./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/count_up_down-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 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-4e7fbc6 [2022-11-23 14:21:38,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:21:38,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:21:38,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:21:38,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:21:38,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:21:38,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:21:38,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:21:38,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:21:38,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:21:38,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:21:38,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:21:38,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:21:38,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:21:38,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:21:38,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:21:38,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:21:38,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:21:38,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:21:38,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:21:38,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:21:38,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:21:38,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:21:38,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:21:38,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:21:38,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:21:38,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:21:38,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:21:38,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:21:38,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:21:38,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:21:38,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:21:38,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:21:38,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:21:38,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:21:38,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:21:38,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:21:38,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:21:38,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:21:38,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:21:38,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:21:38,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:21:38,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:21:38,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:21:38,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:21:38,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:21:38,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:21:38,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:21:38,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:21:38,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:21:38,981 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:21:38,982 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:21:38,983 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:21:38,983 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:21:38,984 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:21:38,984 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:21:38,984 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:21:38,985 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:21:38,985 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:21:38,986 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:21:38,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:21:38,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:21:38,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:21:38,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:21:38,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:21:38,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:21:38,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:21:38,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:21:38,989 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:21:38,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:21:38,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:21:38,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:21:38,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:21:38,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:21:38,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:21:38,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:21:38,993 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:21:38,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:21:38,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:21:38,994 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:21:38,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:21:38,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:21:38,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:21:38,996 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_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5879e48447fc7f125bd26345b332bcb57cae00365c3de30b5785162154970826 [2022-11-23 14:21:39,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:21:39,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:21:39,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:21:39,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:21:39,443 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:21:39,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loops/count_up_down-1.c [2022-11-23 14:21:42,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:21:42,835 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:21:42,836 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/sv-benchmarks/c/loops/count_up_down-1.c [2022-11-23 14:21:42,843 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/data/59f8a819e/245f4d203a564ff2b78d8b90540f67e0/FLAGdfd75f3c2 [2022-11-23 14:21:42,860 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/data/59f8a819e/245f4d203a564ff2b78d8b90540f67e0 [2022-11-23 14:21:42,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:21:42,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:21:42,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:21:42,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:21:42,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:21:42,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:42" (1/1) ... [2022-11-23 14:21:42,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342af250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:42, skipping insertion in model container [2022-11-23 14:21:42,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:42" (1/1) ... [2022-11-23 14:21:42,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:21:42,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:21:43,130 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_e3bcee95-2a2a-437e-9dc8-686711bec1f8/sv-benchmarks/c/loops/count_up_down-1.c[327,340] [2022-11-23 14:21:43,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:21:43,166 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:21:43,181 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_e3bcee95-2a2a-437e-9dc8-686711bec1f8/sv-benchmarks/c/loops/count_up_down-1.c[327,340] [2022-11-23 14:21:43,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:21:43,200 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:21:43,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43 WrapperNode [2022-11-23 14:21:43,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:21:43,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:21:43,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:21:43,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:21:43,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,238 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2022-11-23 14:21:43,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:21:43,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:21:43,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:21:43,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:21:43,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:21:43,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:21:43,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:21:43,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:21:43,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (1/1) ... [2022-11-23 14:21:43,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:21:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:43,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:21:43,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:21:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:21:43,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:21:43,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:21:43,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:21:43,467 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:21:43,470 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:21:43,666 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:21:43,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:21:43,712 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:21:43,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:43 BoogieIcfgContainer [2022-11-23 14:21:43,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:21:43,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:21:43,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:21:43,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:21:43,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:42" (1/3) ... [2022-11-23 14:21:43,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55672a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:43, skipping insertion in model container [2022-11-23 14:21:43,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:43" (2/3) ... [2022-11-23 14:21:43,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55672a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:43, skipping insertion in model container [2022-11-23 14:21:43,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:43" (3/3) ... [2022-11-23 14:21:43,741 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down-1.c [2022-11-23 14:21:43,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:21:43,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:21:43,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:21:43,919 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;@78f475f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:21:43,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:21:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:21:43,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:43,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:21:43,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:21:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:43,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2022-11-23 14:21:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206372320] [2022-11-23 14:21:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:44,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206372320] [2022-11-23 14:21:44,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206372320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:44,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:44,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:21:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265394165] [2022-11-23 14:21:44,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:44,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:21:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:44,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:21:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:21:44,499 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) [2022-11-23 14:21:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:44,614 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-23 14:21:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:21:44,618 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 [2022-11-23 14:21:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:44,637 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:21:44,638 INFO L226 Difference]: Without dead ends: 6 [2022-11-23 14:21:44,642 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 [2022-11-23 14:21:44,646 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:44,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-23 14:21:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-23 14:21:44,691 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) [2022-11-23 14:21:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-23 14:21:44,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-23 14:21:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:44,697 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-23 14:21:44,698 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) [2022-11-23 14:21:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-23 14:21:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:21:44,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:44,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:21:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:21:44,701 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:21:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 57619255, now seen corresponding path program 1 times [2022-11-23 14:21:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:44,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001529615] [2022-11-23 14:21:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:45,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:45,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001529615] [2022-11-23 14:21:45,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001529615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:45,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136834408] [2022-11-23 14:21:45,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:45,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:45,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:45,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:21:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 14:21:45,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:45,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:45,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136834408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:45,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1574074269] [2022-11-23 14:21:45,705 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 14:21:45,705 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:45,710 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:45,717 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:45,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:45,951 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:46,189 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 [2022-11-23 14:21:46,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:46,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:46,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-23 14:21:46,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810785964] [2022-11-23 14:21:46,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:46,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:21:46,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:46,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:21:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:21:46,192 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) [2022-11-23 14:21:46,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:46,347 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-23 14:21:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:21:46,349 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 [2022-11-23 14:21:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:46,349 INFO L225 Difference]: With dead ends: 13 [2022-11-23 14:21:46,349 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 14:21:46,350 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 [2022-11-23 14:21:46,351 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:46,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:21:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 14:21:46,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-23 14:21:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 14:21:46,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 14:21:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:46,363 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 14:21:46,363 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) [2022-11-23 14:21:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 14:21:46,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:21:46,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:46,364 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-23 14:21:46,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:46,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:46,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:21:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2116862682, now seen corresponding path program 2 times [2022-11-23 14:21:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927874796] [2022-11-23 14:21:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:47,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927874796] [2022-11-23 14:21:47,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927874796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486901693] [2022-11-23 14:21:47,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:21:47,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:47,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:47,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:47,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:21:47,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 14:21:47,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:47,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 14:21:47,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:47,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:47,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486901693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:47,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [644790761] [2022-11-23 14:21:47,947 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 14:21:47,948 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:47,948 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:47,948 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:47,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:48,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:48,244 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 [2022-11-23 14:21:48,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:48,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:48,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-23 14:21:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127819545] [2022-11-23 14:21:48,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:21:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:21:48,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:48,247 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) [2022-11-23 14:21:51,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:51,420 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2022-11-23 14:21:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:21:51,423 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 [2022-11-23 14:21:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:51,424 INFO L225 Difference]: With dead ends: 20 [2022-11-23 14:21:51,424 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 14:21:51,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:21:51,426 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 [2022-11-23 14:21:51,427 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] [2022-11-23 14:21:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 14:21:51,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 14:21:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-23 14:21:51,436 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-23 14:21:51,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:51,437 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-23 14:21:51,437 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) [2022-11-23 14:21:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-23 14:21:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:21:51,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:51,438 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-23 14:21:51,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:51,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:21:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1541264262, now seen corresponding path program 3 times [2022-11-23 14:21:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:51,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084494968] [2022-11-23 14:21:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:52,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:52,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084494968] [2022-11-23 14:21:52,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084494968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:52,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332347811] [2022-11-23 14:21:52,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:21:52,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:52,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:52,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:52,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:21:53,221 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:21:53,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:21:53,224 WARN L261 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-23 14:21:53,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:54,226 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:54,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:21:56,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332347811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:56,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1751082595] [2022-11-23 14:21:56,324 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 14:21:56,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:56,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:56,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:56,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:21:56,391 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:21:56,646 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 [2022-11-23 14:21:56,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:21:56,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:21:56,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2022-11-23 14:21:56,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625811998] [2022-11-23 14:21:56,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:21:56,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:21:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:21:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:21:56,650 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) [2022-11-23 14:22:39,187 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:24,630 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-23 14:24:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 14:24:24,633 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 [2022-11-23 14:24:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:24,634 INFO L225 Difference]: With dead ends: 32 [2022-11-23 14:24:24,634 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 14:24:24,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 149.6s TimeCoverageRelationStatistics Valid=788, Invalid=1957, Unknown=11, NotChecked=0, Total=2756 [2022-11-23 14:24:24,636 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 95 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:24,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 24 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:24:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 14:24:24,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 14:24:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-23 14:24:24,652 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-23 14:24:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:24,653 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-23 14:24:24,653 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) [2022-11-23 14:24:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-23 14:24:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 14:24:24,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:24,654 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-11-23 14:24:24,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:24,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:24,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:24,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash 359802950, now seen corresponding path program 4 times [2022-11-23 14:24:24,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:24,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834874696] [2022-11-23 14:24:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:27,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:27,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834874696] [2022-11-23 14:24:27,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834874696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:24:27,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365701198] [2022-11-23 14:24:27,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:24:27,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:27,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:27,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:27,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3bcee95-2a2a-437e-9dc8-686711bec1f8/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:24:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:31,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-23 14:24:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:33,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:24:42,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365701198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:42,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626754237] [2022-11-23 14:24:42,005 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-23 14:24:42,005 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:24:42,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:24:42,006 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:24:42,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:24:42,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:24:42,508 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 [2022-11-23 14:24:42,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:24:42,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:24:42,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 70 [2022-11-23 14:24:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466124177] [2022-11-23 14:24:42,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:24:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-23 14:24:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-23 14:24:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1245, Invalid=4157, Unknown=0, NotChecked=0, Total=5402 [2022-11-23 14:24:42,514 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) [2022-11-23 14:24:46,921 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 [2022-11-23 14:28:21,606 WARN L233 SmtUtils]: Spent 1.59m 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) [2022-11-23 14:28:24,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-23 14:30:53,453 WARN L233 SmtUtils]: Spent 1.54m 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) [2022-11-23 14:34:06,508 WARN L233 SmtUtils]: Spent 1.28m 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) [2022-11-23 14:34:08,600 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 [2022-11-23 14:34:10,618 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 (< 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 [2022-11-23 14:36:47,875 WARN L233 SmtUtils]: Spent 50.43s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)