./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:57:47,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:57:47,204 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:57:47,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:57:47,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:57:47,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:57:47,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:57:47,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:57:47,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:57:47,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:57:47,267 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:57:47,269 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:57:47,270 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:57:47,270 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:57:47,271 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:57:47,271 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:57:47,271 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:57:47,272 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:57:47,272 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:57:47,276 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:57:47,277 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:57:47,278 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:57:47,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:57:47,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:57:47,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:57:47,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:57:47,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:57:47,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:57:47,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:57:47,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:57:47,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:57:47,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:57:47,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:57:47,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:57:47,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:57:47,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:57:47,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:57:47,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:57:47,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:57:47,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:57:47,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:57:47,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:57:47,288 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:57:47,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:57:47,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:57:47,289 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:57:47,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:57:47,290 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 [2024-11-09 04:57:47,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:57:47,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:57:47,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:57:47,697 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:57:47,699 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:57:47,700 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c Unable to find full path for "g++" [2024-11-09 04:57:49,876 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:57:50,060 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:57:50,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2024-11-09 04:57:50,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/data/375cc9a9e/97b660405ff04077944cf57b06c26eed/FLAGe8683d206 [2024-11-09 04:57:50,084 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/data/375cc9a9e/97b660405ff04077944cf57b06c26eed [2024-11-09 04:57:50,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:57:50,089 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:57:50,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:57:50,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:57:50,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:57:50,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de63186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50, skipping insertion in model container [2024-11-09 04:57:50,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:57:50,309 WARN L250 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_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2024-11-09 04:57:50,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:57:50,335 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:57:50,348 WARN L250 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_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2024-11-09 04:57:50,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:57:50,372 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:57:50,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50 WrapperNode [2024-11-09 04:57:50,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:57:50,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:57:50,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:57:50,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:57:50,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,409 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2024-11-09 04:57:50,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:57:50,411 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:57:50,411 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:57:50,411 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:57:50,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,422 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,422 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:57:50,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:57:50,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:57:50,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:57:50,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (1/1) ... [2024-11-09 04:57:50,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:57:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:50,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:57:50,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:57:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:57:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:57:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:57:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:57:50,619 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:57:50,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:57:50,835 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 04:57:50,835 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:57:50,914 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:57:50,914 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:57:50,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:57:50 BoogieIcfgContainer [2024-11-09 04:57:50,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:57:50,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:57:50,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:57:50,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:57:50,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:57:50" (1/3) ... [2024-11-09 04:57:50,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b19fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:57:50, skipping insertion in model container [2024-11-09 04:57:50,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:57:50" (2/3) ... [2024-11-09 04:57:50,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b19fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:57:50, skipping insertion in model container [2024-11-09 04:57:50,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:57:50" (3/3) ... [2024-11-09 04:57:50,933 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2024-11-09 04:57:50,956 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:57:50,958 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:57:51,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:57:51,041 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@50d02219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:57:51,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:57:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) 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) [2024-11-09 04:57:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 04:57:51,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:51,056 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 04:57:51,057 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:51,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:51,064 INFO L85 PathProgramCache]: Analyzing trace with hash 63417192, now seen corresponding path program 1 times [2024-11-09 04:57:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677959698] [2024-11-09 04:57:51,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:51,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:51,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:51,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677959698] [2024-11-09 04:57:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677959698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:57:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:57:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91556890] [2024-11-09 04:57:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:51,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:57:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:57:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:57:51,630 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:57:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:51,716 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-09 04:57:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:57:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 04:57:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:51,731 INFO L225 Difference]: With dead ends: 17 [2024-11-09 04:57:51,732 INFO L226 Difference]: Without dead ends: 9 [2024-11-09 04:57:51,735 INFO L431 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 [2024-11-09 04:57:51,740 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:51,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:57:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-09 04:57:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-09 04:57:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2024-11-09 04:57:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-09 04:57:51,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2024-11-09 04:57:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:51,784 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-09 04:57:51,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:57:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-09 04:57:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:57:51,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:51,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:57:51,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:57:51,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:51,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash 430965195, now seen corresponding path program 1 times [2024-11-09 04:57:51,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549699686] [2024-11-09 04:57:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:52,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:52,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:52,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549699686] [2024-11-09 04:57:52,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549699686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:57:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508118334] [2024-11-09 04:57:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:52,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:52,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:52,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:57:52,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:57:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:52,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:57:52,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:52,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:52,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508118334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:52,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094223394] [2024-11-09 04:57:52,583 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:57:52,583 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:57:52,588 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:57:52,597 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:57:52,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:57:53,027 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:57:53,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '92#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~z~0#1_25| Int) (|v_ULTIMATE.start_main_~x~0#1_30| Int)) (and (not (= (mod |v_ULTIMATE.start_main_~x~0#1_30| 4294967296) (mod |v_ULTIMATE.start_main_~z~0#1_25| 4294967296))) (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_30| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~x~0#1_30|) (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_25|))))' at error location [2024-11-09 04:57:53,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:57:53,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:57:53,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 8 [2024-11-09 04:57:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866182451] [2024-11-09 04:57:53,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:57:53,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:57:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:57:53,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:57:53,244 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-11-09 04:57:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:53,349 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-09 04:57:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:57:53,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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 7 [2024-11-09 04:57:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:53,351 INFO L225 Difference]: With dead ends: 18 [2024-11-09 04:57:53,351 INFO L226 Difference]: Without dead ends: 14 [2024-11-09 04:57:53,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:57:53,354 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:53,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:57:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-09 04:57:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-09 04:57:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2024-11-09 04:57:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-11-09 04:57:53,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2024-11-09 04:57:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:53,363 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-11-09 04:57:53,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-11-09 04:57:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-11-09 04:57:53,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:57:53,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:53,365 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 04:57:53,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:57:53,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:53,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:53,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash -822773644, now seen corresponding path program 2 times [2024-11-09 04:57:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753194158] [2024-11-09 04:57:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:54,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753194158] [2024-11-09 04:57:54,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753194158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:57:54,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74135823] [2024-11-09 04:57:54,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:57:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:54,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:54,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:57:54,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:57:54,158 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 04:57:54,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:57:54,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:57:54,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:54,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:54,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74135823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:54,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [506046431] [2024-11-09 04:57:54,477 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:57:54,478 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:57:54,479 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:57:54,479 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:57:54,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:57:54,698 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:57:54,944 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '230#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_42| Int) (|v_ULTIMATE.start_main_~z~0#1_33| Int)) (and (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_42| 4294967296)) (not (= (mod |v_ULTIMATE.start_main_~z~0#1_33| 4294967296) (mod |v_ULTIMATE.start_main_~x~0#1_42| 4294967296))) (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_33|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_42|))))' at error location [2024-11-09 04:57:54,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:57:54,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:57:54,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2024-11-09 04:57:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327059323] [2024-11-09 04:57:54,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:57:54,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:57:54,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:54,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:57:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:57:54,950 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 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) [2024-11-09 04:57:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:55,390 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 04:57:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:57:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 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 13 [2024-11-09 04:57:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:55,392 INFO L225 Difference]: With dead ends: 30 [2024-11-09 04:57:55,392 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 04:57:55,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2024-11-09 04:57:55,395 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:55,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:57:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 04:57:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 04:57:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2024-11-09 04:57:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-11-09 04:57:55,410 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 13 [2024-11-09 04:57:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:55,410 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-11-09 04:57:55,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 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) [2024-11-09 04:57:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-11-09 04:57:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:57:55,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:55,412 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 04:57:55,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:55,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:55,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:55,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1760866938, now seen corresponding path program 3 times [2024-11-09 04:57:55,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:57:55,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64818576] [2024-11-09 04:57:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:55,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:57:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:56,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:57:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64818576] [2024-11-09 04:57:56,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64818576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:57:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309460917] [2024-11-09 04:57:56,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:57:56,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:57:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:57:56,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:57:56,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:57:56,408 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:57:56,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:57:56,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:57:56,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:56,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:57:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309460917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575214404] [2024-11-09 04:57:57,381 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:57:57,382 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:57:57,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:57:57,383 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:57:57,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:57:57,507 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:57:57,875 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '500#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~z~0#1_47| Int) (|v_ULTIMATE.start_main_~x~0#1_66| Int)) (and (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_47|) (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_66| 4294967296)) (not (= (mod |v_ULTIMATE.start_main_~x~0#1_66| 4294967296) (mod |v_ULTIMATE.start_main_~z~0#1_47| 4294967296))) (<= 0 |v_ULTIMATE.start_main_~x~0#1_66|))))' at error location [2024-11-09 04:57:57,875 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:57:57,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:57:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-11-09 04:57:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886407599] [2024-11-09 04:57:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:57:57,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-09 04:57:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:57:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-09 04:57:57,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 04:57:57,882 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 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) [2024-11-09 04:58:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:01,076 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-09 04:58:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 04:58:01,077 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 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 25 [2024-11-09 04:58:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:01,078 INFO L225 Difference]: With dead ends: 54 [2024-11-09 04:58:01,078 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 04:58:01,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=706, Invalid=1744, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 04:58:01,083 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:01,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:58:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 04:58:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 04:58:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:58:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2024-11-09 04:58:01,112 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2024-11-09 04:58:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:01,113 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2024-11-09 04:58:01,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 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) [2024-11-09 04:58:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2024-11-09 04:58:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 04:58:01,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:01,114 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 04:58:01,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:58:01,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:01,319 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:01,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1171019434, now seen corresponding path program 4 times [2024-11-09 04:58:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:58:01,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124615443] [2024-11-09 04:58:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:58:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:58:03,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:58:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124615443] [2024-11-09 04:58:03,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124615443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:58:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963506474] [2024-11-09 04:58:03,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:58:03,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:03,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:58:03,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:58:03,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:58:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:03,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 04:58:03,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:58:04,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:58:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:58:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963506474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:58:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584354581] [2024-11-09 04:58:06,125 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:58:06,126 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:58:06,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:58:06,126 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:58:06,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:58:06,286 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:58:06,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1034#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_114| Int) (|v_ULTIMATE.start_main_~z~0#1_73| Int)) (and (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_73|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_114|) (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_114| 4294967296)) (not (= (mod |v_ULTIMATE.start_main_~z~0#1_73| 4294967296) (mod |v_ULTIMATE.start_main_~x~0#1_114| 4294967296))))))' at error location [2024-11-09 04:58:06,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:58:06,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:58:06,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 70 [2024-11-09 04:58:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137253881] [2024-11-09 04:58:06,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:58:06,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-09 04:58:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:58:06,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-09 04:58:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1280, Invalid=4420, Unknown=0, NotChecked=0, Total=5700 [2024-11-09 04:58:06,834 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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) [2024-11-09 04:58:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:45,175 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2024-11-09 04:58:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 04:58:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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 49 [2024-11-09 04:58:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:45,178 INFO L225 Difference]: With dead ends: 102 [2024-11-09 04:58:45,178 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 04:58:45,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=2842, Invalid=6664, Unknown=0, NotChecked=0, Total=9506 [2024-11-09 04:58:45,184 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:45,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 58 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 04:58:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 04:58:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 04:58:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 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) [2024-11-09 04:58:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2024-11-09 04:58:45,228 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 49 [2024-11-09 04:58:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:45,229 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2024-11-09 04:58:45,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.971830985915493) internal successors, (140), 70 states have internal predecessors, (140), 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) [2024-11-09 04:58:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2024-11-09 04:58:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 04:58:45,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:45,233 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 04:58:45,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:58:45,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:45,434 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:45,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:45,434 INFO L85 PathProgramCache]: Analyzing trace with hash -644750094, now seen corresponding path program 5 times [2024-11-09 04:58:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:58:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106795731] [2024-11-09 04:58:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:58:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:58:50,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:58:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106795731] [2024-11-09 04:58:50,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106795731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:58:50,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453139119] [2024-11-09 04:58:50,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:58:50,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:58:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:58:50,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:58:50,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:58:59,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 04:58:59,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:58:59,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-09 04:58:59,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:02,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:59:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453139119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:59:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201275939] [2024-11-09 04:59:09,186 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 04:59:09,186 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:59:09,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:59:09,186 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:59:09,187 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:59:09,271 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:59:10,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2096#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_210| Int) (|v_ULTIMATE.start_main_~z~0#1_123| Int)) (and (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_123|) (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_210| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~x~0#1_210|) (not (= (mod |v_ULTIMATE.start_main_~x~0#1_210| 4294967296) (mod |v_ULTIMATE.start_main_~z~0#1_123| 4294967296))))))' at error location [2024-11-09 04:59:10,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:59:10,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:59:10,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 142 [2024-11-09 04:59:10,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007384235] [2024-11-09 04:59:10,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:59:10,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-09 04:59:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-09 04:59:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4856, Invalid=16900, Unknown=0, NotChecked=0, Total=21756 [2024-11-09 04:59:10,146 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 143 states, 143 states have (on average 1.986013986013986) internal successors, (284), 142 states have internal predecessors, (284), 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) [2024-11-09 04:59:47,238 WARN L286 SmtUtils]: Spent 18.57s on a formula simplification. DAG size of input: 191 DAG size of output: 238 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:00:29,623 WARN L286 SmtUtils]: Spent 27.67s on a formula simplification. DAG size of input: 187 DAG size of output: 233 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:01:07,426 WARN L286 SmtUtils]: Spent 20.74s on a formula simplification. DAG size of input: 183 DAG size of output: 228 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:01:48,356 WARN L286 SmtUtils]: Spent 21.83s on a formula simplification. DAG size of input: 179 DAG size of output: 223 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:02:27,108 WARN L286 SmtUtils]: Spent 20.20s on a formula simplification. DAG size of input: 175 DAG size of output: 218 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:02:59,820 WARN L286 SmtUtils]: Spent 18.77s on a formula simplification. DAG size of input: 171 DAG size of output: 213 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:03:26,763 WARN L286 SmtUtils]: Spent 13.31s on a formula simplification. DAG size of input: 167 DAG size of output: 208 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:03:52,182 WARN L286 SmtUtils]: Spent 10.36s on a formula simplification. DAG size of input: 163 DAG size of output: 203 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:04:14,088 WARN L286 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 159 DAG size of output: 198 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:04:35,206 WARN L286 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 155 DAG size of output: 193 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:05:01,559 WARN L286 SmtUtils]: Spent 11.43s on a formula simplification. DAG size of input: 151 DAG size of output: 188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:05:24,407 WARN L286 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 147 DAG size of output: 183 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:05:44,983 WARN L286 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 143 DAG size of output: 178 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:06:07,749 WARN L286 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 139 DAG size of output: 173 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:06:23,687 WARN L286 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 135 DAG size of output: 168 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:06:41,206 WARN L286 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 131 DAG size of output: 163 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:06:55,920 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 127 DAG size of output: 158 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:09:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:10,291 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2024-11-09 05:09:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-09 05:09:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.986013986013986) internal successors, (284), 142 states have internal predecessors, (284), 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 97 [2024-11-09 05:09:10,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:10,293 INFO L225 Difference]: With dead ends: 198 [2024-11-09 05:09:10,293 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 05:09:10,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11455 ImplicationChecksByTransitivity, 599.4s TimeCoverageRelationStatistics Valid=11420, Invalid=26008, Unknown=14, NotChecked=0, Total=37442 [2024-11-09 05:09:10,303 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 6294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 6296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:10,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 104 Invalid, 6296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6294 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-09 05:09:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 05:09:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-09 05:09:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 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) [2024-11-09 05:09:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2024-11-09 05:09:10,407 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 97 [2024-11-09 05:09:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:10,408 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2024-11-09 05:09:10,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.986013986013986) internal successors, (284), 142 states have internal predecessors, (284), 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) [2024-11-09 05:09:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2024-11-09 05:09:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 05:09:10,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:10,422 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2024-11-09 05:09:10,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 05:09:10,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:10,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:10,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1013255806, now seen corresponding path program 6 times [2024-11-09 05:09:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697987781] [2024-11-09 05:09:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:24,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697987781] [2024-11-09 05:09:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697987781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264031962] [2024-11-09 05:09:24,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:09:24,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:24,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:24,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:24,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3c18df-a34b-48a9-92f7-59bf9eabeef0/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:09:25,403 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:09:25,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:09:25,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 193 conjuncts are in the unsatisfiable core [2024-11-09 05:09:25,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:09:38,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:10:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264031962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929958082] [2024-11-09 05:10:01,915 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 05:10:01,915 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:01,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:01,915 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:01,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:01,999 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:03,672 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4214#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~x~0#1_402| Int) (|v_ULTIMATE.start_main_~z~0#1_221| Int)) (and (<= 10000000 (mod |v_ULTIMATE.start_main_~x~0#1_402| 4294967296)) (<= 5000000 |v_ULTIMATE.start_main_~z~0#1_221|) (not (= (mod |v_ULTIMATE.start_main_~x~0#1_402| 4294967296) (mod |v_ULTIMATE.start_main_~z~0#1_221| 4294967296))) (<= 0 |v_ULTIMATE.start_main_~x~0#1_402|))))' at error location [2024-11-09 05:10:03,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:03,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:10:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 286 [2024-11-09 05:10:03,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374688072] [2024-11-09 05:10:03,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:03,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2024-11-09 05:10:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2024-11-09 05:10:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18920, Invalid=66052, Unknown=0, NotChecked=0, Total=84972 [2024-11-09 05:10:03,690 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 287 states, 287 states have (on average 1.9930313588850175) internal successors, (572), 286 states have internal predecessors, (572), 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)