07:27,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:07:27,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:07:27,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:07:27,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:07:27,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:07:27,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:07:27,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:07:27,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:07:27,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:07:27,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:07:27,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:07:27,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:07:27,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:07:27,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:07:27,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 16:07:27,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:07:27,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:07:27,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:07:27,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:07:27,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:07:27,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:07:27,239 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:07:27,240 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:07:27,240 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:07:27,240 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:07:27,241 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:07:27,242 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:07:27,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:07:27,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:07:27,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:07:27,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:07:27,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:07:27,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 16:07:27,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 16:07:27,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 16:07:27,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:07:27,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:07:27,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:07:27,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:07:27,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 16:07:27,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:07:27,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:27,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:07:27,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:07:27,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:07:27,246 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 16:07:27,247 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 16:07:27,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:07:27,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:07:27,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 16:07:27,248 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a363747858f755dcf7765e023ce6efb7203891cba18b65d67294674b3e7662e [2022-11-23 16:07:27,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:07:27,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:07:27,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:07:27,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:07:27,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:07:27,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:07:30,749 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:07:31,164 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:07:31,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:07:31,181 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/bfa8c2736/80d3951a9c004e989d3f8f0dfa286e4d/FLAGcc68b7f65 [2022-11-23 16:07:31,198 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/data/bfa8c2736/80d3951a9c004e989d3f8f0dfa286e4d [2022-11-23 16:07:31,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:07:31,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:07:31,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:31,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:07:31,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:07:31,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:31" (1/1) ... [2022-11-23 16:07:31,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129337f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:31, skipping insertion in model container [2022-11-23 16:07:31,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:07:31" (1/1) ... [2022-11-23 16:07:31,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:07:31,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:07:31,470 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-23 16:07:31,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:31,855 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:07:31,868 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_ce23ca77-7cb4-4fce-901e-4155afa3b838/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.krebs.2.prop1-func-interl.c[1014,1027] [2022-11-23 16:07:32,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:07:32,067 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:07:32,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32 WrapperNode [2022-11-23 16:07:32,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:07:32,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:32,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:07:32,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:07:32,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,299 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1482 [2022-11-23 16:07:32,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:07:32,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:07:32,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:07:32,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:07:32,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:07:32,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:07:32,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:07:32,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:07:32,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (1/1) ... [2022-11-23 16:07:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:07:32,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:32,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:07:32,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:07:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:07:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:07:33,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:07:33,016 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:07:35,202 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:07:35,209 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:07:35,209 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:07:35,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:35 BoogieIcfgContainer [2022-11-23 16:07:35,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:07:35,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:07:35,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:07:35,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:07:35,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:07:31" (1/3) ... [2022-11-23 16:07:35,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d2764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:35, skipping insertion in model container [2022-11-23 16:07:35,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:07:32" (2/3) ... [2022-11-23 16:07:35,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d2764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:07:35, skipping insertion in model container [2022-11-23 16:07:35,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:07:35" (3/3) ... [2022-11-23 16:07:35,220 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.krebs.2.prop1-func-interl.c [2022-11-23 16:07:35,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:07:35,238 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:07:35,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:07:35,293 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;@2d98cd53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:07:35,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:07:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:07:35,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:35,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:07:35,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 16:07:35,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:07:35,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794287199] [2022-11-23 16:07:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:35,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:07:35,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:07:35,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:07:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 16:07:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 16:07:35,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:35,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:07:35,914 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:07:35,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794287199] [2022-11-23 16:07:35,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794287199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:35,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:35,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:07:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305941029] [2022-11-23 16:07:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:07:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:07:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:07:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:07:35,973 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:36,244 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 16:07:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:07:36,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:07:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:36,257 INFO L225 Difference]: With dead ends: 20 [2022-11-23 16:07:36,258 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 16:07:36,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:07:36,264 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 [2022-11-23 16:07:36,265 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] [2022-11-23 16:07:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 16:07:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 16:07:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 16:07:36,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 16:07:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:36,297 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 16:07:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 16:07:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:07:36,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:36,298 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:36,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:07:36,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:07:36,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:36,511 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 16:07:36,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:07:36,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332071956] [2022-11-23 16:07:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:36,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:07:36,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:07:36,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:07:36,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 16:07:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:37,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 16:07:37,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:37,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:38,912 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:07:38,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332071956] [2022-11-23 16:07:38,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332071956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:38,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113256060] [2022-11-23 16:07:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:38,919 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:07:38,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:07:38,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:07:38,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 16:07:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:40,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 16:07:40,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:40,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:42,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113256060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:42,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085838366] [2022-11-23 16:07:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:42,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:42,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:42,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:07:42,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:07:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:43,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 16:07:43,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:43,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:07:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:44,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085838366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:07:44,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:07:44,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 12 [2022-11-23 16:07:44,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808757472] [2022-11-23 16:07:44,355 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:07:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:07:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:07:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:07:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-23 16:07:44,357 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-11-23 16:07:46,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:46,838 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 16:07:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:07:46,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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 [2022-11-23 16:07:46,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:46,840 INFO L225 Difference]: With dead ends: 19 [2022-11-23 16:07:46,840 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 16:07:46,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-23 16:07:46,842 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:46,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 18 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 16:07:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 16:07:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 16:07:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 16:07:46,848 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 16:07:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:46,849 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 16:07:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-11-23 16:07:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 16:07:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:07:46,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:46,850 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-23 16:07:46,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:07:47,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-23 16:07:47,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:07:47,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:47,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-23 16:07:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:07:47,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235867914] [2022-11-23 16:07:47,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:07:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:07:47,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:07:47,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:07:47,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 16:07:48,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:07:48,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:07:49,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-23 16:07:49,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:50,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:46,035 WARN L233 SmtUtils]: Spent 44.19s on a formula simplification. DAG size of input: 159 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:46,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:08:46,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235867914] [2022-11-23 16:08:46,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235867914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:46,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1560934571] [2022-11-23 16:08:46,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:08:46,079 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:08:46,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:08:46,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:08:46,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 16:08:49,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:08:49,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:08:49,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-23 16:08:49,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:08:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:50,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:25,658 WARN L233 SmtUtils]: Spent 29.27s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:25,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1560934571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:25,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864356800] [2022-11-23 16:09:25,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 16:09:25,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:25,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:25,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:25,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:09:26,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 16:09:26,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:09:26,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 3670 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-23 16:09:26,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:09:29,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:14,472 WARN L233 SmtUtils]: Spent 25.17s on a formula simplification. DAG size of input: 226 DAG size of output: 204 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:26,340 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification that was a NOOP. DAG size: 208 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:14,549 WARN L233 SmtUtils]: Spent 36.39s on a formula simplification. DAG size of input: 207 DAG size of output: 196 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:14,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864356800] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:14,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 16:11:14,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 12] total 37 [2022-11-23 16:11:14,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487165832] [2022-11-23 16:11:14,613 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 16:11:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-23 16:11:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 16:11:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-23 16:11:14,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=949, Unknown=16, NotChecked=0, Total=1332 [2022-11-23 16:11:14,617 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:11:20,568 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_28~0#1|)) (.cse31 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (let ((.cse32 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse31 (_ bv254 32))))) (.cse36 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse31 (_ bv255 32))))) (.cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse3))) (.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse9)))) (.cse4 (forall ((|ULTIMATE.start_main_~state_73~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_492_arg_0~0#1_17| (_ BitVec 8))) (let ((.cse37 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |ULTIMATE.start_main_~state_73~0#1|)))) .cse31))))) (or (not (= ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse37 .cse32))))) (_ bv0 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse37 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_492_arg_0~0#1_17|)))))))))))))))) .cse36)))))))))) (.cse11 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd |c_ULTIMATE.start_main_~var_76~0#1| |c_ULTIMATE.start_main_~var_85~0#1|)))))) (.cse2 (bvshl |c_ULTIMATE.start_main_~var_75~0#1| (_ bv8 32))) (.cse5 (forall ((|v_ULTIMATE.start_main_~var_79_arg_0~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse36 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_0~0#1_13|)))))) (_ bv0 8))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_28| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ BitVec 32))) (let ((.cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse0 (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd |c_ULTIMATE.start_main_~var_85~0#1| (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_28| (_ bv8 32)) .cse3) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|)))))) .cse1))))) .cse1)))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|))) (or (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse0 |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse1))) .cse2)) |c_ULTIMATE.start_main_~var_77~0#1|) (not (bvule .cse0 |c_ULTIMATE.start_main_~var_77~0#1|)))))) .cse4) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse7 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse7))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse7))))) .cse7)))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) .cse8) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse9))) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse10 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse10 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse10 .cse11))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|)))))))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse12 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse12 .cse11))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|)))))))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (= (bvadd |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (_ bv1 32)) (_ bv0 32)) (or (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_27| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ BitVec 32))) (let ((.cse14 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse13 (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_27| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse14))))) |c_ULTIMATE.start_main_~var_85~0#1|)))))))))))) (or (not (bvule .cse13 |c_ULTIMATE.start_main_~var_77~0#1|)) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse14 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse13 |c_ULTIMATE.start_main_~var_85~0#1|)))))))) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))))) .cse4) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse15 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse15 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse3)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse15))))) .cse15))))))))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_27| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_28| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ BitVec 32))) (let ((.cse17 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse16 (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_27| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd |c_ULTIMATE.start_main_~var_85~0#1| (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_28| (_ bv8 32)) .cse3) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|)))))) .cse17)))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse17))))))) (or (not (bvule .cse16 |c_ULTIMATE.start_main_~var_77~0#1|)) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse17 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse16 |c_ULTIMATE.start_main_~var_85~0#1|)))))))) .cse2)) |c_ULTIMATE.start_main_~var_77~0#1|))))) .cse4) (or .cse4 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ BitVec 32))) (let ((.cse19 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse18 (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse19))))) .cse19))))))) (or (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse19))))) |c_ULTIMATE.start_main_~var_77~0#1|) (not (bvule .cse18 |c_ULTIMATE.start_main_~var_77~0#1|))))))) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse20 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse20))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse20))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse20)))) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) .cse3)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse9))))) .cse9))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (or (exists ((|ULTIMATE.start_main_~var_76_arg_0~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (v_subst_8 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse22 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse21 (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |ULTIMATE.start_main_~var_76_arg_0~0#1| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse22 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl v_subst_7 (_ bv8 32)) (_ bv0 32))) (_ bv1 32))))))))) (bvshl v_subst_8 (_ bv8 32)))) (_ bv1 32)))))) .cse22))))))) (and (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) .cse21))))) .cse22)) |c_ULTIMATE.start_main_~state_28~0#1|) (bvule .cse21 |c_ULTIMATE.start_main_~var_77~0#1|))))) (exists ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (v_subst_8 (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse24 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse23 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse24 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl v_subst_7 (_ bv8 32)) (_ bv0 32))) (_ bv1 32))))))))) (bvshl v_subst_8 (_ bv8 32)))) (_ bv1 32)))))) .cse24))))) (and (= |c_ULTIMATE.start_main_~state_28~0#1| ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse23)) .cse24))) (exists ((|ULTIMATE.start_main_~var_76_arg_0~0#1| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |ULTIMATE.start_main_~var_76_arg_0~0#1| (_ bv8 32)) .cse23)) |c_ULTIMATE.start_main_~var_77~0#1|))))))) (or .cse5 (forall ((|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) .cse3)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse9))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32))) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse9))))) |c_ULTIMATE.start_main_~var_77~0#1|))) (= |c_ULTIMATE.start_main_~var_77~0#1| (_ bv20 32)) (or .cse5 (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse8)) .cse9))))) |c_ULTIMATE.start_main_~var_77~0#1|)) (or (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor .cse2 ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse25 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse25 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse25))))) |c_ULTIMATE.start_main_~var_85~0#1|)))))))) (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse25))))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|)) .cse5) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse26 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_16| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse3)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse26)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse26))))) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse26)))) .cse2) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse27 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse27 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse27))))) .cse27))))))))) .cse2) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (or (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ BitVec 32))) (let ((.cse29 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (let ((.cse28 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse29))))) .cse29))))) (or (not (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_26| (_ bv8 32)) .cse28)) |c_ULTIMATE.start_main_~var_77~0#1|)) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse29 ((_ zero_extend 24) ((_ extract 7 0) .cse28))))) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))))) .cse4) (= (_ bv1 8) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse30 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse30 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse30))))) .cse30))))))))) .cse2) |c_ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (= |c_ULTIMATE.start_main_~var_75~0#1| (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~var_79_arg_0~0#1_13| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse32 ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_79_arg_0~0#1_13|)))))) (_ bv0 8))) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8))) (bvule (bvand |c_ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse33 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse33 .cse11))))) .cse33))))) .cse33)))) .cse2)) |c_ULTIMATE.start_main_~var_77~0#1|))) (or .cse5 (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse34 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand .cse34 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse34 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 .cse34))))) |c_ULTIMATE.start_main_~var_85~0#1|)))))))))))))) .cse2) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|))) (exists ((|ULTIMATE.start_main_~var_492_arg_0~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~state_73~0#1_21| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~var_492_arg_0~0#1|) ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) |v_ULTIMATE.start_main_~state_73~0#1_21|))))))))))))))) |c_ULTIMATE.start_main_~state_73~0#1|)) (or (forall ((|ULTIMATE.start_main_~mask_SORT_4~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~mask_SORT_2~0#1| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ BitVec 32)) (|v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ BitVec 32))) (bvule (bvand (bvor ((_ zero_extend 24) ((_ extract 7 0) (let ((.cse35 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_2~0#1|))) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_17| (_ bv8 32)) ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (bvand |ULTIMATE.start_main_~mask_SORT_4~0#1| (bvor (bvshl |v_ULTIMATE.start_main_~var_76_arg_0~0#1_23| (_ bv8 32)) .cse3)) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse35)))) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_85~0#1|))))) .cse35))))) .cse35)))) .cse2) |ULTIMATE.start_main_~mask_SORT_4~0#1|) |c_ULTIMATE.start_main_~var_77~0#1|)) .cse5))))) is different from false [2022-11-23 16:11:29,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:32,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:34,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:39,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 16:11:41,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:44,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:46,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0, 1] [2022-11-23 16:11:48,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:51,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:11:54,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2022-11-23 16:12:23,817 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification that was a NOOP. DAG size: 227 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:23,820 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-23 16:12:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 16:12:23,820 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:12:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:23,823 INFO L225 Difference]: With dead ends: 31 [2022-11-23 16:12:23,824 INFO L226 Difference]: Without dead ends: 29 [2022-11-23 16:12:23,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 232.4s TimeCoverageRelationStatistics Valid=697, Invalid=1835, Unknown=22, NotChecked=98, Total=2652 [2022-11-23 16:12:23,826 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 44 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 32.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:23,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 47 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 79 Invalid, 11 Unknown, 1 Unchecked, 32.0s Time] [2022-11-23 16:12:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-23 16:12:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-23 16:12:23,864 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) [2022-11-23 16:12:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-23 16:12:23,866 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-23 16:12:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:23,866 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-23 16:12:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:12:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-23 16:12:23,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 16:12:23,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:23,868 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-23 16:12:23,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:24,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:24,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:24,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-23 16:12:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 16:12:24,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875260396] [2022-11-23 16:12:24,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:12:24,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 16:12:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 16:12:24,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 16:12:24,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 16:12:28,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-23 16:12:28,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:12:28,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 121 conjunts are in the unsatisfiable core [2022-11-23 16:12:28,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:36,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:13:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:13:08,007 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 16:13:08,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875260396] [2022-11-23 16:13:08,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875260396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:13:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [269585172] [2022-11-23 16:13:08,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:13:08,008 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 16:13:08,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 16:13:08,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 16:13:08,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce23ca77-7cb4-4fce-901e-4155afa3b838/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 16:15:22,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-23 16:15:22,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:15:22,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 8402 conjuncts, 357 conjunts are in the unsatisfiable core [2022-11-23 16:15:22,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:13,613 WARN L233 SmtUtils]: Spent 46.84s on a formula simplification. DAG size of input: 163 DAG size of output: 153 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:38,667 WARN L233 SmtUtils]: Spent 22.41s on a formula simplification that was a NOOP. DAG size: 173 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)