./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/count_up_down-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/count_up_down-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS --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 32bit --witnessprinter.graph.data.programhash 5879e48447fc7f125bd26345b332bcb57cae00365c3de30b5785162154970826 --- 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-8393723 [2022-11-19 08:35:58,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:35:58,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:35:58,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:35:58,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:35:59,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:35:59,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:35:59,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:35:59,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:35:59,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:35:59,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:35:59,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:35:59,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:35:59,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:35:59,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:35:59,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:35:59,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:35:59,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:35:59,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:35:59,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:35:59,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:35:59,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:35:59,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:35:59,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:35:59,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:35:59,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:35:59,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:35:59,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:35:59,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:35:59,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:35:59,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:35:59,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:35:59,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:35:59,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:35:59,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:35:59,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:35:59,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:35:59,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:35:59,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:35:59,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:35:59,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:35:59,082 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:35:59,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:35:59,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:35:59,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:35:59,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:35:59,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:35:59,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:35:59,128 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:35:59,128 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:35:59,129 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:35:59,129 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:35:59,130 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:35:59,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:35:59,131 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:35:59,131 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:35:59,131 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:35:59,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:35:59,132 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:35:59,132 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:35:59,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:35:59,133 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:35:59,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:35:59,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:35:59,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:35:59,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:35:59,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:35:59,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:35:59,137 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:35:59,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:35:59,137 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:35:59,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:35:59,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:35:59,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:35:59,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:35:59,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:35:59,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:35:59,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:35:59,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:35:59,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:35:59,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:35:59,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:35:59,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:35:59,141 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_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5879e48447fc7f125bd26345b332bcb57cae00365c3de30b5785162154970826 [2022-11-19 08:35:59,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:35:59,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:35:59,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:35:59,514 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:35:59,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:35:59,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/loops/count_up_down-1.c [2022-11-19 08:35:59,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/data/5f5fa4890/dcb836b05625491e899af61c7333d277/FLAG2a81ae609 [2022-11-19 08:36:00,217 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:00,218 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/sv-benchmarks/c/loops/count_up_down-1.c [2022-11-19 08:36:00,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/data/5f5fa4890/dcb836b05625491e899af61c7333d277/FLAG2a81ae609 [2022-11-19 08:36:00,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/data/5f5fa4890/dcb836b05625491e899af61c7333d277 [2022-11-19 08:36:00,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:00,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:00,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:00,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:00,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:00,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:00,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282af28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00, skipping insertion in model container [2022-11-19 08:36:00,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:00,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:00,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:36:00,873 WARN L234 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_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/sv-benchmarks/c/loops/count_up_down-1.c[327,340] [2022-11-19 08:36:00,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:00,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:36:00,926 WARN L234 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_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/sv-benchmarks/c/loops/count_up_down-1.c[327,340] [2022-11-19 08:36:00,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:00,948 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:36:00,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00 WrapperNode [2022-11-19 08:36:00,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:00,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:00,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:36:00,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:36:00,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:00,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:00,994 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-11-19 08:36:00,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:00,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:36:00,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:36:00,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:36:01,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:36:01,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:36:01,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:36:01,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:36:01,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (1/1) ... [2022-11-19 08:36:01,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:01,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:36:01,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:36:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:36:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:36:01,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:36:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:36:01,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:36:01,203 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:36:01,408 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:36:01,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:36:01,463 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:36:01,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:01 BoogieIcfgContainer [2022-11-19 08:36:01,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:36:01,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:36:01,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:36:01,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:36:01,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:00" (1/3) ... [2022-11-19 08:36:01,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:01, skipping insertion in model container [2022-11-19 08:36:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:00" (2/3) ... [2022-11-19 08:36:01,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b0e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:01, skipping insertion in model container [2022-11-19 08:36:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:01" (3/3) ... [2022-11-19 08:36:01,476 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down-1.c [2022-11-19 08:36:01,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:36:01,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:36:01,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:36:01,601 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;@ef9cf99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:36:01,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:36:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:36:01,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:01,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:36:01,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2022-11-19 08:36:01,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:01,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960930438] [2022-11-19 08:36:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:01,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:02,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:02,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960930438] [2022-11-19 08:36:02,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960930438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:36:02,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:36:02,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:36:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641371884] [2022-11-19 08:36:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:36:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:36:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:36:02,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:36:02,248 INFO L87 Difference]: Start difference. First 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:02,307 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-19 08:36:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:36:02,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-19 08:36:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:02,319 INFO L225 Difference]: With dead ends: 15 [2022-11-19 08:36:02,319 INFO L226 Difference]: Without dead ends: 6 [2022-11-19 08:36:02,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:36:02,327 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:36:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-19 08:36:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-19 08:36:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:02,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-19 08:36:02,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-19 08:36:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:02,377 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-19 08:36:02,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-19 08:36:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:36:02,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:02,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:36:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:36:02,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 57619255, now seen corresponding path program 1 times [2022-11-19 08:36:02,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953110223] [2022-11-19 08:36:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:02,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:02,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:02,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953110223] [2022-11-19 08:36:02,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953110223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:02,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082012904] [2022-11-19 08:36:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:02,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:02,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:02,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:36:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:02,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 08:36:02,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:03,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:03,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082012904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:03,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2087596253] [2022-11-19 08:36:03,242 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:36:03,242 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:03,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:03,252 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:03,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:03,419 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:36:03,624 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '77#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) 1 0)) (= |#NULL.offset| 0) (not (< 0 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:36:03,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:36:03,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:36:03,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-19 08:36:03,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610515717] [2022-11-19 08:36:03,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:36:03,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 08:36:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:03,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 08:36:03,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:36:03,630 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:03,768 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-19 08:36:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:36:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 08:36:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:03,769 INFO L225 Difference]: With dead ends: 13 [2022-11-19 08:36:03,769 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 08:36:03,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:36:03,771 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:03,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:36:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 08:36:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 08:36:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:36:03,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:36:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:03,777 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:36:03,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:36:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:36:03,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:03,778 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-19 08:36:03,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:36:03,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:03,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:03,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2116862682, now seen corresponding path program 2 times [2022-11-19 08:36:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:03,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229201112] [2022-11-19 08:36:03,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:04,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:04,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229201112] [2022-11-19 08:36:04,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229201112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:04,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485874685] [2022-11-19 08:36:04,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:36:04,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:04,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:04,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:36:04,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 08:36:04,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:36:04,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 08:36:04,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:04,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:05,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485874685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [169766175] [2022-11-19 08:36:05,146 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:36:05,146 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:05,147 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:05,147 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:05,147 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:05,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:36:05,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '178#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) 1 0)) (= |#NULL.offset| 0) (not (< 0 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:36:05,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:36:05,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:36:05,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-19 08:36:05,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204077149] [2022-11-19 08:36:05,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:36:05,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-19 08:36:05,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:05,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-19 08:36:05,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:36:05,449 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:36:08,511 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2022-11-19 08:36:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 08:36:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:36:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:36:08,513 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:36:08,513 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 08:36:08,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-11-19 08:36:08,515 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:36:08,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 10 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:36:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 08:36:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 08:36:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:08,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-19 08:36:08,526 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-19 08:36:08,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:36:08,527 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-19 08:36:08,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-19 08:36:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:36:08,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:08,528 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-19 08:36:08,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:36:08,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:08,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:36:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1541264262, now seen corresponding path program 3 times [2022-11-19 08:36:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:08,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226758274] [2022-11-19 08:36:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:36:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:09,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:36:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226758274] [2022-11-19 08:36:09,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226758274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:36:09,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999177765] [2022-11-19 08:36:09,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:36:09,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:36:09,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:09,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:36:09,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:36:10,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:36:10,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:36:10,252 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-19 08:36:10,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:36:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:11,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:36:13,449 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:36:13,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999177765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:36:13,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [461310506] [2022-11-19 08:36:13,451 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:36:13,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:36:13,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:36:13,452 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:36:13,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:36:13,517 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:36:13,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '369#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) 1 0)) (= |#NULL.offset| 0) (not (< 0 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:36:13,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:36:13,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:36:13,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-11-19 08:36:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145688412] [2022-11-19 08:36:13,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:36:13,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-19 08:36:13,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:36:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-19 08:36:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 08:36:13,769 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:51,390 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:38:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:38:41,363 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-19 08:38:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-19 08:38:41,369 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-19 08:38:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:38:41,370 INFO L225 Difference]: With dead ends: 32 [2022-11-19 08:38:41,370 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 08:38:41,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 149.0s TimeCoverageRelationStatistics Valid=783, Invalid=1958, Unknown=15, NotChecked=0, Total=2756 [2022-11-19 08:38:41,372 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 95 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:38:41,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 24 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:38:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 08:38:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-19 08:38:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:38:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-19 08:38:41,398 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-19 08:38:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:38:41,398 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-19 08:38:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:38:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-19 08:38:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 08:38:41,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:38:41,402 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-19 08:38:41,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:38:41,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-19 08:38:41,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:38:41,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:38:41,609 INFO L85 PathProgramCache]: Analyzing trace with hash 359802950, now seen corresponding path program 4 times [2022-11-19 08:38:41,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:38:41,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343164014] [2022-11-19 08:38:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:38:41,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:38:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:44,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:38:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343164014] [2022-11-19 08:38:44,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343164014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:38:44,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759453082] [2022-11-19 08:38:44,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:38:44,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:38:44,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:38:44,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:38:44,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aaa75be-0b70-4ffd-a11a-32040c1a1aa3/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:38:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:38:48,855 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-19 08:38:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:38:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:38:51,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:39:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:39:00,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759453082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:39:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506101413] [2022-11-19 08:39:00,181 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:39:00,181 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:39:00,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:39:00,181 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:39:00,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:39:00,240 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:39:00,657 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '728#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod |ULTIMATE.start_main_~y~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296)) 1 0)) (= |#NULL.offset| 0) (not (< 0 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:39:00,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:39:00,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:39:00,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 70 [2022-11-19 08:39:00,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952846396] [2022-11-19 08:39:00,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:39:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-19 08:39:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:39:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-19 08:39:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1245, Invalid=4157, Unknown=0, NotChecked=0, Total=5402 [2022-11-19 08:39:00,662 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 71 states, 71 states have (on average 1.028169014084507) internal successors, (73), 70 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:39:04,880 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (div |c_ULTIMATE.start_main_~y~0#1| 4294967296))) (let ((.cse5 (* .cse6 4294967296)) (.cse2 (* (div |c_ULTIMATE.start_main_~n~0#1| 4294967296) 4294967296))) (let ((.cse3 (* (div |c_ULTIMATE.start_main_~x~0#1| 4294967296) 4294967296)) (.cse4 (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1| .cse2)) (.cse1 (+ |c_ULTIMATE.start_main_~n~0#1| .cse5)) (.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (and (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296) .cse0) (< 0 (mod (+ 4294967282 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967278) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 18) 4294967296) .cse0)) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967293) 4294967296))) (or (< .cse1 (+ |c_ULTIMATE.start_main_~y~0#1| .cse2 1)) (<= (+ |c_ULTIMATE.start_main_~n~0#1| .cse3) .cse4)) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967294) 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967288) 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967280) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967287) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 19) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967277) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967281) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 15) 4294967296) .cse0)) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 22) 4294967296) .cse0) (< 0 (mod (+ 4294967274 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 20) 4294967296) .cse0) (< 0 (mod (+ 4294967276 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967289) 4294967296))) (or (<= (+ |c_ULTIMATE.start_main_~n~0#1| .cse5 .cse3 4294967296) .cse4) (<= (+ |c_ULTIMATE.start_main_~y~0#1| .cse2) .cse1)) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967290) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967286) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967285) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 21) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967275) 4294967296))) (or (< 0 (mod (+ 4294967292 |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) .cse0)) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) .cse0) (< 0 (mod (+ 4294967283 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967291) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967295) 4294967296)) (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296))) (<= .cse6 0) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967284) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967279) 4294967296)) (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 17) 4294967296))))))) is different from false [2022-11-19 08:42:21,857 WARN L233 SmtUtils]: Spent 1.51m on a formula simplification that was a NOOP. DAG size: 201 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:42:24,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 08:44:47,670 WARN L233 SmtUtils]: Spent 1.88m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:44:49,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 08:44:50,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 08:48:29,817 WARN L233 SmtUtils]: Spent 1.20m on a formula simplification that was a NOOP. DAG size: 192 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:48:31,964 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (and (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296) .cse0) (< 0 (mod (+ 4294967282 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967278) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 18) 4294967296) .cse0)) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967293) 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967294) 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967288) 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 16) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967280) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967287) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 19) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967277) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967281) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 15) 4294967296) .cse0)) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967289) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967290) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967286) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967285) 4294967296))) (or (< 0 (mod (+ 4294967292 |c_ULTIMATE.start_main_~x~0#1|) 4294967296)) (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) .cse0)) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) .cse0) (< 0 (mod (+ 4294967283 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (= (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) .cse0) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967291) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967295) 4294967296)) (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296))) (or (= (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) .cse0) (< 0 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296)) (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967284) 4294967296))) (or (< 0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4294967279) 4294967296)) (= .cse0 (mod (+ |c_ULTIMATE.start_main_~y~0#1| 17) 4294967296))))) is different from false [2022-11-19 08:51:14,377 WARN L233 SmtUtils]: Spent 44.14s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)