./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:54:14,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:54:14,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:54:14,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:54:14,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:54:14,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:54:14,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:54:14,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:54:14,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:54:14,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:54:14,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:54:14,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:54:14,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:54:14,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:54:14,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:54:14,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:54:14,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:54:14,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:54:14,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:54:14,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:54:14,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:54:14,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:54:14,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:54:14,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:54:14,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:54:14,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:54:14,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:54:14,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:54:14,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:54:14,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:54:14,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:54:14,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:54:14,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:54:14,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:54:14,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:54:14,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:54:14,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:54:14,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:54:14,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:54:14,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:54:14,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:54:14,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 14:54:14,819 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:54:14,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:54:14,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:54:14,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:54:14,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:54:14,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:54:14,821 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:54:14,821 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:54:14,821 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:54:14,821 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:54:14,822 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:54:14,822 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:54:14,823 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:54:14,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:54:14,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:54:14,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:54:14,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:54:14,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:54:14,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:54:14,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:54:14,825 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:54:14,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:54:14,826 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_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 [2022-12-14 14:54:14,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:54:15,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:54:15,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:54:15,009 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:54:15,009 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:54:15,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:17,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:54:17,743 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:54:17,743 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:17,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/6556bc826/8481a6e5bf85458f968e0e6a762773e6/FLAG562040715 [2022-12-14 14:54:17,762 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/6556bc826/8481a6e5bf85458f968e0e6a762773e6 [2022-12-14 14:54:17,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:54:17,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:54:17,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:54:17,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:54:17,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:54:17,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:54:17" (1/1) ... [2022-12-14 14:54:17,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65023694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:17, skipping insertion in model container [2022-12-14 14:54:17,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:54:17" (1/1) ... [2022-12-14 14:54:17,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:54:17,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:54:17,934 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_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-12-14 14:54:18,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:54:18,074 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:54:18,082 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_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-12-14 14:54:18,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:54:18,163 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:54:18,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18 WrapperNode [2022-12-14 14:54:18,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:54:18,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:54:18,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:54:18,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:54:18,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,234 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 887 [2022-12-14 14:54:18,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:54:18,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:54:18,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:54:18,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:54:18,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:54:18,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:54:18,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:54:18,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:54:18,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (1/1) ... [2022-12-14 14:54:18,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:54:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:54:18,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:54:18,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:54:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:54:18,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:54:18,543 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:54:18,545 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:54:48,951 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:54:48,966 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:54:48,966 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:54:48,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:54:48 BoogieIcfgContainer [2022-12-14 14:54:48,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:54:48,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:54:48,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:54:48,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:54:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:54:17" (1/3) ... [2022-12-14 14:54:48,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc80ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:54:48, skipping insertion in model container [2022-12-14 14:54:48,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:18" (2/3) ... [2022-12-14 14:54:48,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44dc80ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:54:48, skipping insertion in model container [2022-12-14 14:54:48,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:54:48" (3/3) ... [2022-12-14 14:54:48,974 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:48,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:54:48,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:54:49,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:54:49,025 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;@2634a9b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:54:49,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:54:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:54:49,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:49,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:54:49,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:54:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-12-14 14:54:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:54:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344555492] [2022-12-14 14:54:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:54:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:54:49,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:54:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:54:49,257 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:54:49,258 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:54:49,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 14:54:49,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:54:49,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:54:49,267 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:54:49,278 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-12-14 14:54:49,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:54:49 BoogieIcfgContainer [2022-12-14 14:54:49,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:54:49,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:54:49,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:54:49,284 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:54:49,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:54:48" (3/4) ... [2022-12-14 14:54:49,287 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:54:49,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:54:49,288 INFO L158 Benchmark]: Toolchain (without parser) took 31522.92ms. Allocated memory was 130.0MB in the beginning and 931.1MB in the end (delta: 801.1MB). Free memory was 96.9MB in the beginning and 671.0MB in the end (delta: -574.0MB). Peak memory consumption was 229.9MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,288 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:54:49,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.52ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 63.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.18ms. Allocated memory is still 130.0MB. Free memory was 63.1MB in the beginning and 51.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,289 INFO L158 Benchmark]: Boogie Preprocessor took 73.57ms. Allocated memory was 130.0MB in the beginning and 169.9MB in the end (delta: 39.8MB). Free memory was 51.0MB in the beginning and 130.8MB in the end (delta: -79.8MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,290 INFO L158 Benchmark]: RCFGBuilder took 30659.48ms. Allocated memory was 169.9MB in the beginning and 931.1MB in the end (delta: 761.3MB). Free memory was 130.8MB in the beginning and 702.4MB in the end (delta: -571.7MB). Peak memory consumption was 563.7MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,290 INFO L158 Benchmark]: TraceAbstraction took 314.37ms. Allocated memory is still 931.1MB. Free memory was 701.4MB in the beginning and 671.0MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-12-14 14:54:49,290 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 931.1MB. Free memory is still 671.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:54:49,292 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.52ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 63.1MB in the end (delta: 33.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.18ms. Allocated memory is still 130.0MB. Free memory was 63.1MB in the beginning and 51.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.57ms. Allocated memory was 130.0MB in the beginning and 169.9MB in the end (delta: 39.8MB). Free memory was 51.0MB in the beginning and 130.8MB in the end (delta: -79.8MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * RCFGBuilder took 30659.48ms. Allocated memory was 169.9MB in the beginning and 931.1MB in the end (delta: 761.3MB). Free memory was 130.8MB in the beginning and 702.4MB in the end (delta: -571.7MB). Peak memory consumption was 563.7MB. Max. memory is 16.1GB. * TraceAbstraction took 314.37ms. Allocated memory is still 931.1MB. Free memory was 701.4MB in the beginning and 671.0MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 931.1MB. Free memory is still 671.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 145, overapproximation of bitwiseAnd at line 115. 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_16 = 0; [L39] const SORT_4 var_39 = 1; [L40] const SORT_4 var_40 = 0; [L41] const SORT_2 var_47 = 1; [L42] const SORT_3 var_49 = 0; [L43] const SORT_4 var_52 = 2; [L44] const SORT_2 var_62 = 0; [L46] SORT_1 input_48; [L47] SORT_1 input_56; [L48] SORT_1 input_63; [L49] SORT_1 input_69; [L50] SORT_1 input_95; [L51] SORT_1 input_99; [L52] SORT_1 input_102; [L53] SORT_1 input_103; [L54] SORT_1 input_109; [L55] SORT_1 input_115; [L56] SORT_1 input_130; [L57] SORT_1 input_148; [L59] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L60] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L61] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L62] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L63] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L64] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L65] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L66] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L67] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_2 init_7_arg_1 = var_5; [L77] state_6 = init_7_arg_1 [L78] SORT_2 init_9_arg_1 = var_5; [L79] state_8 = init_9_arg_1 [L80] SORT_2 init_11_arg_1 = var_5; [L81] state_10 = init_11_arg_1 [L82] SORT_2 init_13_arg_1 = var_5; [L83] state_12 = init_13_arg_1 [L84] SORT_2 init_15_arg_1 = var_5; [L85] state_14 = init_15_arg_1 [L86] SORT_1 init_18_arg_1 = var_16; [L87] state_17 = init_18_arg_1 [L88] SORT_1 init_20_arg_1 = var_16; [L89] state_19 = init_20_arg_1 [L90] SORT_1 init_22_arg_1 = var_16; [L91] state_21 = init_22_arg_1 [L92] SORT_1 init_24_arg_1 = var_16; [L93] state_23 = init_24_arg_1 [L94] SORT_1 init_26_arg_1 = var_16; [L95] state_25 = init_26_arg_1 [L96] SORT_1 init_28_arg_1 = var_16; [L97] state_27 = init_28_arg_1 [L98] SORT_1 init_30_arg_1 = var_16; [L99] state_29 = init_30_arg_1 [L100] SORT_1 init_32_arg_1 = var_16; [L101] state_31 = init_32_arg_1 [L102] SORT_1 init_34_arg_1 = var_16; [L103] state_33 = init_34_arg_1 [L104] SORT_1 init_36_arg_1 = var_16; [L105] state_35 = init_36_arg_1 [L106] SORT_1 init_38_arg_1 = var_16; [L107] state_37 = init_38_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_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_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_6=0, state_8=0, var_16=0, var_39=1, var_40=0, var_47=1, var_49=0, var_5=0, var_52=2, var_62=0] [L110] input_48 = __VERIFIER_nondet_uchar() [L111] input_56 = __VERIFIER_nondet_uchar() [L112] input_63 = __VERIFIER_nondet_uchar() [L113] input_69 = __VERIFIER_nondet_uchar() [L114] input_95 = __VERIFIER_nondet_uchar() [L115] input_95 = input_95 & mask_SORT_1 [L116] input_99 = __VERIFIER_nondet_uchar() [L117] input_99 = input_99 & mask_SORT_1 [L118] input_102 = __VERIFIER_nondet_uchar() [L119] input_102 = input_102 & mask_SORT_1 [L120] input_103 = __VERIFIER_nondet_uchar() [L121] input_103 = input_103 & mask_SORT_1 [L122] input_109 = __VERIFIER_nondet_uchar() [L123] input_109 = input_109 & mask_SORT_1 [L124] input_115 = __VERIFIER_nondet_uchar() [L125] input_115 = input_115 & mask_SORT_1 [L126] input_130 = __VERIFIER_nondet_uchar() [L127] input_148 = __VERIFIER_nondet_uchar() [L130] SORT_1 var_41_arg_0 = state_25; [L131] SORT_4 var_41_arg_1 = var_39; [L132] SORT_4 var_41_arg_2 = var_40; [L133] SORT_4 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L134] SORT_1 var_42_arg_0 = state_35; [L135] SORT_4 var_42_arg_1 = var_39; [L136] SORT_4 var_42_arg_2 = var_40; [L137] SORT_4 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L138] SORT_4 var_43_arg_0 = var_41; [L139] SORT_4 var_43_arg_1 = var_42; [L140] SORT_4 var_43 = var_43_arg_0 + var_43_arg_1; [L141] var_43 = var_43 & mask_SORT_4 [L142] SORT_4 var_44_arg_0 = var_43; [L143] SORT_4 var_44_arg_1 = var_39; [L144] SORT_1 var_44 = var_44_arg_0 <= var_44_arg_1; [L145] SORT_1 var_45_arg_0 = ~state_37; [L146] var_45_arg_0 = var_45_arg_0 & mask_SORT_1 [L147] SORT_1 var_45_arg_1 = ~var_44; [L148] var_45_arg_1 = var_45_arg_1 & mask_SORT_1 [L149] SORT_1 var_45 = var_45_arg_0 & var_45_arg_1; [L150] var_45 = var_45 & mask_SORT_1 [L151] SORT_1 bad_46_arg_0 = var_45; [L152] CALL __VERIFIER_assert(!(bad_46_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:54:49,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:54:50,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:54:50,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:54:50,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:54:50,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:54:50,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:54:50,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:54:50,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:54:50,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:54:50,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:54:50,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:54:50,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:54:50,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:54:50,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:54:50,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:54:50,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:54:50,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:54:50,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:54:50,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:54:50,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:54:50,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:54:50,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:54:50,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:54:50,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:54:50,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:54:50,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:54:50,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:54:50,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:54:50,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:54:50,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:54:50,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:54:50,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:54:50,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:54:50,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:54:50,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:54:50,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:54:50,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:54:50,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:54:50,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:54:50,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:54:50,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:54:50,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-12-14 14:54:50,798 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:54:50,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:54:50,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:54:50,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:54:50,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:54:50,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:54:50,799 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:54:50,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:54:50,799 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:54:50,800 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:54:50,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:54:50,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:54:50,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:54:50,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:54:50,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:54:50,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:54:50,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:54:50,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:54:50,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:54:50,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:54:50,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:54:50,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:54:50,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:54:50,803 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:54:50,803 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:54:50,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:54:50,804 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:54:50,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:54:50,804 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_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b858f1b7d7e422f92942487fe145697848da6d54ca5cecd99638059a776ef3b6 [2022-12-14 14:54:51,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:54:51,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:54:51,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:54:51,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:54:51,038 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:54:51,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:53,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:54:53,923 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:54:53,924 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:53,933 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/e1dd4d5fd/5565dafcf2a64e0e8261350d4ef7eb27/FLAG228ac4249 [2022-12-14 14:54:53,943 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/data/e1dd4d5fd/5565dafcf2a64e0e8261350d4ef7eb27 [2022-12-14 14:54:53,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:54:53,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:54:53,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:54:53,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:54:53,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:54:53,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:54:53" (1/1) ... [2022-12-14 14:54:53,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@911039d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:53, skipping insertion in model container [2022-12-14 14:54:53,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:54:53" (1/1) ... [2022-12-14 14:54:53,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:54:53,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:54:54,099 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_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-12-14 14:54:54,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:54:54,237 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:54:54,248 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_e6db444b-3633-4ab9-8fbf-d898f070983f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.1.prop1-func-interl.c[1014,1027] [2022-12-14 14:54:54,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:54:54,346 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:54:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54 WrapperNode [2022-12-14 14:54:54,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:54:54,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:54:54,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:54:54,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:54:54,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,420 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 887 [2022-12-14 14:54:54,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:54:54,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:54:54,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:54:54,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:54:54,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:54:54,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:54:54,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:54:54,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:54:54,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (1/1) ... [2022-12-14 14:54:54,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:54:54,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:54:54,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:54:54,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:54:54,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:54:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:54:54,742 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:54:54,744 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:54:55,932 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:54:55,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:54:55,937 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:54:55,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:54:55 BoogieIcfgContainer [2022-12-14 14:54:55,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:54:55,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:54:55,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:54:55,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:54:55,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:54:53" (1/3) ... [2022-12-14 14:54:55,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0bad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:54:55, skipping insertion in model container [2022-12-14 14:54:55,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:54:54" (2/3) ... [2022-12-14 14:54:55,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d0bad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:54:55, skipping insertion in model container [2022-12-14 14:54:55,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:54:55" (3/3) ... [2022-12-14 14:54:55,950 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.1.prop1-func-interl.c [2022-12-14 14:54:55,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:54:55,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:54:56,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:54:56,011 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;@7def128f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:54:56,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:54:56,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 14:54:56,019 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:56,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 14:54:56,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:54:56,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-12-14 14:54:56,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:54:56,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149984358] [2022-12-14 14:54:56,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:56,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:54:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:54:56,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:54:56,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 14:54:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:56,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 14:54:56,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:54:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:54:56,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:54:56,400 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:54:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149984358] [2022-12-14 14:54:56,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149984358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:54:56,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:54:56,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:54:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978757403] [2022-12-14 14:54:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:54:56,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 14:54:56,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:54:56,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 14:54:56,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 14:54:56,435 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:54:56,976 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-12-14 14:54:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:54:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 14:54:56,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:54:56,983 INFO L225 Difference]: With dead ends: 20 [2022-12-14 14:54:56,983 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 14:54:56,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:54:56,988 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:54:56,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:54:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 14:54:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-12-14 14:54:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 14:54:57,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 14:54:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:54:57,011 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 14:54:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:54:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 14:54:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 14:54:57,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:54:57,011 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-14 14:54:57,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:54:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:54:57,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:54:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:54:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-12-14 14:54:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:54:57,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893946482] [2022-12-14 14:54:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:54:57,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:54:57,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:54:57,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:54:57,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 14:54:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:54:57,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-14 14:54:58,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:54:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:54:58,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:55:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:55:04,149 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:55:04,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893946482] [2022-12-14 14:55:04,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893946482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:55:04,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [511766074] [2022-12-14 14:55:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:55:04,150 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:55:04,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:55:04,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:55:04,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 14:55:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:55:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 80 conjunts are in the unsatisfiable core [2022-12-14 14:55:05,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:55:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:55:05,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:55:36,187 WARN L233 SmtUtils]: Spent 24.45s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:55:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:55:36,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [511766074] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:55:36,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566449280] [2022-12-14 14:55:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:55:36,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:55:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:55:36,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:55:36,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:55:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:55:36,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-14 14:55:36,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:55:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:55:37,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:55:50,809 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 80 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:56:23,831 WARN L233 SmtUtils]: Spent 24.40s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:56:52,864 WARN L233 SmtUtils]: Spent 24.51s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:56:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:56:52,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566449280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:56:52,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 14:56:52,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 16 [2022-12-14 14:56:52,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895137292] [2022-12-14 14:56:52,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 14:56:52,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 14:56:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:56:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 14:56:52,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=166, Unknown=9, NotChecked=0, Total=240 [2022-12-14 14:56:52,995 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:56:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:56:54,487 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 14:56:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:56:54,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 14:56:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:56:54,488 INFO L225 Difference]: With dead ends: 16 [2022-12-14 14:56:54,488 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 14:56:54,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 110.9s TimeCoverageRelationStatistics Valid=105, Invalid=228, Unknown=9, NotChecked=0, Total=342 [2022-12-14 14:56:54,489 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:56:54,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 14:56:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 14:56:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-12-14 14:56:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:56:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 14:56:54,492 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-12-14 14:56:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:56:54,492 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-12-14 14:56:54,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:56:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 14:56:54,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 14:56:54,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:56:54,493 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 14:56:54,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-14 14:56:54,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:56:54,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 14:56:55,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 14:56:55,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:56:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:56:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-12-14 14:56:55,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:56:55,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742394023] [2022-12-14 14:56:55,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:56:55,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:56:55,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:56:55,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:56:55,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 14:56:56,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:56:56,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:56:56,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 208 conjunts are in the unsatisfiable core [2022-12-14 14:56:56,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:56:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:56:58,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:57:08,746 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 287 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:57:35,611 WARN L233 SmtUtils]: Spent 22.48s on a formula simplification that was a NOOP. DAG size: 772 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:57:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:36,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:57:36,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742394023] [2022-12-14 14:57:36,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742394023] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:57:36,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [811476240] [2022-12-14 14:57:36,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:57:36,220 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 14:57:36,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 14:57:36,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 14:57:36,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 14:57:38,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:57:38,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:57:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 206 conjunts are in the unsatisfiable core [2022-12-14 14:57:38,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:57:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:57:42,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:58:13,531 WARN L233 SmtUtils]: Spent 29.68s on a formula simplification. DAG size of input: 73 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:58:39,679 WARN L233 SmtUtils]: Spent 20.48s on a formula simplification that was a NOOP. DAG size: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:59:21,987 WARN L233 SmtUtils]: Spent 31.86s on a formula simplification that was a NOOP. DAG size: 774 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:59:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:59:22,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [811476240] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:59:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275291388] [2022-12-14 14:59:22,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 14:59:22,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:59:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:59:22,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:59:22,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:59:23,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 14:59:23,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:59:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 14:59:23,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:59:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:59:25,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:00:27,251 WARN L233 SmtUtils]: Spent 57.99s on a formula simplification. DAG size of input: 133 DAG size of output: 132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:01:16,869 WARN L233 SmtUtils]: Spent 37.41s on a formula simplification that was a NOOP. DAG size: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:01:46,402 WARN L233 SmtUtils]: Spent 28.47s on a formula simplification that was a NOOP. DAG size: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:01:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:01:46,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275291388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:01:46,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 15:01:46,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 24 [2022-12-14 15:01:46,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954227190] [2022-12-14 15:01:46,589 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 15:01:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 15:01:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 15:01:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 15:01:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=449, Unknown=10, NotChecked=0, Total=552 [2022-12-14 15:01:46,590 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:01:54,228 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 [0] [2022-12-14 15:01:56,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:03,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:05,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:07,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:09,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:12,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 15:02:12,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 15:02:12,274 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-12-14 15:02:12,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 15:02:12,275 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 15:02:12,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 15:02:12,275 INFO L225 Difference]: With dead ends: 19 [2022-12-14 15:02:12,276 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 15:02:12,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 287.1s TimeCoverageRelationStatistics Valid=167, Invalid=578, Unknown=11, NotChecked=0, Total=756 [2022-12-14 15:02:12,276 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-12-14 15:02:12,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 7 Unknown, 0 Unchecked, 18.1s Time] [2022-12-14 15:02:12,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 15:02:12,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-12-14 15:02:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:02:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 15:02:12,282 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-12-14 15:02:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 15:02:12,282 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 15:02:12,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 15:02:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 15:02:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 15:02:12,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 15:02:12,283 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-12-14 15:02:12,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-12-14 15:02:12,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 15:02:12,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 15:02:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:02:12,886 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 15:02:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 15:02:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-12-14 15:02:12,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 15:02:12,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478720954] [2022-12-14 15:02:12,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:02:12,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 15:02:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 15:02:12,893 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 15:02:12,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 15:02:16,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 15:02:16,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:02:17,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 472 conjunts are in the unsatisfiable core [2022-12-14 15:02:17,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:02:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:02:29,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:03:25,155 WARN L233 SmtUtils]: Spent 49.46s on a formula simplification that was a NOOP. DAG size: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:05:10,129 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification. DAG size of input: 2310 DAG size of output: 2087 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:06:44,451 WARN L233 SmtUtils]: Spent 1.06m on a formula simplification that was a NOOP. DAG size: 3582 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:06:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:06:47,903 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 15:06:47,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478720954] [2022-12-14 15:06:47,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478720954] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 15:06:47,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [816041677] [2022-12-14 15:06:47,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 15:06:47,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 15:06:47,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 15:06:47,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 15:06:47,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6db444b-3633-4ab9-8fbf-d898f070983f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-12-14 15:06:50,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 15:06:50,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 15:06:50,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 203 conjunts are in the unsatisfiable core [2022-12-14 15:06:51,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 15:07:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 15:07:11,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 15:07:41,545 WARN L233 SmtUtils]: Spent 26.83s on a formula simplification. DAG size of input: 73 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:08:25,400 WARN L233 SmtUtils]: Spent 34.82s on a formula simplification that was a NOOP. DAG size: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 15:09:13,209 WARN L233 SmtUtils]: Spent 35.44s on a formula simplification that was a NOOP. DAG size: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)