./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/sum02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/sum02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:59:02,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:59:02,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:59:02,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:59:02,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:59:02,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:59:02,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:59:02,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:59:02,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:59:02,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:59:02,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:59:02,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:59:02,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:59:02,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:59:02,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:59:02,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:59:02,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:59:02,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:59:02,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:59:02,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:59:02,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:59:02,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:59:02,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:59:02,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:59:02,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:59:02,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:59:02,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:59:02,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:59:02,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:59:02,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:59:02,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:59:02,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:59:02,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:59:02,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:59:02,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:59:02,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:59:02,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:59:02,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:59:02,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:59:02,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:59:02,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:59:02,725 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:59:02,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:59:02,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:59:02,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:59:02,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:59:02,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:59:02,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:59:02,752 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:59:02,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:59:02,753 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:59:02,753 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:59:02,753 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:59:02,753 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:59:02,753 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:59:02,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:59:02,754 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:59:02,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:59:02,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:59:02,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:59:02,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:59:02,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:59:02,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:59:02,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:59:02,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:59:02,756 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:59:02,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:59:02,757 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_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 [2022-12-14 12:59:02,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:59:02,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:59:02,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:59:02,939 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:59:02,939 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:59:02,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/bitvector/sum02-2.c [2022-12-14 12:59:05,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:59:05,656 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:59:05,656 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/sv-benchmarks/c/bitvector/sum02-2.c [2022-12-14 12:59:05,660 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/data/306869871/f961048f4f40433f991a2b9f89de3a7e/FLAGc101df4b9 [2022-12-14 12:59:06,080 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/data/306869871/f961048f4f40433f991a2b9f89de3a7e [2022-12-14 12:59:06,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:59:06,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:59:06,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:59:06,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:59:06,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:59:06,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e517bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06, skipping insertion in model container [2022-12-14 12:59:06,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:59:06,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:59:06,197 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_f1c72786-1763-4a1f-99b3-c00107766090/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2022-12-14 12:59:06,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:59:06,213 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:59:06,222 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_f1c72786-1763-4a1f-99b3-c00107766090/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2022-12-14 12:59:06,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:59:06,233 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:59:06,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06 WrapperNode [2022-12-14 12:59:06,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:59:06,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:59:06,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:59:06,234 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:59:06,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,255 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2022-12-14 12:59:06,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:59:06,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:59:06,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:59:06,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:59:06,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,268 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:59:06,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:59:06,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:59:06,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:59:06,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (1/1) ... [2022-12-14 12:59:06,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:59:06,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:59:06,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:59:06,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:59:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:59:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:59:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:59:06,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:59:06,381 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:59:06,383 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:59:06,477 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:59:06,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:59:06,519 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:59:06,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:59:06 BoogieIcfgContainer [2022-12-14 12:59:06,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:59:06,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:59:06,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:59:06,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:59:06,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:59:06" (1/3) ... [2022-12-14 12:59:06,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63243a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:59:06, skipping insertion in model container [2022-12-14 12:59:06,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:59:06" (2/3) ... [2022-12-14 12:59:06,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63243a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:59:06, skipping insertion in model container [2022-12-14 12:59:06,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:59:06" (3/3) ... [2022-12-14 12:59:06,530 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02-2.c [2022-12-14 12:59:06,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:59:06,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:59:06,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:59:06,605 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;@d46d0e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:59:06,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:59:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:59:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:59:06,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:59:06,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:59:06,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:59:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:59:06,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2279365, now seen corresponding path program 1 times [2022-12-14 12:59:06,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:59:06,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906942627] [2022-12-14 12:59:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:06,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:59:06,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:59:06,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88258577] [2022-12-14 12:59:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:06,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:59:06,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:59:06,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:59:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:59:06,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:59:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:59:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:06,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:59:06,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:59:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906942627] [2022-12-14 12:59:06,822 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:59:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88258577] [2022-12-14 12:59:06,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88258577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:59:06,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:59:06,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:59:06,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056352510] [2022-12-14 12:59:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:59:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:59:06,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:59:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:59:06,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:59:06,851 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2022-12-14 12:59:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:59:06,873 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-12-14 12:59:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:59:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 [2022-12-14 12:59:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:59:06,881 INFO L225 Difference]: With dead ends: 13 [2022-12-14 12:59:06,881 INFO L226 Difference]: Without dead ends: 6 [2022-12-14 12:59:06,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:59:06,885 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:59:06,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:59:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-12-14 12:59:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-14 12:59:06,905 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) [2022-12-14 12:59:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-12-14 12:59:06,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-12-14 12:59:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:59:06,906 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-12-14 12:59:06,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2022-12-14 12:59:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-12-14 12:59:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:59:06,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:59:06,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:59:06,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:59:07,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:07,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:59:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:59:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash 70441173, now seen corresponding path program 1 times [2022-12-14 12:59:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:59:07,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303308063] [2022-12-14 12:59:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:59:07,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:59:07,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811798719] [2022-12-14 12:59:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:07,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:07,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:59:07,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:59:07,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:59:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:59:07,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 12:59:07,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:59:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:07,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:59:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:07,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:59:07,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303308063] [2022-12-14 12:59:07,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:59:07,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811798719] [2022-12-14 12:59:07,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811798719] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:59:07,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [872435151] [2022-12-14 12:59:07,435 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 12:59:07,435 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:59:07,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:59:07,442 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:59:07,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:59:07,557 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:59:08,057 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '79#(and (not (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616)) (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 12:59:08,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:59:08,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:59:08,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 12:59:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107557535] [2022-12-14 12:59:08,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:59:08,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 12:59:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:59:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 12:59:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:59:08,060 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:59:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:59:08,122 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2022-12-14 12:59:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:59:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 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) Word has length 5 [2022-12-14 12:59:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:59:08,123 INFO L225 Difference]: With dead ends: 10 [2022-12-14 12:59:08,123 INFO L226 Difference]: Without dead ends: 7 [2022-12-14 12:59:08,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 12:59:08,125 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:59:08,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:59:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-12-14 12:59:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-12-14 12:59:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:59:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-12-14 12:59:08,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-12-14 12:59:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:59:08,128 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-12-14 12:59:08,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:59:08,129 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-12-14 12:59:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:59:08,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:59:08,129 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 12:59:08,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:59:08,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:08,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:59:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:59:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2111510075, now seen corresponding path program 2 times [2022-12-14 12:59:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:59:08,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750684679] [2022-12-14 12:59:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:08,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:59:08,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:59:08,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [631839201] [2022-12-14 12:59:08,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:59:08,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:59:08,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:59:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:59:08,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:59:08,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:59:08,531 WARN L261 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 12:59:08,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:59:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:08,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:59:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:13,414 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:59:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750684679] [2022-12-14 12:59:13,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:59:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631839201] [2022-12-14 12:59:13,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631839201] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:59:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750182808] [2022-12-14 12:59:13,416 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 12:59:13,416 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:59:13,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:59:13,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:59:13,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:59:13,534 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:59:19,439 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '147#(and (not (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616)) (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 12:59:19,439 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:59:19,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:59:19,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-12-14 12:59:19,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261235872] [2022-12-14 12:59:19,440 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:59:19,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:59:19,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:59:19,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:59:19,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-14 12:59:19,442 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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) [2022-12-14 12:59:31,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:59:31,214 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2022-12-14 12:59:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 12:59:31,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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 6 [2022-12-14 12:59:31,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:59:31,215 INFO L225 Difference]: With dead ends: 15 [2022-12-14 12:59:31,216 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 12:59:31,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:59:31,217 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:59:31,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 12:59:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 12:59:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 12:59:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2022-12-14 12:59:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-12-14 12:59:31,221 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2022-12-14 12:59:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:59:31,222 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-12-14 12:59:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 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) [2022-12-14 12:59:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-12-14 12:59:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:59:31,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:59:31,222 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2022-12-14 12:59:31,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:59:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:31,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:59:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:59:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash 474459589, now seen corresponding path program 3 times [2022-12-14 12:59:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:59:31,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086358359] [2022-12-14 12:59:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:59:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:59:31,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 12:59:31,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394834961] [2022-12-14 12:59:31,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:59:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:59:31,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:59:31,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:59:31,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:59:31,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:59:31,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:59:31,625 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-14 12:59:31,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:59:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:31,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:59:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:59:47,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:59:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086358359] [2022-12-14 12:59:47,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 12:59:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394834961] [2022-12-14 12:59:47,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394834961] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:59:47,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121274561] [2022-12-14 12:59:47,416 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 12:59:47,416 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:59:47,416 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:59:47,416 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:59:47,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:59:47,533 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:59:56,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '272#(and (not (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616)) (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 12:59:56,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:59:56,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 12:59:56,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-12-14 12:59:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529017404] [2022-12-14 12:59:56,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 12:59:56,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 12:59:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:59:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 12:59:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:59:56,028 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:00:25,548 WARN L233 SmtUtils]: Spent 29.07s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:27,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:00:49,867 WARN L233 SmtUtils]: Spent 19.88s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:25,275 WARN L233 SmtUtils]: Spent 35.30s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:27,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:01:37,983 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:01:39,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:02,732 WARN L233 SmtUtils]: Spent 20.63s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:02:12,676 WARN L233 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:02:18,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:02:29,619 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:02:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:02:29,624 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2022-12-14 13:02:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 13:02:29,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 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 10 [2022-12-14 13:02:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:02:29,625 INFO L225 Difference]: With dead ends: 24 [2022-12-14 13:02:29,625 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 13:02:29,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 164.0s TimeCoverageRelationStatistics Valid=272, Invalid=656, Unknown=2, NotChecked=0, Total=930 [2022-12-14 13:02:29,626 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 41 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 28 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:02:29,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 10 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 93 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2022-12-14 13:02:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 13:02:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 13:02:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:02:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-12-14 13:02:29,636 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2022-12-14 13:02:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:02:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-12-14 13:02:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:02:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-12-14 13:02:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:02:29,637 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:02:29,637 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2022-12-14 13:02:29,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:02:29,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:29,838 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:02:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:02:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1552364997, now seen corresponding path program 4 times [2022-12-14 13:02:29,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:02:29,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016750012] [2022-12-14 13:02:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:02:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:02:29,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 13:02:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085845805] [2022-12-14 13:02:29,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:02:29,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:02:29,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:02:29,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:02:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1c72786-1763-4a1f-99b3-c00107766090/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:02:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:02:30,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-14 13:02:30,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:02:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:02:30,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:04:36,005 WARN L233 SmtUtils]: Spent 9.83s on a formula simplification. DAG size of input: 64 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:05:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 88 refuted. 17 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:05:03,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:05:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016750012] [2022-12-14 13:05:03,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 13:05:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085845805] [2022-12-14 13:05:03,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085845805] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:05:03,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601358847] [2022-12-14 13:05:03,426 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:05:03,426 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:05:03,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:05:03,426 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:05:03,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:05:03,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:05:17,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '504#(and (not (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) (mod |ULTIMATE.start_main_~n~0#1| 4294967296))) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (or (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616)) (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:05:17,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:05:17,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 13:05:17,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-12-14 13:05:17,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815952073] [2022-12-14 13:05:17,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 13:05:17,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 13:05:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:05:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 13:05:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=998, Unknown=18, NotChecked=0, Total=1332 [2022-12-14 13:05:17,664 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 34 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:05:24,774 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse7 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse8 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse37 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse32 (<= .cse8 .cse37)) (.cse15 (mod (+ 7 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse19 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse43 (<= .cse7 .cse37)) (.cse6 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse45 (<= .cse10 .cse37)) (.cse17 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 10) 4294967296)) (.cse18 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod (+ 8 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse38 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 13) 4294967296)) (.cse35 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 11) 4294967296)) (.cse9 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse5 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse2 (<= .cse5 .cse37)) (.cse21 (<= .cse9 .cse37)) (.cse13 (<= .cse20 .cse37)) (.cse14 (<= .cse35 .cse37)) (.cse34 (<= .cse38 .cse37)) (.cse23 (<= .cse16 .cse37)) (.cse40 (<= .cse18 .cse37)) (.cse29 (<= .cse17 .cse37)) (.cse11 (not .cse45)) (.cse26 (<= .cse6 .cse37)) (.cse30 (not .cse43)) (.cse1 (mod (div (mod (+ (* .cse37 .cse37) .cse37) 18446744073709551616) 2) 18446744073709551616)) (.cse4 (<= .cse19 .cse37)) (.cse25 (<= .cse15 .cse37)) (.cse3 (not .cse32))) (and (let ((.cse0 (mod (+ .cse5 .cse6 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9 .cse10) 18446744073709551616))) (or (= 0 .cse0) (= .cse1 .cse0) (not .cse2) .cse3 .cse4)) (let ((.cse12 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse17 .cse18 .cse9 .cse19 .cse20 .cse10) 18446744073709551616))) (or .cse11 (= .cse12 .cse1) (not .cse13) (= .cse12 0) .cse14)) (let ((.cse22 (mod (+ .cse6 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9 .cse10) 18446744073709551616))) (or (not .cse21) .cse2 (= .cse22 .cse1) .cse3 (= .cse22 0))) (let ((.cse24 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9 .cse19 .cse10) 18446744073709551616))) (or .cse23 (= .cse24 0) (= .cse24 .cse1) .cse3 (not .cse25))) (let ((.cse27 (mod (+ .cse6 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse10) 18446744073709551616))) (or .cse11 (not .cse26) .cse21 (= .cse27 0) (= .cse27 .cse1))) (let ((.cse28 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse17 .cse18 .cse9 .cse19 .cse10) 18446744073709551616))) (or (= .cse28 0) .cse13 (not .cse29) (= .cse28 .cse1) .cse30)) (let ((.cse31 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse31 0) (= .cse31 .cse1) .cse32)) (let ((.cse33 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse17 .cse35 .cse18 .cse9 .cse19 .cse20 .cse10) 18446744073709551616))) (or (not .cse14) (= .cse33 0) .cse34 .cse3 (= .cse33 .cse1))) (let ((.cse36 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse38 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse17 .cse35 .cse18 .cse9 .cse19 .cse20 .cse10) 18446744073709551616))) (or (= .cse36 0) (= .cse36 .cse1) (<= (mod (+ 14 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) .cse37) .cse3 (not .cse34))) (let ((.cse39 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse9 .cse19 .cse10) 18446744073709551616))) (or (= .cse39 .cse1) .cse40 (= .cse39 0) .cse3 (not .cse23))) (let ((.cse41 (mod (+ .cse5 .cse15 .cse6 .cse7 .cse8 .cse16 |c_ULTIMATE.start_main_~sn~0#1| .cse18 .cse9 .cse19 .cse10) 18446744073709551616))) (or (not .cse40) (= .cse41 .cse1) .cse29 .cse3 (= .cse41 0))) (let ((.cse42 (mod (+ .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse1 .cse42) .cse43 .cse3 (= .cse42 0))) (let ((.cse44 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse10) 18446744073709551616))) (or .cse11 (= .cse44 0) .cse26 .cse30 (= .cse1 .cse44))) (let ((.cse46 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or .cse45 (= .cse46 0) .cse3 .cse30 (= .cse1 .cse46))) (let ((.cse47 (mod (+ .cse5 .cse6 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9 .cse19 .cse10) 18446744073709551616))) (or (= .cse47 .cse1) (not .cse4) .cse25 (= .cse47 0) .cse3)))))) is different from false [2022-12-14 13:09:42,991 WARN L233 SmtUtils]: Spent 4.14m on a formula simplification that was a NOOP. DAG size: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:09:45,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:09:47,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 13:13:27,761 WARN L233 SmtUtils]: Spent 3.39m on a formula simplification that was a NOOP. DAG size: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)