./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max40-1.i --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_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/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_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max40-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/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_c6cfecc6-1481-4229-be6d-529844d4cac2/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 a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:29:27,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:29:27,984 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:29:27,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:29:27,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:29:28,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:29:28,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:29:28,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:29:28,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:29:28,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:29:28,038 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:29:28,039 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:29:28,039 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:29:28,040 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:29:28,040 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:29:28,041 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:29:28,041 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:29:28,042 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:29:28,042 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:29:28,042 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:29:28,043 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:29:28,048 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:29:28,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:29:28,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:29:28,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:29:28,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:29:28,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:29:28,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:29:28,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:29:28,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:29:28,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:29:28,078 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:29:28,078 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:29:28,078 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:29:28,079 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:29:28,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:29:28,079 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:29:28,079 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:29:28,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:28,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:29:28,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:29:28,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:29:28,082 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:29:28,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:29:28,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:29:28,084 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:29:28,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:29:28,084 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_c6cfecc6-1481-4229-be6d-529844d4cac2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 [2024-11-09 04:29:28,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:29:28,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:29:28,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:29:28,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:29:28,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:29:28,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/reducercommutativity/max40-1.i Unable to find full path for "g++" [2024-11-09 04:29:30,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:29:30,598 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:29:30,598 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/sv-benchmarks/c/reducercommutativity/max40-1.i [2024-11-09 04:29:30,607 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/data/9376a9c63/de8388061e114d808a73d65348496163/FLAG9653966d0 [2024-11-09 04:29:30,621 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/data/9376a9c63/de8388061e114d808a73d65348496163 [2024-11-09 04:29:30,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:29:30,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:29:30,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:30,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:29:30,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:29:30,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:30" (1/1) ... [2024-11-09 04:29:30,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c07413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:30, skipping insertion in model container [2024-11-09 04:29:30,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:30" (1/1) ... [2024-11-09 04:29:30,663 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:29:30,953 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_c6cfecc6-1481-4229-be6d-529844d4cac2/sv-benchmarks/c/reducercommutativity/max40-1.i[1290,1303] [2024-11-09 04:29:30,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:30,974 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:29:30,998 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_c6cfecc6-1481-4229-be6d-529844d4cac2/sv-benchmarks/c/reducercommutativity/max40-1.i[1290,1303] [2024-11-09 04:29:30,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:31,020 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:29:31,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31 WrapperNode [2024-11-09 04:29:31,020 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:31,021 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:29:31,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:29:31,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,065 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-09 04:29:31,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:31,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:29:31,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:29:31,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,095 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:29:31,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:29:31,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:29:31,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:29:31,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (1/1) ... [2024-11-09 04:29:31,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:31,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:29:31,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:29:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:29:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure max [2024-11-09 04:29:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2024-11-09 04:29:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:29:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:29:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:29:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:29:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:29:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:29:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:29:31,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:29:31,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:29:31,464 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-09 04:29:31,464 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:29:31,526 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:29:31,526 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:29:31,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:31 BoogieIcfgContainer [2024-11-09 04:29:31,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:29:31,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:29:31,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:29:31,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:29:31,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:29:30" (1/3) ... [2024-11-09 04:29:31,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e98dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:31, skipping insertion in model container [2024-11-09 04:29:31,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:31" (2/3) ... [2024-11-09 04:29:31,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e98dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:29:31, skipping insertion in model container [2024-11-09 04:29:31,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:29:31" (3/3) ... [2024-11-09 04:29:31,543 INFO L112 eAbstractionObserver]: Analyzing ICFG max40-1.i [2024-11-09 04:29:31,576 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:29:31,576 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:29:31,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:29:31,660 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;@7d059f45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:29:31,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:29:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:29:31,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:31,679 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:31,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:31,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1016110697, now seen corresponding path program 1 times [2024-11-09 04:29:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920317871] [2024-11-09 04:29:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:32,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:32,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920317871] [2024-11-09 04:29:32,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920317871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:32,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:29:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:29:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147658298] [2024-11-09 04:29:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:32,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:29:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:32,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:29:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:29:32,142 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:32,203 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-11-09 04:29:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:29:32,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-09 04:29:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:32,214 INFO L225 Difference]: With dead ends: 45 [2024-11-09 04:29:32,214 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 04:29:32,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:29:32,222 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:32,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:29:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 04:29:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 04:29:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-09 04:29:32,266 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 25 [2024-11-09 04:29:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:32,266 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-09 04:29:32,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 04:29:32,267 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-09 04:29:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 04:29:32,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:32,269 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:32,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:29:32,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:32,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:32,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1799420700, now seen corresponding path program 1 times [2024-11-09 04:29:32,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:32,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879215346] [2024-11-09 04:29:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:32,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:32,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879215346] [2024-11-09 04:29:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879215346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827796827] [2024-11-09 04:29:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:32,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:32,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:29:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:32,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:29:32,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 04:29:32,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827796827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:32,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:32,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 04:29:32,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137798666] [2024-11-09 04:29:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:32,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:29:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:29:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:32,714 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:32,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:32,750 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2024-11-09 04:29:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:29:32,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-09 04:29:32,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:32,752 INFO L225 Difference]: With dead ends: 41 [2024-11-09 04:29:32,752 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 04:29:32,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:32,754 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:32,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:29:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 04:29:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 04:29:32,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-09 04:29:32,761 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 27 [2024-11-09 04:29:32,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:32,762 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-09 04:29:32,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-09 04:29:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 04:29:32,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:32,763 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:32,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:29:32,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:32,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:32,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1989742077, now seen corresponding path program 1 times [2024-11-09 04:29:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83092119] [2024-11-09 04:29:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 04:29:33,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83092119] [2024-11-09 04:29:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83092119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901378582] [2024-11-09 04:29:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:33,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:33,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:33,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:29:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:29:33,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 04:29:33,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:29:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901378582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:29:33,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:29:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 04:29:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765691598] [2024-11-09 04:29:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:29:33,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:29:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:29:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:29:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:33,228 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:33,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:29:33,255 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-11-09 04:29:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:29:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-09 04:29:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:29:33,257 INFO L225 Difference]: With dead ends: 40 [2024-11-09 04:29:33,257 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 04:29:33,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:29:33,259 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:29:33,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:29:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 04:29:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 04:29:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:29:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-09 04:29:33,266 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 33 [2024-11-09 04:29:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:29:33,267 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-09 04:29:33,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:29:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-09 04:29:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 04:29:33,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:29:33,270 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:29:33,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 04:29:33,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:33,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:29:33,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:29:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -910330136, now seen corresponding path program 1 times [2024-11-09 04:29:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:29:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186501505] [2024-11-09 04:29:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:29:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 04:29:33,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:29:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186501505] [2024-11-09 04:29:33,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186501505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:29:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066806706] [2024-11-09 04:29:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:29:33,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:29:33,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:33,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:29:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:29:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:29:33,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:29:33,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:29:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 04:29:33,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:29:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 04:29:33,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066806706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:29:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976260674] [2024-11-09 04:29:33,862 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:29:33,863 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:29:33,866 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:29:33,872 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:29:33,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:29:35,709 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:29:35,821 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:18,080 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '705#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_14| Int) (|v_ULTIMATE.start_main_~ret~1#1_14| Int) (|v_ULTIMATE.start_main_~ret5~0#1_14| Int)) (and (<= |v_ULTIMATE.start_main_~ret5~0#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_14| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_14| |v_ULTIMATE.start_main_~ret5~0#1_14|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_14| |v_ULTIMATE.start_main_~ret~1#1_14|))) (or (and (exists ((v_max_~ret~0_34 Int) (v_max_~x.offset_BEFORE_RETURN_5 Int) (v_max_~x.base_BEFORE_RETURN_5 Int)) (and (or (= (mod v_max_~ret~0_34 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)) (= (mod v_max_~ret~0_34 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_14|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_5) (+ 156 v_max_~x.offset_BEFORE_RETURN_5)) v_max_~ret~0_34))) (exists ((|v_#memory_int_31| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_31| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_31| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156)))))) (and (exists ((v_max_~x.offset_BEFORE_RETURN_6 Int) (v_max_~ret~0_34 Int) (v_max_~x.base_BEFORE_RETURN_6 Int)) (and (or (= (mod v_max_~ret~0_34 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296)) (= (mod v_max_~ret~0_34 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_14|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_6) (+ 156 v_max_~x.offset_BEFORE_RETURN_6)) v_max_~ret~0_34))) (exists ((|v_#memory_int_31| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_31| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_31| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_14| 2147483648)))))' at error location [2024-11-09 04:30:18,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:18,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-09 04:30:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85814568] [2024-11-09 04:30:18,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:18,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=403, Unknown=31, NotChecked=0, Total=506 [2024-11-09 04:30:18,087 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:30:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:18,149 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-11-09 04:30:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:18,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 35 [2024-11-09 04:30:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:18,151 INFO L225 Difference]: With dead ends: 54 [2024-11-09 04:30:18,151 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 04:30:18,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=72, Invalid=403, Unknown=31, NotChecked=0, Total=506 [2024-11-09 04:30:18,152 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:18,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:18,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 04:30:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 04:30:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:30:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-09 04:30:18,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 35 [2024-11-09 04:30:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:18,167 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-09 04:30:18,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:30:18,167 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-09 04:30:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 04:30:18,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:18,169 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:18,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:30:18,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:18,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:18,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:18,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1355494647, now seen corresponding path program 2 times [2024-11-09 04:30:18,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:18,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512317601] [2024-11-09 04:30:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:18,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 04:30:18,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512317601] [2024-11-09 04:30:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512317601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:18,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204002353] [2024-11-09 04:30:18,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:30:18,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:18,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:18,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:18,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:30:18,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 04:30:18,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:30:18,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:30:18,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 04:30:18,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-09 04:30:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204002353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1229213078] [2024-11-09 04:30:18,675 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:30:18,675 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:18,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:18,676 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:18,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:19,561 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:30:19,621 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:30:50,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1091#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_15| Int) (|v_ULTIMATE.start_main_~ret~1#1_15| Int) (|v_ULTIMATE.start_main_~ret5~0#1_16| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_15| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_15| 2147483648)) (or (and (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_12 Int) (v_max_~ret~0_57 Int) (v_max_~x.base_BEFORE_RETURN_12 Int)) (and (or (= (mod v_max_~ret~0_57 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_16| (mod v_max_~ret~0_57 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_12) (+ 156 v_max_~x.offset_BEFORE_RETURN_12)) v_max_~ret~0_57)))) (and (exists ((|v_#memory_int_38| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_38| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_11 Int) (v_max_~ret~0_57 Int) (v_max_~x.base_BEFORE_RETURN_11 Int)) (and (or (= (mod v_max_~ret~0_57 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_16| (mod v_max_~ret~0_57 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_11) (+ 156 v_max_~x.offset_BEFORE_RETURN_11)) v_max_~ret~0_57))))) (<= |v_ULTIMATE.start_main_~ret5~0#1_16| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_15| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_15| |v_ULTIMATE.start_main_~ret~1#1_15|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_15| |v_ULTIMATE.start_main_~ret5~0#1_16|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_15| 2147483648)))))' at error location [2024-11-09 04:30:50,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:30:50,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:30:50,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 04:30:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839777255] [2024-11-09 04:30:50,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:30:50,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:30:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:30:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=411, Unknown=24, NotChecked=0, Total=506 [2024-11-09 04:30:50,487 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:30:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:50,526 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-11-09 04:30:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:30:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2024-11-09 04:30:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:50,527 INFO L225 Difference]: With dead ends: 57 [2024-11-09 04:30:50,528 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 04:30:50,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=71, Invalid=411, Unknown=24, NotChecked=0, Total=506 [2024-11-09 04:30:50,529 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:50,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:30:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 04:30:50,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 04:30:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:30:50,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-09 04:30:50,535 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 41 [2024-11-09 04:30:50,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:50,536 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-09 04:30:50,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:30:50,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-09 04:30:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 04:30:50,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:50,537 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:50,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:30:50,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:50,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:30:50,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1822142164, now seen corresponding path program 3 times [2024-11-09 04:30:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137848381] [2024-11-09 04:30:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:50,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-09 04:30:50,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:50,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137848381] [2024-11-09 04:30:50,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137848381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:50,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122809164] [2024-11-09 04:30:50,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:30:50,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:50,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:50,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:50,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:30:50,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:30:50,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:30:50,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:30:50,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 04:30:51,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:51,136 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-09 04:30:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122809164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:51,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579596960] [2024-11-09 04:30:51,139 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:30:51,139 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:51,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:51,140 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:51,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:30:51,922 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:30:51,976 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:31:24,132 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1605#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_18| Int) (|v_ULTIMATE.start_main_~ret2~0#1_17| Int) (|v_ULTIMATE.start_main_~ret~1#1_17| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_17| |v_ULTIMATE.start_main_~ret~1#1_17|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_17| |v_ULTIMATE.start_main_~ret5~0#1_18|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_17| 2147483648)) (or (and (exists ((v_max_~x.base_BEFORE_RETURN_17 Int) (v_max_~ret~0_87 Int) (v_max_~x.offset_BEFORE_RETURN_17 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_17) (+ 156 v_max_~x.offset_BEFORE_RETURN_17)) v_max_~ret~0_87) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296) (mod v_max_~ret~0_87 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_18| (mod v_max_~ret~0_87 4294967296))))) (exists ((|v_#memory_int_53| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156)))))) (and (exists ((v_max_~x.base_BEFORE_RETURN_18 Int) (v_max_~x.offset_BEFORE_RETURN_18 Int) (v_max_~ret~0_87 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_18) (+ 156 v_max_~x.offset_BEFORE_RETURN_18)) v_max_~ret~0_87) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296) (mod v_max_~ret~0_87 4294967296)) (= |v_ULTIMATE.start_main_~ret5~0#1_18| (mod v_max_~ret~0_87 4294967296))))) (exists ((|v_#memory_int_53| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_53| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_18| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_17| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_17| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_17| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 04:31:24,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:31:24,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:31:24,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-11-09 04:31:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263027668] [2024-11-09 04:31:24,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:31:24,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:31:24,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:31:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=720, Unknown=28, NotChecked=0, Total=870 [2024-11-09 04:31:24,136 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:31:24,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:24,219 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2024-11-09 04:31:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:31:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-11-09 04:31:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:24,221 INFO L225 Difference]: With dead ends: 78 [2024-11-09 04:31:24,221 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 04:31:24,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=122, Invalid=720, Unknown=28, NotChecked=0, Total=870 [2024-11-09 04:31:24,222 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:24,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 04:31:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 04:31:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 46 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:31:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-09 04:31:24,229 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 59 [2024-11-09 04:31:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:24,229 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-09 04:31:24,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:31:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-09 04:31:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 04:31:24,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:24,232 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:24,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:31:24,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:24,432 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:24,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -384968401, now seen corresponding path program 4 times [2024-11-09 04:31:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229106837] [2024-11-09 04:31:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 04:31:24,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:24,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229106837] [2024-11-09 04:31:24,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229106837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:31:24,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338883871] [2024-11-09 04:31:24,930 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:31:24,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:31:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:24,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:31:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:31:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:25,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:31:25,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:31:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 04:31:25,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:31:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 04:31:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338883871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:31:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1938318941] [2024-11-09 04:31:25,394 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:31:25,395 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:31:25,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:31:25,395 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:31:25,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:31:26,113 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:31:26,170 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:32:04,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2267#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_19| Int) (|v_ULTIMATE.start_main_~ret5~0#1_20| Int) (|v_ULTIMATE.start_main_~ret~1#1_19| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_19| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_20| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_19| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_19| 2147483647) (or (and (exists ((|v_#memory_int_74| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_74| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_74| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~ret~0_117 Int) (v_max_~x.offset_BEFORE_RETURN_23 Int) (v_max_~x.base_BEFORE_RETURN_23 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_20| (mod v_max_~ret~0_117 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296) (mod v_max_~ret~0_117 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_23) (+ 156 v_max_~x.offset_BEFORE_RETURN_23)) v_max_~ret~0_117)))) (and (exists ((v_max_~ret~0_117 Int) (v_max_~x.offset_BEFORE_RETURN_24 Int) (v_max_~x.base_BEFORE_RETURN_24 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_20| (mod v_max_~ret~0_117 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296) (mod v_max_~ret~0_117 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_24) (+ 156 v_max_~x.offset_BEFORE_RETURN_24)) v_max_~ret~0_117))) (exists ((|v_#memory_int_74| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_74| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_74| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_19| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_19| |v_ULTIMATE.start_main_~ret~1#1_19|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_19| |v_ULTIMATE.start_main_~ret5~0#1_20|))))))' at error location [2024-11-09 04:32:04,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:32:04,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:32:04,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-11-09 04:32:04,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585644872] [2024-11-09 04:32:04,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:32:04,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:32:04,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:32:04,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:32:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1260, Unknown=29, NotChecked=0, Total=1640 [2024-11-09 04:32:04,358 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:32:04,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:04,489 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2024-11-09 04:32:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 04:32:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 73 [2024-11-09 04:32:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:04,490 INFO L225 Difference]: With dead ends: 104 [2024-11-09 04:32:04,491 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 04:32:04,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=351, Invalid=1260, Unknown=29, NotChecked=0, Total=1640 [2024-11-09 04:32:04,493 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:04,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:32:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 04:32:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-09 04:32:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:32:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2024-11-09 04:32:04,502 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 73 [2024-11-09 04:32:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:04,502 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2024-11-09 04:32:04,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:32:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2024-11-09 04:32:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 04:32:04,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:04,504 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 12, 12, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:04,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:04,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:04,705 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:04,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash 296810731, now seen corresponding path program 5 times [2024-11-09 04:32:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:32:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629776276] [2024-11-09 04:32:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:32:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-09 04:32:05,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:32:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629776276] [2024-11-09 04:32:05,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629776276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:32:05,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883613472] [2024-11-09 04:32:05,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:32:05,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:32:05,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:32:05,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 04:32:05,847 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:32:05,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:32:05,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:32:05,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 88 proven. 4 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-09 04:32:05,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2024-11-09 04:32:06,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883613472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:06,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056254936] [2024-11-09 04:32:06,016 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:32:06,018 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:32:06,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:32:06,018 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:32:06,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:32:06,554 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:32:06,594 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:32:24,949 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3154#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret~1#1_20| Int) (|v_ULTIMATE.start_main_~ret2~0#1_21| Int) (|v_ULTIMATE.start_main_~ret5~0#1_22| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_21| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_22| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_20| 2147483648)) (or (and (exists ((|v_#memory_int_84| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_84| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_84| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_30 Int) (v_max_~x.base_BEFORE_RETURN_30 Int) (v_max_~ret~0_147 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod v_max_~ret~0_147 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod v_max_~ret~0_147 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_30) (+ 156 v_max_~x.offset_BEFORE_RETURN_30)) v_max_~ret~0_147)))) (and (exists ((|v_#memory_int_84| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_84| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_84| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.base_BEFORE_RETURN_29 Int) (v_max_~x.offset_BEFORE_RETURN_29 Int) (v_max_~ret~0_147 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod v_max_~ret~0_147 4294967296)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod v_max_~ret~0_147 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_29) (+ 156 v_max_~x.offset_BEFORE_RETURN_29)) v_max_~ret~0_147))))) (<= |v_ULTIMATE.start_main_~ret~1#1_20| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_21| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_20| |v_ULTIMATE.start_main_~ret5~0#1_22|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_21| |v_ULTIMATE.start_main_~ret~1#1_20|))))))' at error location [2024-11-09 04:32:24,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:32:24,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:32:24,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-11-09 04:32:24,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836938522] [2024-11-09 04:32:24,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:32:24,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 04:32:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:32:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 04:32:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1836, Unknown=36, NotChecked=0, Total=2256 [2024-11-09 04:32:24,953 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:32:25,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:25,107 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-09 04:32:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 04:32:25,108 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2024-11-09 04:32:25,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:25,111 INFO L225 Difference]: With dead ends: 114 [2024-11-09 04:32:25,111 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 04:32:25,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=384, Invalid=1836, Unknown=36, NotChecked=0, Total=2256 [2024-11-09 04:32:25,113 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:25,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 128 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:32:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 04:32:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-11-09 04:32:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 79 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:32:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-09 04:32:25,122 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 97 [2024-11-09 04:32:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:25,122 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-09 04:32:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 31 states have internal predecessors, (84), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:32:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-09 04:32:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 04:32:25,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:25,125 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 12, 12, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:25,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:32:25,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:25,326 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:25,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1619133572, now seen corresponding path program 6 times [2024-11-09 04:32:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:32:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170763421] [2024-11-09 04:32:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:32:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 04:32:26,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:32:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170763421] [2024-11-09 04:32:26,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170763421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:32:26,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724671112] [2024-11-09 04:32:26,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:32:26,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:26,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:32:26,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:32:26,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 04:32:26,805 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:32:26,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:32:26,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:32:26,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 04:32:26,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 04:32:27,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724671112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:27,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1767586252] [2024-11-09 04:32:27,722 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:32:27,722 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:32:27,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:32:27,722 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:32:27,723 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:32:28,248 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:32:28,295 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:32:52,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4143#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret~1#1_22| Int) (|v_ULTIMATE.start_main_~ret2~0#1_23| Int) (|v_ULTIMATE.start_main_~ret5~0#1_24| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_23| 2147483647) (or (and (exists ((v_max_~x.offset_BEFORE_RETURN_36 Int) (v_max_~x.base_BEFORE_RETURN_36 Int) (v_max_~ret~0_177 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_24| (mod v_max_~ret~0_177 4294967296)) (= (mod v_max_~ret~0_177 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_36) (+ 156 v_max_~x.offset_BEFORE_RETURN_36)) v_max_~ret~0_177))) (exists ((|v_#memory_int_122| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_122| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156)))))) (and (exists ((v_max_~x.offset_BEFORE_RETURN_35 Int) (v_max_~x.base_BEFORE_RETURN_35 Int) (v_max_~ret~0_177 Int)) (and (or (= |v_ULTIMATE.start_main_~ret5~0#1_24| (mod v_max_~ret~0_177 4294967296)) (= (mod v_max_~ret~0_177 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_35) (+ 156 v_max_~x.offset_BEFORE_RETURN_35)) v_max_~ret~0_177))) (exists ((|v_#memory_int_122| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_122| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_122| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_23| |v_ULTIMATE.start_main_~ret~1#1_22|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_22| |v_ULTIMATE.start_main_~ret5~0#1_24|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_23| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_22| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_24| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_22| 2147483648)))))' at error location [2024-11-09 04:32:52,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:32:52,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:32:52,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 43 [2024-11-09 04:32:52,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649274109] [2024-11-09 04:32:52,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:32:52,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 04:32:52,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:32:52,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 04:32:52,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2541, Unknown=39, NotChecked=0, Total=3540 [2024-11-09 04:32:52,450 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:32:52,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:32:52,657 INFO L93 Difference]: Finished difference Result 154 states and 178 transitions. [2024-11-09 04:32:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 04:32:52,658 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 107 [2024-11-09 04:32:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:32:52,659 INFO L225 Difference]: With dead ends: 154 [2024-11-09 04:32:52,659 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 04:32:52,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 279 SyntacticMatches, 8 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1232 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=960, Invalid=2541, Unknown=39, NotChecked=0, Total=3540 [2024-11-09 04:32:52,666 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:32:52,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 92 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:32:52,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 04:32:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-09 04:32:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 113 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:32:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2024-11-09 04:32:52,687 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 107 [2024-11-09 04:32:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:32:52,688 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2024-11-09 04:32:52,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 04:32:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2024-11-09 04:32:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-09 04:32:52,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:32:52,694 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 12, 12, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:32:52,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 04:32:52,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:52,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:32:52,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:32:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1181817113, now seen corresponding path program 7 times [2024-11-09 04:32:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:32:52,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052701328] [2024-11-09 04:32:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:32:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:32:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 1714 trivial. 0 not checked. [2024-11-09 04:32:53,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:32:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052701328] [2024-11-09 04:32:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052701328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:32:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312784484] [2024-11-09 04:32:53,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:32:53,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:32:53,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:32:53,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:32:53,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:32:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:32:53,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:32:53,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:32:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 84 proven. 16 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2024-11-09 04:32:53,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:32:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 1714 trivial. 0 not checked. [2024-11-09 04:32:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312784484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:32:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402924002] [2024-11-09 04:32:53,591 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:32:53,592 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:32:53,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:32:53,593 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:32:53,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:32:54,191 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:32:54,242 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:33:30,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5418#(and (exists ((|v_ULTIMATE.start_main_~ret2~0#1_25| Int) (|v_ULTIMATE.start_main_~ret~1#1_24| Int) (|v_ULTIMATE.start_main_~ret5~0#1_26| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_25| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_24| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_24| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_25| |v_ULTIMATE.start_main_~ret~1#1_24|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_24| |v_ULTIMATE.start_main_~ret5~0#1_26|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_25| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_26| 2147483647) (or (and (exists ((|v_#memory_int_138| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_138| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_138| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_41 Int) (v_max_~x.base_BEFORE_RETURN_41 Int) (v_max_~ret~0_212 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_41) (+ 156 v_max_~x.offset_BEFORE_RETURN_41)) v_max_~ret~0_212) (or (= (mod v_max_~ret~0_212 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_26|) (= (mod v_max_~ret~0_212 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296)))))) (and (exists ((v_max_~x.offset_BEFORE_RETURN_42 Int) (v_max_~x.base_BEFORE_RETURN_42 Int) (v_max_~ret~0_212 Int)) (and (or (= (mod v_max_~ret~0_212 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_26|) (= (mod v_max_~ret~0_212 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_42) (+ 156 v_max_~x.offset_BEFORE_RETURN_42)) v_max_~ret~0_212))) (exists ((|v_#memory_int_138| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_138| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_138| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 04:33:30,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:33:30,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:33:30,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 04:33:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012837489] [2024-11-09 04:33:30,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:33:30,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:33:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:33:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:33:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=656, Unknown=28, NotChecked=0, Total=812 [2024-11-09 04:33:30,570 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:33:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:33:30,637 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2024-11-09 04:33:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:33:30,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-11-09 04:33:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:33:30,640 INFO L225 Difference]: With dead ends: 164 [2024-11-09 04:33:30,640 INFO L226 Difference]: Without dead ends: 130 [2024-11-09 04:33:30,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 400 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 36.4s TimeCoverageRelationStatistics Valid=128, Invalid=656, Unknown=28, NotChecked=0, Total=812 [2024-11-09 04:33:30,642 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:33:30,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:33:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-09 04:33:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-09 04:33:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:33:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2024-11-09 04:33:30,669 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 141 [2024-11-09 04:33:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:33:30,674 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2024-11-09 04:33:30,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:33:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2024-11-09 04:33:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 04:33:30,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:33:30,679 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 30, 30, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:33:30,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 04:33:30,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 04:33:30,880 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:33:30,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:33:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash 705768771, now seen corresponding path program 8 times [2024-11-09 04:33:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:33:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922547143] [2024-11-09 04:33:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:33:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:33:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 2062 trivial. 0 not checked. [2024-11-09 04:33:31,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:33:31,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922547143] [2024-11-09 04:33:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922547143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:33:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562343761] [2024-11-09 04:33:31,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:33:31,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:33:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:33:31,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:33:31,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 04:33:31,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 04:33:31,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:33:31,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:33:31,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:33:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 448 proven. 36 refuted. 0 times theorem prover too weak. 2124 trivial. 0 not checked. [2024-11-09 04:33:32,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:33:32,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 2572 trivial. 0 not checked. [2024-11-09 04:33:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562343761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:33:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [788895659] [2024-11-09 04:33:32,306 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:33:32,306 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:33:32,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:33:32,306 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:33:32,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:33:32,976 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:33:33,032 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:34:00,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6955#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_28| Int) (|v_ULTIMATE.start_main_~ret2~0#1_27| Int) (|v_ULTIMATE.start_main_~ret~1#1_25| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 2147483648)) (or (and (exists ((|v_#memory_int_153| (Array Int (Array Int Int)))) (= (store |v_#memory_int_153| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_153| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))) |#memory_int|)) (exists ((v_max_~ret~0_260 Int) (v_max_~x.offset_BEFORE_RETURN_48 Int) (v_max_~x.base_BEFORE_RETURN_48 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_48) (+ 156 v_max_~x.offset_BEFORE_RETURN_48)) v_max_~ret~0_260) (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 4294967296) (mod v_max_~ret~0_260 4294967296)) (= (mod v_max_~ret~0_260 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_28|))))) (and (exists ((|v_#memory_int_153| (Array Int (Array Int Int)))) (= (store |v_#memory_int_153| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_153| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))) |#memory_int|)) (exists ((v_max_~x.offset_BEFORE_RETURN_47 Int) (v_max_~ret~0_260 Int) (v_max_~x.base_BEFORE_RETURN_47 Int)) (and (or (= (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 4294967296) (mod v_max_~ret~0_260 4294967296)) (= (mod v_max_~ret~0_260 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_28|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_47) (+ 156 v_max_~x.offset_BEFORE_RETURN_47)) v_max_~ret~0_260))))) (<= |v_ULTIMATE.start_main_~ret5~0#1_28| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_25| |v_ULTIMATE.start_main_~ret5~0#1_28|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_27| |v_ULTIMATE.start_main_~ret~1#1_25|))) (<= |v_ULTIMATE.start_main_~ret2~0#1_27| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_25| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_25| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_27| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 04:34:00,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:34:00,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:34:00,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-09 04:34:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929647204] [2024-11-09 04:34:00,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:34:00,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 04:34:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:34:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 04:34:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1601, Unknown=37, NotChecked=0, Total=1892 [2024-11-09 04:34:00,103 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:34:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:34:00,239 INFO L93 Difference]: Finished difference Result 195 states and 213 transitions. [2024-11-09 04:34:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 04:34:00,240 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 177 [2024-11-09 04:34:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:34:00,242 INFO L225 Difference]: With dead ends: 195 [2024-11-09 04:34:00,242 INFO L226 Difference]: Without dead ends: 149 [2024-11-09 04:34:00,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=254, Invalid=1601, Unknown=37, NotChecked=0, Total=1892 [2024-11-09 04:34:00,244 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:34:00,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 100 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:34:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-09 04:34:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-09 04:34:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.020979020979021) internal successors, (146), 143 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:34:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2024-11-09 04:34:00,256 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 177 [2024-11-09 04:34:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:34:00,256 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2024-11-09 04:34:00,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 04:34:00,257 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2024-11-09 04:34:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-09 04:34:00,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:34:00,260 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 33, 33, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:34:00,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 04:34:00,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:34:00,461 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:34:00,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:34:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1008957714, now seen corresponding path program 9 times [2024-11-09 04:34:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:34:00,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409531266] [2024-11-09 04:34:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:34:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:34:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:34:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2963 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 2308 trivial. 0 not checked. [2024-11-09 04:34:01,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:34:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409531266] [2024-11-09 04:34:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409531266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:34:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000031376] [2024-11-09 04:34:01,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:34:01,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:34:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:34:01,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:34:01,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 04:34:01,538 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:34:01,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:34:01,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:34:01,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:34:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2963 backedges. 532 proven. 121 refuted. 0 times theorem prover too weak. 2310 trivial. 0 not checked. [2024-11-09 04:34:01,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:34:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2963 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 2308 trivial. 0 not checked. [2024-11-09 04:34:01,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000031376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:34:01,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1142102729] [2024-11-09 04:34:01,967 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:34:01,967 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:34:01,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:34:01,968 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:34:01,968 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:34:02,540 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:34:02,583 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:34:32,404 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8698#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret2~0#1_29| Int) (|v_ULTIMATE.start_main_~ret5~0#1_30| Int) (|v_ULTIMATE.start_main_~ret~1#1_27| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_29| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_27| 2147483648)) (or (and (exists ((|v_#memory_int_176| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_176| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_176| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_54 Int) (v_max_~x.base_BEFORE_RETURN_54 Int) (v_max_~ret~0_323 Int)) (and (or (= (mod v_max_~ret~0_323 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_30|) (= (mod v_max_~ret~0_323 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_54) (+ 156 v_max_~x.offset_BEFORE_RETURN_54)) v_max_~ret~0_323)))) (and (exists ((v_max_~x.offset_BEFORE_RETURN_53 Int) (v_max_~ret~0_323 Int) (v_max_~x.base_BEFORE_RETURN_53 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_53) (+ 156 v_max_~x.offset_BEFORE_RETURN_53)) v_max_~ret~0_323) (or (= (mod v_max_~ret~0_323 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_30|) (= (mod v_max_~ret~0_323 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296))))) (exists ((|v_#memory_int_176| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_176| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_176| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_29| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483647) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_29| |v_ULTIMATE.start_main_~ret~1#1_27|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_27| |v_ULTIMATE.start_main_~ret5~0#1_30|))) (<= |v_ULTIMATE.start_main_~ret~1#1_27| 2147483647))))' at error location [2024-11-09 04:34:32,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:34:32,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:34:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-09 04:34:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652267632] [2024-11-09 04:34:32,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:34:32,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 04:34:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:34:32,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 04:34:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1381, Unknown=24, NotChecked=0, Total=1806 [2024-11-09 04:34:32,407 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:34:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:34:32,513 INFO L93 Difference]: Finished difference Result 238 states and 260 transitions. [2024-11-09 04:34:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 04:34:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 199 [2024-11-09 04:34:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:34:32,519 INFO L225 Difference]: With dead ends: 238 [2024-11-09 04:34:32,519 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 04:34:32,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 567 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=401, Invalid=1381, Unknown=24, NotChecked=0, Total=1806 [2024-11-09 04:34:32,520 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:34:32,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:34:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 04:34:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-09 04:34:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.017751479289941) internal successors, (172), 169 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:34:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2024-11-09 04:34:32,533 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 199 [2024-11-09 04:34:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:34:32,533 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2024-11-09 04:34:32,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:34:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2024-11-09 04:34:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-09 04:34:32,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:34:32,538 INFO L215 NwaCegarLoop]: trace histogram [72, 72, 40, 40, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:34:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 04:34:32,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 04:34:32,742 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:34:32,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:34:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash -449256755, now seen corresponding path program 10 times [2024-11-09 04:34:32,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:34:32,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436905076] [2024-11-09 04:34:32,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:34:32,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:34:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:34:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7136 backedges. 0 proven. 2982 refuted. 0 times theorem prover too weak. 4154 trivial. 0 not checked. [2024-11-09 04:34:34,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:34:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436905076] [2024-11-09 04:34:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436905076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:34:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953268455] [2024-11-09 04:34:34,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:34:34,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:34:34,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:34:34,471 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:34:34,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 04:34:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:34:34,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:34:34,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:34:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7136 backedges. 2404 proven. 576 refuted. 0 times theorem prover too weak. 4156 trivial. 0 not checked. [2024-11-09 04:34:34,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:34:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7136 backedges. 0 proven. 2982 refuted. 0 times theorem prover too weak. 4154 trivial. 0 not checked. [2024-11-09 04:34:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953268455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:34:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [345472786] [2024-11-09 04:34:35,754 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:34:35,754 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:34:35,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:34:35,755 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:34:35,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:34:36,216 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:34:36,263 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:35:13,878 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11028#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_32| Int) (|v_ULTIMATE.start_main_~ret~1#1_29| Int) (|v_ULTIMATE.start_main_~ret2~0#1_31| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_31| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_31| 2147483648)) (or (and (exists ((|v_#memory_int_200| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_200| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_200| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~ret~0_438 Int) (v_max_~x.offset_BEFORE_RETURN_59 Int) (v_max_~x.base_BEFORE_RETURN_59 Int)) (and (or (= (mod v_max_~ret~0_438 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)) (= (mod v_max_~ret~0_438 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_59) (+ 156 v_max_~x.offset_BEFORE_RETURN_59)) v_max_~ret~0_438)))) (and (exists ((|v_#memory_int_200| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_200| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_200| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.base_BEFORE_RETURN_60 Int) (v_max_~ret~0_438 Int) (v_max_~x.offset_BEFORE_RETURN_60 Int)) (and (or (= (mod v_max_~ret~0_438 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)) (= (mod v_max_~ret~0_438 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_60) (+ 156 v_max_~x.offset_BEFORE_RETURN_60)) v_max_~ret~0_438))))) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_29| |v_ULTIMATE.start_main_~ret5~0#1_32|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_31| |v_ULTIMATE.start_main_~ret~1#1_29|))) (<= |v_ULTIMATE.start_main_~ret~1#1_29| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_29| 2147483648)))))' at error location [2024-11-09 04:35:13,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:35:13,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:35:13,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 43 [2024-11-09 04:35:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942300274] [2024-11-09 04:35:13,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:35:13,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-09 04:35:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:35:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-09 04:35:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=2540, Unknown=41, NotChecked=0, Total=3540 [2024-11-09 04:35:13,881 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:35:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:35:14,060 INFO L93 Difference]: Finished difference Result 296 states and 321 transitions. [2024-11-09 04:35:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-09 04:35:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 277 [2024-11-09 04:35:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:35:14,063 INFO L225 Difference]: With dead ends: 296 [2024-11-09 04:35:14,063 INFO L226 Difference]: Without dead ends: 206 [2024-11-09 04:35:14,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 856 GetRequests, 788 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=959, Invalid=2540, Unknown=41, NotChecked=0, Total=3540 [2024-11-09 04:35:14,065 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:35:14,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:35:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-09 04:35:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-09 04:35:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.0149253731343284) internal successors, (204), 201 states have internal predecessors, (204), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:35:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 210 transitions. [2024-11-09 04:35:14,080 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 210 transitions. Word has length 277 [2024-11-09 04:35:14,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:35:14,081 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 210 transitions. [2024-11-09 04:35:14,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.5348837209302326) internal successors, (109), 43 states have internal predecessors, (109), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:35:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 210 transitions. [2024-11-09 04:35:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-09 04:35:14,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:35:14,088 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 40, 40, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:35:14,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 04:35:14,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 04:35:14,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:35:14,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:35:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash 618229565, now seen corresponding path program 11 times [2024-11-09 04:35:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:35:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960083487] [2024-11-09 04:35:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:35:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:35:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:35:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 16252 trivial. 0 not checked. [2024-11-09 04:35:15,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:35:15,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960083487] [2024-11-09 04:35:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960083487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:35:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294076993] [2024-11-09 04:35:15,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:35:15,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:35:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:35:15,541 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:35:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 04:35:16,931 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-09 04:35:16,932 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:35:16,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 04:35:16,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:35:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 6568 proven. 196 refuted. 0 times theorem prover too weak. 9684 trivial. 0 not checked. [2024-11-09 04:35:17,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:35:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16448 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 16252 trivial. 0 not checked. [2024-11-09 04:35:17,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294076993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:35:17,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [462758333] [2024-11-09 04:35:17,453 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:35:17,453 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:35:17,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:35:17,454 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:35:17,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:35:17,975 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:35:18,012 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:35:41,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14060#(and (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (exists ((|v_ULTIMATE.start_main_~ret~1#1_30| Int) (|v_ULTIMATE.start_main_~ret5~0#1_34| Int) (|v_ULTIMATE.start_main_~ret2~0#1_33| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret~1#1_30| |v_ULTIMATE.start_main_~ret5~0#1_34|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_33| |v_ULTIMATE.start_main_~ret~1#1_30|))) (<= |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_30| 2147483648)) (or (and (exists ((|v_#memory_int_223| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_223| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_223| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_66 Int) (v_max_~x.base_BEFORE_RETURN_66 Int) (v_max_~ret~0_576 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_66) (+ 156 v_max_~x.offset_BEFORE_RETURN_66)) v_max_~ret~0_576) (or (= (mod v_max_~ret~0_576 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)) (= (mod v_max_~ret~0_576 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_34|))))) (and (exists ((|v_#memory_int_223| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_223| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_223| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))) (exists ((v_max_~x.offset_BEFORE_RETURN_65 Int) (v_max_~x.base_BEFORE_RETURN_65 Int) (v_max_~ret~0_576 Int)) (and (or (= (mod v_max_~ret~0_576 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296)) (= (mod v_max_~ret~0_576 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_34|)) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_65) (+ 156 v_max_~x.offset_BEFORE_RETURN_65)) v_max_~ret~0_576))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_33| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_30| 2147483647))))' at error location [2024-11-09 04:35:41,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:35:41,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:35:41,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-09 04:35:41,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49084970] [2024-11-09 04:35:41,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:35:41,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 04:35:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:35:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 04:35:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=1829, Unknown=36, NotChecked=0, Total=2450 [2024-11-09 04:35:41,919 INFO L87 Difference]: Start difference. First operand 206 states and 210 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:35:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:35:42,107 INFO L93 Difference]: Finished difference Result 328 states and 348 transitions. [2024-11-09 04:35:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 04:35:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 373 [2024-11-09 04:35:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:35:42,110 INFO L225 Difference]: With dead ends: 328 [2024-11-09 04:35:42,110 INFO L226 Difference]: Without dead ends: 238 [2024-11-09 04:35:42,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1086 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=585, Invalid=1829, Unknown=36, NotChecked=0, Total=2450 [2024-11-09 04:35:42,112 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:35:42,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 139 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:35:42,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-09 04:35:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-09 04:35:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 233 states have internal predecessors, (236), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:35:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 242 transitions. [2024-11-09 04:35:42,127 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 242 transitions. Word has length 373 [2024-11-09 04:35:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:35:42,128 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 242 transitions. [2024-11-09 04:35:42,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 states have internal predecessors, (83), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:35:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 242 transitions. [2024-11-09 04:35:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-09 04:35:42,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:35:42,135 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 40, 40, 30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:35:42,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 04:35:42,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 04:35:42,336 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:35:42,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:35:42,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1718173581, now seen corresponding path program 12 times [2024-11-09 04:35:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:35:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158066342] [2024-11-09 04:35:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:35:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:35:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:35:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17152 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 16252 trivial. 0 not checked. [2024-11-09 04:35:45,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:35:45,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158066342] [2024-11-09 04:35:45,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158066342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:35:45,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424415611] [2024-11-09 04:35:45,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:35:45,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:35:45,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:35:45,357 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:35:45,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 04:35:45,950 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:35:45,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:35:45,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:35:45,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:35:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17152 backedges. 6568 proven. 900 refuted. 0 times theorem prover too weak. 9684 trivial. 0 not checked. [2024-11-09 04:35:46,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:35:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 17152 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 16252 trivial. 0 not checked. [2024-11-09 04:35:47,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424415611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:35:47,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749971213] [2024-11-09 04:35:47,205 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 04:35:47,206 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:35:47,206 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:35:47,206 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:35:47,207 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:35:47,765 INFO L197 IcfgInterpreter]: Interpreting procedure max with input of size 10 for LOIs [2024-11-09 04:35:47,805 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:36:31,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17389#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_31| Int) (|v_ULTIMATE.start_main_~ret2~0#1_35| Int) (|v_ULTIMATE.start_main_~ret5~0#1_36| Int)) (and (<= |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_35| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_31| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_31| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_35| 2147483647) (or (and (exists ((v_max_~ret~0_714 Int) (v_max_~x.offset_BEFORE_RETURN_72 Int) (v_max_~x.base_BEFORE_RETURN_72 Int)) (and (or (= (mod v_max_~ret~0_714 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_36|) (= (mod v_max_~ret~0_714 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296))) (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_72) (+ 156 v_max_~x.offset_BEFORE_RETURN_72)) v_max_~ret~0_714))) (exists ((|v_#memory_int_261| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_261| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_261| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156)))))) (and (exists ((v_max_~x.base_BEFORE_RETURN_71 Int) (v_max_~ret~0_714 Int) (v_max_~x.offset_BEFORE_RETURN_71 Int)) (and (<= (select (select |#memory_int| v_max_~x.base_BEFORE_RETURN_71) (+ 156 v_max_~x.offset_BEFORE_RETURN_71)) v_max_~ret~0_714) (or (= (mod v_max_~ret~0_714 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_36|) (= (mod v_max_~ret~0_714 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296))))) (exists ((|v_#memory_int_261| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_261| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_261| |ULTIMATE.start_main_~#x~0#1.base|) 156 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 156))))))) (or (not (= |v_ULTIMATE.start_main_~ret~1#1_31| |v_ULTIMATE.start_main_~ret5~0#1_36|)) (not (= |v_ULTIMATE.start_main_~ret2~0#1_35| |v_ULTIMATE.start_main_~ret~1#1_31|))) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 04:36:31,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:36:31,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:36:31,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 42 [2024-11-09 04:36:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273617145] [2024-11-09 04:36:31,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:36:31,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 04:36:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:36:31,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 04:36:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=912, Invalid=2366, Unknown=28, NotChecked=0, Total=3306 [2024-11-09 04:36:31,326 INFO L87 Difference]: Start difference. First operand 238 states and 242 transitions. Second operand has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 42 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:36:31,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:36:31,532 INFO L93 Difference]: Finished difference Result 346 states and 359 transitions. [2024-11-09 04:36:31,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-09 04:36:31,533 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 42 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 405 [2024-11-09 04:36:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:36:31,536 INFO L225 Difference]: With dead ends: 346 [2024-11-09 04:36:31,536 INFO L226 Difference]: Without dead ends: 256 [2024-11-09 04:36:31,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1166 SyntacticMatches, 24 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=912, Invalid=2366, Unknown=28, NotChecked=0, Total=3306 [2024-11-09 04:36:31,538 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:36:31,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:36:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-09 04:36:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-09 04:36:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:36:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 260 transitions. [2024-11-09 04:36:31,550 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 260 transitions. Word has length 405 [2024-11-09 04:36:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:36:31,551 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 260 transitions. [2024-11-09 04:36:31,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.4523809523809526) internal successors, (103), 42 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 04:36:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 260 transitions. [2024-11-09 04:36:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-11-09 04:36:31,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:36:31,555 INFO L215 NwaCegarLoop]: trace histogram [120, 120, 40, 40, 39, 39, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:36:31,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 04:36:31,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cfecc6-1481-4229-be6d-529844d4cac2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 04:36:31,756 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:36:31,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:36:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1577687526, now seen corresponding path program 13 times [2024-11-09 04:36:31,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:36:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685889289] [2024-11-09 04:36:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:36:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms