./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/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_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/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_4d431137-9d6a-4e2f-9577-85b9a5db7424/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 ae698f02be6e3657db0e7ca3e62c4cfb121d43a876624ed4d21d19b033e0c02e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:03:32,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:03:32,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:03:32,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:03:32,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:03:32,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:03:32,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:03:32,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:03:32,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:03:32,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:03:32,832 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:03:32,833 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:03:32,833 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:03:32,834 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:03:32,834 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:03:32,834 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:03:32,835 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:03:32,835 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:03:32,835 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:03:32,836 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:03:32,836 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:03:32,838 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:03:32,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:03:32,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:03:32,840 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:03:32,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:03:32,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:03:32,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:03:32,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:03:32,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:03:32,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:03:32,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:03:32,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:03:32,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:03:32,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:03:32,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:03:32,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:03:32,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:03:32,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:03:32,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:03:32,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:03:32,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:03:32,855 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:03:32,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:03:32,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:03:32,855 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:03:32,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:03:32,856 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_4d431137-9d6a-4e2f-9577-85b9a5db7424/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae698f02be6e3657db0e7ca3e62c4cfb121d43a876624ed4d21d19b033e0c02e [2024-11-09 05:03:33,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:03:33,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:03:33,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:03:33,205 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:03:33,205 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:03:33,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-multidimensional/diff-3-n-u.c Unable to find full path for "g++" [2024-11-09 05:03:35,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:03:35,662 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:03:35,664 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c [2024-11-09 05:03:35,676 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/data/eb9f4b915/0bec7b516e5042c48506a7d453d8bfd5/FLAG3e2f48b3c [2024-11-09 05:03:35,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/data/eb9f4b915/0bec7b516e5042c48506a7d453d8bfd5 [2024-11-09 05:03:35,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:03:35,699 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:03:35,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:03:35,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:03:35,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:03:35,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:03:35" (1/1) ... [2024-11-09 05:03:35,713 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588a0198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:35, skipping insertion in model container [2024-11-09 05:03:35,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:03:35" (1/1) ... [2024-11-09 05:03:35,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:03:35,994 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_4d431137-9d6a-4e2f-9577-85b9a5db7424/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c[322,335] [2024-11-09 05:03:36,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:03:36,055 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:03:36,069 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_4d431137-9d6a-4e2f-9577-85b9a5db7424/sv-benchmarks/c/array-multidimensional/diff-3-n-u.c[322,335] [2024-11-09 05:03:36,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:03:36,115 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:03:36,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36 WrapperNode [2024-11-09 05:03:36,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:03:36,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:03:36,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:03:36,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:03:36,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,162 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2024-11-09 05:03:36,163 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:03:36,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:03:36,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:03:36,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:03:36,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:03:36,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:03:36,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:03:36,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:03:36,218 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (1/1) ... [2024-11-09 05:03:36,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:03:36,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:36,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:03:36,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:03:36,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:03:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:03:36,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:03:36,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:03:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:03:36,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:03:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:03:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:03:36,378 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:03:36,381 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:03:36,684 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-11-09 05:03:36,685 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:03:36,725 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:03:36,725 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:03:36,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:36 BoogieIcfgContainer [2024-11-09 05:03:36,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:03:36,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:03:36,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:03:36,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:03:36,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:03:35" (1/3) ... [2024-11-09 05:03:36,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5564e7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:36, skipping insertion in model container [2024-11-09 05:03:36,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:03:36" (2/3) ... [2024-11-09 05:03:36,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5564e7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:03:36, skipping insertion in model container [2024-11-09 05:03:36,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:03:36" (3/3) ... [2024-11-09 05:03:36,738 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-3-n-u.c [2024-11-09 05:03:36,795 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:03:36,796 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:03:36,881 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:03:36,889 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;@72b93279, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:03:36,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:03:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 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 05:03:36,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:03:36,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:36,908 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:36,909 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:36,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2116172156, now seen corresponding path program 1 times [2024-11-09 05:03:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:36,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503413843] [2024-11-09 05:03:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:37,328 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 05:03:37,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:37,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503413843] [2024-11-09 05:03:37,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503413843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:37,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:37,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:03:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157404338] [2024-11-09 05:03:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:03:37,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:03:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:03:37,378 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:03:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:37,486 INFO L93 Difference]: Finished difference Result 65 states and 101 transitions. [2024-11-09 05:03:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:03:37,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:03:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:37,500 INFO L225 Difference]: With dead ends: 65 [2024-11-09 05:03:37,500 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 05:03:37,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:03:37,510 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:37,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:03:37,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 05:03:37,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-11-09 05:03:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.53125) internal successors, (49), 32 states have internal predecessors, (49), 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 05:03:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2024-11-09 05:03:37,559 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 13 [2024-11-09 05:03:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:37,560 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2024-11-09 05:03:37,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:03:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2024-11-09 05:03:37,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:03:37,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:37,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:37,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:03:37,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:37,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash 93590371, now seen corresponding path program 1 times [2024-11-09 05:03:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186950475] [2024-11-09 05:03:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:03:37,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186950475] [2024-11-09 05:03:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186950475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:37,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389657477] [2024-11-09 05:03:37,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:37,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:03:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:03:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:37,731 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 05:03:37,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:37,876 INFO L93 Difference]: Finished difference Result 82 states and 126 transitions. [2024-11-09 05:03:37,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:03:37,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2024-11-09 05:03:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:37,878 INFO L225 Difference]: With dead ends: 82 [2024-11-09 05:03:37,878 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 05:03:37,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:37,882 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 67 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:37,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:03:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 05:03:37,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2024-11-09 05:03:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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 05:03:37,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2024-11-09 05:03:37,897 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2024-11-09 05:03:37,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:37,897 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2024-11-09 05:03:37,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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 05:03:37,898 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2024-11-09 05:03:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:03:37,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:37,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:37,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:03:37,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:37,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1955923370, now seen corresponding path program 1 times [2024-11-09 05:03:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211769526] [2024-11-09 05:03:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:37,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:03:38,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211769526] [2024-11-09 05:03:38,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211769526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:38,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:38,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:38,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453061166] [2024-11-09 05:03:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:38,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:03:38,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:03:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:38,113 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 05:03:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:38,242 INFO L93 Difference]: Finished difference Result 85 states and 123 transitions. [2024-11-09 05:03:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:03:38,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2024-11-09 05:03:38,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:38,244 INFO L225 Difference]: With dead ends: 85 [2024-11-09 05:03:38,244 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 05:03:38,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:38,246 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 59 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:38,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 63 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:03:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 05:03:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-11-09 05:03:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 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 05:03:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-11-09 05:03:38,256 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 21 [2024-11-09 05:03:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:38,257 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-11-09 05:03:38,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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 05:03:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-11-09 05:03:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 05:03:38,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:38,259 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:38,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:03:38,259 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:38,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:38,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1940160111, now seen corresponding path program 1 times [2024-11-09 05:03:38,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:38,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782020237] [2024-11-09 05:03:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:38,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782020237] [2024-11-09 05:03:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782020237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:03:38,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:03:38,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:03:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177736106] [2024-11-09 05:03:38,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:03:38,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:03:38,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:03:38,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:38,408 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 05:03:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:38,548 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2024-11-09 05:03:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:03:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2024-11-09 05:03:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:38,550 INFO L225 Difference]: With dead ends: 100 [2024-11-09 05:03:38,551 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 05:03:38,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:03:38,553 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 72 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:38,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:03:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 05:03:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2024-11-09 05:03:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 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 05:03:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-11-09 05:03:38,571 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 23 [2024-11-09 05:03:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:38,571 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-11-09 05:03:38,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 05:03:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-11-09 05:03:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:03:38,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:38,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:38,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:03:38,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:38,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -246014398, now seen corresponding path program 1 times [2024-11-09 05:03:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6632622] [2024-11-09 05:03:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:38,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6632622] [2024-11-09 05:03:38,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6632622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:38,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108847710] [2024-11-09 05:03:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:38,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:38,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:38,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:38,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:03:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:38,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:03:38,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:39,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:03:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:03:39,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108847710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:03:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1318028502] [2024-11-09 05:03:39,128 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 05:03:39,128 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:03:39,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:03:39,139 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:03:39,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:03:51,907 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:03:52,403 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '913#(and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_main_~m~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (not (= (mod (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) |ULTIMATE.start_main_~#A~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) |ULTIMATE.start_main_~#C~0#1.offset|) 4294967296))))' at error location [2024-11-09 05:03:52,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:03:52,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:03:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 05:03:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764828235] [2024-11-09 05:03:52,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:03:52,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:03:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:03:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:03:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:03:52,410 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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 05:03:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:03:52,668 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2024-11-09 05:03:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:03:52,670 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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 33 [2024-11-09 05:03:52,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:03:52,670 INFO L225 Difference]: With dead ends: 118 [2024-11-09 05:03:52,673 INFO L226 Difference]: Without dead ends: 74 [2024-11-09 05:03:52,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:03:52,675 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 144 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:03:52,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 129 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:03:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-09 05:03:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2024-11-09 05:03:52,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 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 05:03:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2024-11-09 05:03:52,694 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 33 [2024-11-09 05:03:52,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:03:52,695 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2024-11-09 05:03:52,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 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 05:03:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2024-11-09 05:03:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 05:03:52,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:03:52,696 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:03:52,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:03:52,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:52,898 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:03:52,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:03:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1996472448, now seen corresponding path program 2 times [2024-11-09 05:03:52,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:03:52,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205063007] [2024-11-09 05:03:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:03:52,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:03:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:03:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 05:03:53,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:03:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205063007] [2024-11-09 05:03:53,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205063007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:03:53,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720491558] [2024-11-09 05:03:53,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:03:53,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:03:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:03:53,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:03:53,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:03:53,290 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:03:53,290 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:03:53,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:03:53,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:03:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 05:03:53,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:03:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-09 05:03:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720491558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:03:53,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193161558] [2024-11-09 05:03:53,530 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 05:03:53,530 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:03:53,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:03:53,531 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:03:53,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:03:57,020 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:03:57,222 WARN L873 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (exists ((|v_ULTIMATE.start_main_~j~0#1_182| Int)) (let ((.cse0 (<= 1 |c_ULTIMATE.start_main_~n~0#1|)) (.cse1 (<= 1 |v_ULTIMATE.start_main_~j~0#1_182|)) (.cse2 (= |v_ULTIMATE.start_main_~j~0#1_182| 0))) (and (or (and .cse0 .cse1) .cse2) (<= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_182|) (or (and (exists ((|v_ULTIMATE.start_main_~k~0#1_203| Int)) (and (or (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_203|) (<= 1 |c_ULTIMATE.start_main_~p~0#1|) (exists ((|v_#memory_int_34| (Array Int (Array Int Int)))) (= (store |v_#memory_int_34| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse6 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse3 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse6) (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|))) (.cse4 (* 4 |v_ULTIMATE.start_main_~k~0#1_203|)) (.cse5 (* .cse6 (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_182|)))) (store (select |v_#memory_int_34| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse3 (- 4) .cse4 .cse5 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_34| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~#A~0#1.offset| (- 4) .cse4 .cse5)) (select (select |v_#memory_int_34| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse3 (- 4) .cse4 .cse5))))))) |c_#memory_int|))) (= |v_ULTIMATE.start_main_~k~0#1_203| 0)) (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_203|))) .cse0 .cse1) (and (<= |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~m~0#1|) .cse2)))))) is different from true [2024-11-09 05:04:08,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1459#(and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_main_~m~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (not (= (mod (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) |ULTIMATE.start_main_~#A~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) |ULTIMATE.start_main_~#C~0#1.offset|) 4294967296))))' at error location [2024-11-09 05:04:08,288 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:04:08,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:04:08,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2024-11-09 05:04:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916523057] [2024-11-09 05:04:08,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:04:08,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:04:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:04:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:04:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=661, Unknown=12, NotChecked=54, Total=870 [2024-11-09 05:04:08,292 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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 05:04:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:04:13,193 INFO L93 Difference]: Finished difference Result 215 states and 264 transitions. [2024-11-09 05:04:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 05:04:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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 45 [2024-11-09 05:04:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:04:13,196 INFO L225 Difference]: With dead ends: 215 [2024-11-09 05:04:13,196 INFO L226 Difference]: Without dead ends: 150 [2024-11-09 05:04:13,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=529, Invalid=2195, Unknown=36, NotChecked=102, Total=2862 [2024-11-09 05:04:13,199 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 283 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:04:13,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 134 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:04:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-09 05:04:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2024-11-09 05:04:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 130 states have internal predecessors, (155), 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 05:04:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2024-11-09 05:04:13,226 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 45 [2024-11-09 05:04:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:04:13,227 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2024-11-09 05:04:13,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 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 05:04:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2024-11-09 05:04:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 05:04:13,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:04:13,230 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:04:13,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:04:13,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:04:13,431 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:04:13,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:04:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -934786369, now seen corresponding path program 3 times [2024-11-09 05:04:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:04:13,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289350165] [2024-11-09 05:04:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:04:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:04:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:04:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 200 proven. 25 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-09 05:04:13,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:04:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289350165] [2024-11-09 05:04:13,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289350165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:04:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398020564] [2024-11-09 05:04:13,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:04:13,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:04:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:04:13,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:04:13,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:04:41,394 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:04:41,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:04:41,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:04:41,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:04:41,584 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 208 proven. 1 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-09 05:04:41,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:04:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 208 proven. 1 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2024-11-09 05:04:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398020564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:04:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1858138672] [2024-11-09 05:04:41,714 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 05:04:41,714 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:04:41,715 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:04:41,715 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:04:41,715 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:05:04,052 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:05:05,296 WARN L873 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (exists ((|v_ULTIMATE.start_main_~j~0#1_253| Int)) (and (<= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_253|) (or (exists ((|v_ULTIMATE.start_main_~k~0#1_313| Int)) (let ((.cse0 (<= 1 |v_ULTIMATE.start_main_~j~0#1_253|)) (.cse2 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse1 (<= 1 |c_ULTIMATE.start_main_~p~0#1|)) (.cse3 (and (= |v_ULTIMATE.start_main_~k~0#1_313| 0) .cse0 .cse2))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) (or (and .cse0 .cse1 .cse2) .cse3) (or (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) .cse0 (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= (store |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse4 (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_253|) .cse7)) (.cse5 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse7) (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|))) (.cse6 (* 4 |v_ULTIMATE.start_main_~k~0#1_313|))) (store (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse4 .cse5 (- 4) .cse6 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse4 .cse5 (- 4) .cse6)) (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse4 .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| (- 4) .cse6))))))) |c_#memory_int|)) .cse1 .cse2) .cse3))))) (and (<= |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~m~0#1|) (= |v_ULTIMATE.start_main_~j~0#1_253| 0)))))) is different from true [2024-11-09 05:05:05,334 WARN L873 $PredicateComparison]: unable to prove that (or (and (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |c_ULTIMATE.start_main_~m~0#1|) (= |c_ULTIMATE.start_main_~j~0#1| 0)) (exists ((|v_ULTIMATE.start_main_~k~0#1_313| Int)) (let ((.cse6 (<= 1 |c_ULTIMATE.start_main_~n~0#1|)) (.cse7 (<= 1 |c_ULTIMATE.start_main_~j~0#1|))) (let ((.cse0 (and (= |v_ULTIMATE.start_main_~k~0#1_313| 0) .cse6 .cse7)) (.cse1 (<= 1 |c_ULTIMATE.start_main_~p~0#1|))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) (or .cse0 (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) .cse1 (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= |c_#memory_int| (store |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse5 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse2 (* .cse5 (+ (- 1) |c_ULTIMATE.start_main_~j~0#1|))) (.cse3 (* 4 |v_ULTIMATE.start_main_~k~0#1_313|)) (.cse4 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse5) |c_ULTIMATE.start_main_~i~0#1|))) (store (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse2 (- 4) .cse3 .cse4 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse2 (- 4) .cse3 .cse4)) (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse2 (- 4) .cse3 .cse4))))))))) .cse6 .cse7)) (or .cse0 (and .cse1 .cse6 .cse7))))))) is different from true [2024-11-09 05:05:05,725 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~k~0#1_313| Int)) (let ((.cse1 (<= 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse3 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (and .cse1 (= |v_ULTIMATE.start_main_~k~0#1_313| 0) .cse3)) (.cse2 (<= 1 |c_ULTIMATE.start_main_~p~0#1|))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) (or .cse0 (and .cse1 .cse2 .cse3)) (or .cse0 (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) .cse1 .cse2 (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= (store |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse4 (* |c_ULTIMATE.start_main_~j~0#1| .cse7)) (.cse5 (* 4 |v_ULTIMATE.start_main_~k~0#1_313|)) (.cse6 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse7) |c_ULTIMATE.start_main_~i~0#1|))) (store (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse4 (- 4) .cse5 .cse6 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4 (- 4) .cse5 .cse6)) (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse4 (- 4) .cse5 .cse6))))))) |c_#memory_int|)) .cse3)))))) is different from true [2024-11-09 05:05:10,144 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~i~0#1_93| Int)) (and (<= |c_ULTIMATE.start_main_~m~0#1| |v_ULTIMATE.start_main_~i~0#1_93|) (or (exists ((|v_ULTIMATE.start_main_~j~0#1_253| Int)) (and (<= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_253|) (or (and (= |v_ULTIMATE.start_main_~i~0#1_93| |c_ULTIMATE.start_main_~m~0#1|) (= |v_ULTIMATE.start_main_~j~0#1_253| 0)) (exists ((|v_ULTIMATE.start_main_~k~0#1_313| Int)) (let ((.cse0 (<= 1 |v_ULTIMATE.start_main_~j~0#1_253|)) (.cse2 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse3 (and (= |v_ULTIMATE.start_main_~k~0#1_313| 0) .cse0 .cse2)) (.cse1 (<= 1 |c_ULTIMATE.start_main_~p~0#1|))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) (or (and .cse0 .cse1 .cse2) .cse3) (or .cse3 (and (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|) (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= (store |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse4 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse7) (+ |v_ULTIMATE.start_main_~i~0#1_93| (- 1)))) (.cse5 (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_253|) .cse7)) (.cse6 (* 4 |v_ULTIMATE.start_main_~k~0#1_313|))) (store (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse4 .cse5 (- 4) .cse6 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse4 .cse5 (- 4) .cse6)) (select (select |v_#memory_int_78| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse4 .cse5 |c_ULTIMATE.start_main_~#A~0#1.offset| (- 4) .cse6))))))) |c_#memory_int|)) .cse0 .cse1 .cse2))))))))) (= |v_ULTIMATE.start_main_~i~0#1_93| 0)))) is different from true [2024-11-09 05:06:18,286 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2635#(and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (<= 1 |ULTIMATE.start_main_~m~0#1|) (exists ((|v_ULTIMATE.start_main_~i~0#1_93| Int)) (and (exists ((|v_ULTIMATE.start_main_~j~0#1_253| Int)) (and (exists ((|v_ULTIMATE.start_main_~k~0#1_313| Int)) (and (exists ((|v_#memory_int_78| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_78| |ULTIMATE.start_main_~#C~0#1.base| (store (select |v_#memory_int_78| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_253|) (* |ULTIMATE.start_main_~p~0#1| 4)) (* (+ |v_ULTIMATE.start_main_~i~0#1_93| (- 1)) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) |ULTIMATE.start_main_~#C~0#1.offset| (- 4) (* 4 |v_ULTIMATE.start_main_~k~0#1_313|)) (+ (select (select |v_#memory_int_78| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_253|) (* |ULTIMATE.start_main_~p~0#1| 4)) (* (+ |v_ULTIMATE.start_main_~i~0#1_93| (- 1)) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) |ULTIMATE.start_main_~#B~0#1.offset| (- 4) (* 4 |v_ULTIMATE.start_main_~k~0#1_313|))) (select (select |v_#memory_int_78| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_253|) (* |ULTIMATE.start_main_~p~0#1| 4)) |ULTIMATE.start_main_~#A~0#1.offset| (* (+ |v_ULTIMATE.start_main_~i~0#1_93| (- 1)) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) (- 4) (* 4 |v_ULTIMATE.start_main_~k~0#1_313|)))))))) (= |ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_313|))) (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_253|))) (<= |ULTIMATE.start_main_~m~0#1| |v_ULTIMATE.start_main_~i~0#1_93|))) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (not (= (mod (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) |ULTIMATE.start_main_~#A~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) |ULTIMATE.start_main_~#C~0#1.offset|) 4294967296))))' at error location [2024-11-09 05:06:18,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:06:18,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:06:18,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2024-11-09 05:06:18,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527889750] [2024-11-09 05:06:18,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:06:18,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:06:18,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:06:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:06:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=715, Unknown=44, NotChecked=236, Total=1122 [2024-11-09 05:06:18,290 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 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 05:06:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:06:24,805 INFO L93 Difference]: Finished difference Result 675 states and 791 transitions. [2024-11-09 05:06:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 05:06:24,806 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 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 103 [2024-11-09 05:06:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:06:24,807 INFO L225 Difference]: With dead ends: 675 [2024-11-09 05:06:24,808 INFO L226 Difference]: Without dead ends: 549 [2024-11-09 05:06:24,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 278 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=714, Invalid=2651, Unknown=73, NotChecked=468, Total=3906 [2024-11-09 05:06:24,815 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1529 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:06:24,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 79 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:06:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-09 05:06:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 463. [2024-11-09 05:06:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.121212121212121) internal successors, (518), 462 states have internal predecessors, (518), 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 05:06:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 518 transitions. [2024-11-09 05:06:24,913 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 518 transitions. Word has length 103 [2024-11-09 05:06:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:06:24,914 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 518 transitions. [2024-11-09 05:06:24,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 14 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 05:06:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 518 transitions. [2024-11-09 05:06:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2024-11-09 05:06:24,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:06:24,922 INFO L215 NwaCegarLoop]: trace histogram [96, 96, 24, 24, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:06:24,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:06:25,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:06:25,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:06:25,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:06:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2033957475, now seen corresponding path program 4 times [2024-11-09 05:06:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:06:25,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553019778] [2024-11-09 05:06:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:06:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:06:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11905 backedges. 1316 proven. 36 refuted. 0 times theorem prover too weak. 10553 trivial. 0 not checked. [2024-11-09 05:06:26,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:06:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553019778] [2024-11-09 05:06:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553019778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:06:26,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061486338] [2024-11-09 05:06:26,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:06:26,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:06:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:06:26,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:06:26,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:06:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:06:27,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:06:27,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:06:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11905 backedges. 1316 proven. 36 refuted. 0 times theorem prover too weak. 10553 trivial. 0 not checked. [2024-11-09 05:06:27,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:06:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11905 backedges. 1316 proven. 36 refuted. 0 times theorem prover too weak. 10553 trivial. 0 not checked. [2024-11-09 05:06:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061486338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:06:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298892861] [2024-11-09 05:06:28,173 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 05:06:28,173 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:06:28,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:06:28,174 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:06:28,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:06:43,902 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:06:46,601 WARN L873 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~i~0#1| 0) (exists ((|v_ULTIMATE.start_main_~j~0#1_338| Int)) (and (or (exists ((|v_ULTIMATE.start_main_~k~0#1_541| Int)) (let ((.cse0 (<= 1 |v_ULTIMATE.start_main_~j~0#1_338|)) (.cse6 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse5 (<= 1 |c_ULTIMATE.start_main_~p~0#1|)) (.cse7 (and .cse0 (= |v_ULTIMATE.start_main_~k~0#1_541| 0) .cse6))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) (or (and .cse0 (exists ((|v_#memory_int_217| (Array Int (Array Int Int)))) (= (store |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse1 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse4) (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|))) (.cse2 (* 4 |v_ULTIMATE.start_main_~k~0#1_541|)) (.cse3 (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_338|) .cse4))) (store (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse1 .cse2 .cse3 (- 4) |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse1 .cse2 .cse3 (- 4))) (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#A~0#1.offset| .cse2 .cse3 (- 4)))))))) |c_#memory_int|)) .cse5 (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) .cse6) .cse7) (or (and .cse0 .cse5 .cse6) .cse7))))) (and (= |v_ULTIMATE.start_main_~j~0#1_338| 0) (<= |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~m~0#1|))) (<= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_338|)))) is different from true [2024-11-09 05:06:46,637 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_main_~k~0#1_541| Int)) (let ((.cse5 (<= 1 |c_ULTIMATE.start_main_~n~0#1|)) (.cse6 (<= 1 |c_ULTIMATE.start_main_~j~0#1|))) (let ((.cse7 (and (= |v_ULTIMATE.start_main_~k~0#1_541| 0) .cse5 .cse6)) (.cse0 (<= 1 |c_ULTIMATE.start_main_~p~0#1|))) (and (or (and .cse0 (exists ((|v_#memory_int_217| (Array Int (Array Int Int)))) (= (store |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse1 (* 4 |v_ULTIMATE.start_main_~k~0#1_541|)) (.cse2 (* .cse4 (+ (- 1) |c_ULTIMATE.start_main_~j~0#1|))) (.cse3 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse4) |c_ULTIMATE.start_main_~i~0#1|))) (store (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse1 .cse2 (- 4) .cse3 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse1 .cse2 (- 4) .cse3)) (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse1 .cse2 (- 4) .cse3))))))) |c_#memory_int|)) (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) .cse5 .cse6) .cse7) (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) (or .cse7 (and .cse0 .cse5 .cse6)))))) (and (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |c_ULTIMATE.start_main_~m~0#1|) (= |c_ULTIMATE.start_main_~j~0#1| 0))) is different from true [2024-11-09 05:06:46,938 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~k~0#1_541| Int)) (let ((.cse1 (<= 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse3 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (and .cse1 (= |v_ULTIMATE.start_main_~k~0#1_541| 0) .cse3)) (.cse2 (<= 1 |c_ULTIMATE.start_main_~p~0#1|))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) (or .cse0 (and .cse1 .cse2 (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) .cse3 (exists ((|v_#memory_int_217| (Array Int (Array Int Int)))) (= |c_#memory_int| (store |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse4 (* 4 |v_ULTIMATE.start_main_~k~0#1_541|)) (.cse5 (* |c_ULTIMATE.start_main_~j~0#1| .cse7)) (.cse6 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse7) |c_ULTIMATE.start_main_~i~0#1|))) (store (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse4 .cse5 (- 4) .cse6 |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4 .cse5 (- 4) .cse6)) (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse4 .cse5 (- 4) .cse6))))))))))) (or .cse0 (and .cse1 .cse2 .cse3)))))) is different from true [2024-11-09 05:06:51,189 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~i~0#1_111| Int)) (and (<= |c_ULTIMATE.start_main_~m~0#1| |v_ULTIMATE.start_main_~i~0#1_111|) (or (= |v_ULTIMATE.start_main_~i~0#1_111| 0) (exists ((|v_ULTIMATE.start_main_~j~0#1_338| Int)) (and (or (exists ((|v_ULTIMATE.start_main_~k~0#1_541| Int)) (let ((.cse0 (<= 1 |v_ULTIMATE.start_main_~j~0#1_338|)) (.cse2 (<= 1 |c_ULTIMATE.start_main_~n~0#1|))) (let ((.cse1 (<= 1 |c_ULTIMATE.start_main_~p~0#1|)) (.cse3 (and .cse0 (= |v_ULTIMATE.start_main_~k~0#1_541| 0) .cse2))) (and (<= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) (or (and .cse0 .cse1 .cse2) .cse3) (or (and (exists ((|v_#memory_int_217| (Array Int (Array Int Int)))) (= (store |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~p~0#1| 4))) (let ((.cse4 (* 4 |v_ULTIMATE.start_main_~k~0#1_541|)) (.cse5 (* (* |c_ULTIMATE.start_main_~n~0#1| .cse7) (+ (- 1) |v_ULTIMATE.start_main_~i~0#1_111|))) (.cse6 (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_338|) .cse7))) (store (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#C~0#1.base|) (+ .cse4 .cse5 .cse6 (- 4) |c_ULTIMATE.start_main_~#C~0#1.offset|) (+ (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4 .cse5 .cse6 (- 4))) (select (select |v_#memory_int_217| |c_ULTIMATE.start_main_~#B~0#1.base|) (+ |c_ULTIMATE.start_main_~#B~0#1.offset| .cse4 .cse5 .cse6 (- 4)))))))) |c_#memory_int|)) .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|) .cse2) .cse3))))) (and (= |v_ULTIMATE.start_main_~j~0#1_338| 0) (= |c_ULTIMATE.start_main_~m~0#1| |v_ULTIMATE.start_main_~i~0#1_111|))) (<= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_338|)))))) is different from true [2024-11-09 05:07:59,796 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6453#(and (<= 1 |ULTIMATE.start_main_~p~0#1|) (= |ULTIMATE.start_main_~i~0#1| 0) (exists ((|v_ULTIMATE.start_main_~i~0#1_111| Int)) (and (exists ((|v_ULTIMATE.start_main_~j~0#1_338| Int)) (and (<= |ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~j~0#1_338|) (exists ((|v_ULTIMATE.start_main_~k~0#1_541| Int)) (and (exists ((|v_#memory_int_217| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_217| |ULTIMATE.start_main_~#C~0#1.base| (store (select |v_#memory_int_217| |ULTIMATE.start_main_~#C~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_338|) (* |ULTIMATE.start_main_~p~0#1| 4)) (* 4 |v_ULTIMATE.start_main_~k~0#1_541|) |ULTIMATE.start_main_~#C~0#1.offset| (* (+ (- 1) |v_ULTIMATE.start_main_~i~0#1_111|) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) (- 4)) (+ (select (select |v_#memory_int_217| |ULTIMATE.start_main_~#A~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_338|) (* |ULTIMATE.start_main_~p~0#1| 4)) (* 4 |v_ULTIMATE.start_main_~k~0#1_541|) |ULTIMATE.start_main_~#A~0#1.offset| (* (+ (- 1) |v_ULTIMATE.start_main_~i~0#1_111|) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) (- 4))) (select (select |v_#memory_int_217| |ULTIMATE.start_main_~#B~0#1.base|) (+ (* (+ (- 1) |v_ULTIMATE.start_main_~j~0#1_338|) (* |ULTIMATE.start_main_~p~0#1| 4)) (* 4 |v_ULTIMATE.start_main_~k~0#1_541|) |ULTIMATE.start_main_~#B~0#1.offset| (* (+ (- 1) |v_ULTIMATE.start_main_~i~0#1_111|) (* |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~p~0#1| 4))) (- 4)))))))) (= |ULTIMATE.start_main_~p~0#1| |v_ULTIMATE.start_main_~k~0#1_541|))))) (<= |ULTIMATE.start_main_~m~0#1| |v_ULTIMATE.start_main_~i~0#1_111|))) (<= 1 |ULTIMATE.start_main_~m~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~j~0#1| 0) (not (= (mod (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) |ULTIMATE.start_main_~#A~0#1.offset|) (select (select |#memory_int| |ULTIMATE.start_main_~#B~0#1.base|) |ULTIMATE.start_main_~#B~0#1.offset|)) 4294967296) (mod (select (select |#memory_int| |ULTIMATE.start_main_~#C~0#1.base|) |ULTIMATE.start_main_~#C~0#1.offset|) 4294967296))))' at error location [2024-11-09 05:07:59,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:07:59,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:07:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-09 05:07:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572333412] [2024-11-09 05:07:59,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:07:59,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:07:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:07:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:07:59,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1278, Unknown=40, NotChecked=324, Total=1980 [2024-11-09 05:07:59,802 INFO L87 Difference]: Start difference. First operand 463 states and 518 transitions. Second operand has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 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 05:08:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:08:00,996 INFO L93 Difference]: Finished difference Result 1382 states and 1702 transitions. [2024-11-09 05:08:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:08:00,997 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 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 353 [2024-11-09 05:08:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:08:01,003 INFO L225 Difference]: With dead ends: 1382 [2024-11-09 05:08:01,004 INFO L226 Difference]: Without dead ends: 937 [2024-11-09 05:08:01,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1022 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 77.0s TimeCoverageRelationStatistics Valid=471, Invalid=1756, Unknown=45, NotChecked=380, Total=2652 [2024-11-09 05:08:01,008 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 384 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:08:01,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 189 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:08:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2024-11-09 05:08:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 911. [2024-11-09 05:08:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.0967032967032968) internal successors, (998), 910 states have internal predecessors, (998), 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 05:08:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 998 transitions. [2024-11-09 05:08:01,133 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 998 transitions. Word has length 353 [2024-11-09 05:08:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:08:01,134 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 998 transitions. [2024-11-09 05:08:01,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.28) internal successors, (82), 24 states have internal predecessors, (82), 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 05:08:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 998 transitions. [2024-11-09 05:08:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2024-11-09 05:08:01,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:08:01,160 INFO L215 NwaCegarLoop]: trace histogram [224, 224, 56, 56, 16, 16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:08:01,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:08:01,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:08:01,364 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:08:01,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:08:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1109425789, now seen corresponding path program 5 times [2024-11-09 05:08:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:08:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536947412] [2024-11-09 05:08:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:08:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:08:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:08:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 57441 backedges. 6356 proven. 196 refuted. 0 times theorem prover too weak. 50889 trivial. 0 not checked. [2024-11-09 05:08:06,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:08:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536947412] [2024-11-09 05:08:06,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536947412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:08:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077869439] [2024-11-09 05:08:06,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:08:06,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:08:06,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:08:06,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:08:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d431137-9d6a-4e2f-9577-85b9a5db7424/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:08:07,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:08:07,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:08:07,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:08:07,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:08:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 57441 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57440 trivial. 0 not checked. [2024-11-09 05:08:09,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:08:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 57441 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57440 trivial. 0 not checked. [2024-11-09 05:08:12,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077869439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:08:12,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2064663815] [2024-11-09 05:08:12,245 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2024-11-09 05:08:12,245 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:08:12,245 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:08:12,246 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:08:12,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs