./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/sum60-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/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_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sum60-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/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_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/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 1e103c401871989cc14d279d58bbc5c5cf6c927e71f95ee371c76ee69c6b1150 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:05:03,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:05:03,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:05:03,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:05:03,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:05:03,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:05:03,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:05:03,914 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:05:03,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:05:03,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:05:03,918 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:05:03,919 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:05:03,919 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:05:03,920 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:05:03,920 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:05:03,922 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:05:03,922 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:05:03,923 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:05:03,923 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:05:03,924 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:05:03,926 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:05:03,927 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:05:03,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:05:03,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:05:03,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:05:03,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:05:03,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:05:03,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:05:03,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:05:03,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:05:03,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:05:03,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:05:03,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:05:03,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:05:03,932 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:05:03,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:05:03,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:05:03,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:05:03,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:05:03,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:05:03,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:05:03,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:05:03,934 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:05:03,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:05:03,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:05:03,935 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:05:03,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:05:03,936 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_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e103c401871989cc14d279d58bbc5c5cf6c927e71f95ee371c76ee69c6b1150 [2024-11-09 01:05:04,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:05:04,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:05:04,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:05:04,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:05:04,236 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:05:04,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/reducercommutativity/sum60-2.i Unable to find full path for "g++" [2024-11-09 01:05:06,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:05:06,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:05:06,458 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/sv-benchmarks/c/reducercommutativity/sum60-2.i [2024-11-09 01:05:06,467 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/data/0ba9038bb/8abbaf53ea72420bb23cddda2976d9a1/FLAGc13c06c4d [2024-11-09 01:05:06,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/data/0ba9038bb/8abbaf53ea72420bb23cddda2976d9a1 [2024-11-09 01:05:06,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:05:06,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:05:06,498 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:05:06,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:05:06,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:05:06,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e770c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06, skipping insertion in model container [2024-11-09 01:05:06,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,541 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:05:06,815 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_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/sv-benchmarks/c/reducercommutativity/sum60-2.i[1277,1290] [2024-11-09 01:05:06,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:05:06,834 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:05:06,862 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_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/sv-benchmarks/c/reducercommutativity/sum60-2.i[1277,1290] [2024-11-09 01:05:06,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:05:06,883 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:05:06,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06 WrapperNode [2024-11-09 01:05:06,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:05:06,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:05:06,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:05:06,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:05:06,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,925 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-09 01:05:06,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:05:06,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:05:06,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:05:06,927 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:05:06,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,949 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:05:06,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:05:06,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:05:06,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:05:06,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (1/1) ... [2024-11-09 01:05:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:05:06,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:06,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:05:06,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:05:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:05:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-09 01:05:07,030 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-09 01:05:07,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:05:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 01:05:07,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 01:05:07,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:05:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:05:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 01:05:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:05:07,127 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:05:07,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:05:07,424 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-09 01:05:07,425 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:05:07,467 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:05:07,468 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 01:05:07,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:05:07 BoogieIcfgContainer [2024-11-09 01:05:07,468 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:05:07,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:05:07,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:05:07,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:05:07,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:05:06" (1/3) ... [2024-11-09 01:05:07,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aeca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:05:07, skipping insertion in model container [2024-11-09 01:05:07,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:05:06" (2/3) ... [2024-11-09 01:05:07,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41aeca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:05:07, skipping insertion in model container [2024-11-09 01:05:07,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:05:07" (3/3) ... [2024-11-09 01:05:07,489 INFO L112 eAbstractionObserver]: Analyzing ICFG sum60-2.i [2024-11-09 01:05:07,530 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:05:07,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 01:05:07,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:05:07,638 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;@5ea7f337, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:05:07,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 01:05:07,642 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 01:05:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 01:05:07,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:07,650 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 01:05:07,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:07,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash 844334208, now seen corresponding path program 1 times [2024-11-09 01:05:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:07,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178278841] [2024-11-09 01:05:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:07,986 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 01:05:07,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178278841] [2024-11-09 01:05:07,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178278841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:05:07,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:05:07,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:05:07,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490535585] [2024-11-09 01:05:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:05:07,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:05:07,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:05:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:05:08,025 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 01:05:08,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:08,076 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-11-09 01:05:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:05:08,079 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 01:05:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:08,087 INFO L225 Difference]: With dead ends: 45 [2024-11-09 01:05:08,087 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 01:05:08,090 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 01:05:08,094 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:08,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:05:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 01:05:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 01:05:08,137 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 01:05:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-09 01:05:08,142 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 25 [2024-11-09 01:05:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:08,144 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-09 01:05:08,144 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 01:05:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-09 01:05:08,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 01:05:08,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:08,148 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 01:05:08,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:05:08,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:08,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1404355259, now seen corresponding path program 1 times [2024-11-09 01:05:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:08,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028696630] [2024-11-09 01:05:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:08,366 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 01:05:08,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028696630] [2024-11-09 01:05:08,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028696630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702611877] [2024-11-09 01:05:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:08,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:08,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:08,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 01:05:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:08,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:05:08,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:08,508 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 01:05:08,508 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:05:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702611877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:05:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:05:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 01:05:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869429768] [2024-11-09 01:05:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:05:08,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:05:08,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:05:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:05:08,519 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 01:05:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:08,553 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2024-11-09 01:05:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:05:08,555 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 01:05:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:08,557 INFO L225 Difference]: With dead ends: 41 [2024-11-09 01:05:08,558 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 01:05:08,558 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 01:05:08,561 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 01:05:08,562 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 01:05:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 01:05:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 01:05:08,569 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 01:05:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-09 01:05:08,573 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 27 [2024-11-09 01:05:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:08,574 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-09 01:05:08,574 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 01:05:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-09 01:05:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 01:05:08,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:08,577 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 01:05:08,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 01:05:08,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:08,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:08,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1634553908, now seen corresponding path program 1 times [2024-11-09 01:05:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424689882] [2024-11-09 01:05:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:08,956 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 01:05:08,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424689882] [2024-11-09 01:05:08,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424689882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726717077] [2024-11-09 01:05:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:08,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:08,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 01:05:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:09,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:05:09,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:09,129 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 01:05:09,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:05:09,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726717077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:05:09,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:05:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 01:05:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440280946] [2024-11-09 01:05:09,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:05:09,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:05:09,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:09,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:05:09,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:05:09,136 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 01:05:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:09,185 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2024-11-09 01:05:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:05:09,192 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 01:05:09,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:09,193 INFO L225 Difference]: With dead ends: 40 [2024-11-09 01:05:09,193 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 01:05:09,194 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 01:05:09,195 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:09,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:05:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 01:05:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 01:05:09,211 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 01:05:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-09 01:05:09,213 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 33 [2024-11-09 01:05:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:09,218 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-09 01:05:09,218 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 01:05:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-09 01:05:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 01:05:09,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:09,220 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 01:05:09,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 01:05:09,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:09,426 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:09,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash 567747289, now seen corresponding path program 1 times [2024-11-09 01:05:09,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:09,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685462444] [2024-11-09 01:05:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:09,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:09,525 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 01:05:09,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685462444] [2024-11-09 01:05:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685462444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:09,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592089096] [2024-11-09 01:05:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:09,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:09,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:09,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 01:05:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:09,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:05:09,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:09,672 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 01:05:09,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:09,733 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 01:05:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592089096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [597311321] [2024-11-09 01:05:09,766 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:09,766 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:09,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:09,779 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:09,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:10,659 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:10,741 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:11,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '705#(and (<= 1 |#StackHeapBarrier|) (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_sum_~ret~0_26 Int)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_14| 4294967296) (mod v_sum_~ret~0_26 4294967296))) (exists ((|v_#memory_int_26| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_26| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_26| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_26 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_14| (mod v_sum_~ret~0_26 4294967296))) (exists ((|v_#memory_int_26| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_26| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_26| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_14| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_14| 2147483648)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:11,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:11,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-09 01:05:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192511747] [2024-11-09 01:05:11,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:11,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:05:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:05:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=478, Unknown=21, NotChecked=0, Total=600 [2024-11-09 01:05:11,997 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 01:05:12,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:12,050 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2024-11-09 01:05:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:05:12,051 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 01:05:12,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:12,052 INFO L225 Difference]: With dead ends: 54 [2024-11-09 01:05:12,052 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 01:05:12,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=478, Unknown=21, NotChecked=0, Total=600 [2024-11-09 01:05:12,054 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:12,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:05:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 01:05:12,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 01:05:12,060 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 01:05:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-09 01:05:12,061 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 35 [2024-11-09 01:05:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:12,062 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-09 01:05:12,062 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 01:05:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-09 01:05:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 01:05:12,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:12,063 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 01:05:12,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 01:05:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:12,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:12,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash -697524568, now seen corresponding path program 2 times [2024-11-09 01:05:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:12,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343537041] [2024-11-09 01:05:12,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:12,441 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 01:05:12,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:12,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343537041] [2024-11-09 01:05:12,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343537041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729503845] [2024-11-09 01:05:12,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:05:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:12,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:12,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 01:05:12,534 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 01:05:12,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:05:12,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:05:12,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:12,556 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 01:05:12,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:12,596 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 01:05:12,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729503845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:12,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1619302188] [2024-11-09 01:05:12,600 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:12,601 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:12,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:12,601 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:12,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:13,173 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:13,228 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:18,503 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1093#(and (<= 1 |#StackHeapBarrier|) (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_sum_~ret~0_50 Int)) (= (mod v_sum_~ret~0_50 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_16| 4294967296))) (exists ((|v_#memory_int_34| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_34| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_34| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_50 Int)) (= (mod v_sum_~ret~0_50 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_16|)) (exists ((|v_#memory_int_34| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_34| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_34| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |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)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:18,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:18,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 01:05:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370645400] [2024-11-09 01:05:18,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:18,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:05:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:05:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=448, Unknown=6, NotChecked=0, Total=552 [2024-11-09 01:05:18,507 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 01:05:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:18,582 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-11-09 01:05:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:05:18,583 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 01:05:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:18,584 INFO L225 Difference]: With dead ends: 57 [2024-11-09 01:05:18,584 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 01:05:18,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=98, Invalid=448, Unknown=6, NotChecked=0, Total=552 [2024-11-09 01:05:18,586 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:18,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 102 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:05:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 01:05:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 01:05:18,597 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 01:05:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-09 01:05:18,599 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 41 [2024-11-09 01:05:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:18,601 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-09 01:05:18,602 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 01:05:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-09 01:05:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 01:05:18,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:18,607 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 01:05:18,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 01:05:18,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:18,808 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:18,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash -380725515, now seen corresponding path program 3 times [2024-11-09 01:05:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872651127] [2024-11-09 01:05:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:18,996 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 01:05:18,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:18,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872651127] [2024-11-09 01:05:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872651127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:18,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792765892] [2024-11-09 01:05:18,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:05:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:19,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:19,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 01:05:19,118 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:05:19,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:05:19,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:05:19,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:19,193 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 01:05:19,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:19,323 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 01:05:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792765892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877384243] [2024-11-09 01:05:19,326 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:19,327 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:19,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:19,327 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:19,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:19,799 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:19,854 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:23,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1608#(and (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)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 2147483648)) (or (and (exists ((|v_#memory_int_49| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_81 Int)) (= (mod v_sum_~ret~0_81 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_18| 4294967296)))) (and (exists ((v_sum_~ret~0_81 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_18| (mod v_sum_~ret~0_81 4294967296))) (exists ((|v_#memory_int_49| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_49| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |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))) (<= 1 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:23,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:23,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:23,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2024-11-09 01:05:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60182569] [2024-11-09 01:05:23,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:23,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 01:05:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 01:05:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=776, Unknown=5, NotChecked=0, Total=930 [2024-11-09 01:05:23,058 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 01:05:23,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:23,197 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2024-11-09 01:05:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 01:05:23,198 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 01:05:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:23,200 INFO L225 Difference]: With dead ends: 78 [2024-11-09 01:05:23,200 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 01:05:23,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=149, Invalid=776, Unknown=5, NotChecked=0, Total=930 [2024-11-09 01:05:23,202 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:23,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:05:23,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 01:05:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 01:05:23,216 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 01:05:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-11-09 01:05:23,217 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 59 [2024-11-09 01:05:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:23,218 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-11-09 01:05:23,220 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 01:05:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-11-09 01:05:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 01:05:23,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:23,223 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 01:05:23,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 01:05:23,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:23,426 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:23,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1068119096, now seen corresponding path program 4 times [2024-11-09 01:05:23,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957747678] [2024-11-09 01:05:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:23,822 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 01:05:23,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957747678] [2024-11-09 01:05:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957747678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092582279] [2024-11-09 01:05:23,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:05:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:23,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:23,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:23,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:05:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:23,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 01:05:23,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:24,023 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 01:05:24,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:24,343 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 01:05:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092582279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [821672793] [2024-11-09 01:05:24,346 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:24,346 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:24,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:24,347 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:24,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:24,736 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:24,781 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:30,110 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2271#(and (<= 1 |#StackHeapBarrier|) (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) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 2147483648)) (or (and (exists ((|v_#memory_int_71| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_71| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_71| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_112 Int)) (= (mod v_sum_~ret~0_112 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_20| 4294967296)))) (and (exists ((|v_#memory_int_71| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_71| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_71| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_112 Int)) (= (mod v_sum_~ret~0_112 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_20|)))) (<= 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|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:30,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:30,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:30,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2024-11-09 01:05:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151251462] [2024-11-09 01:05:30,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:30,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 01:05:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 01:05:30,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=1339, Unknown=5, NotChecked=0, Total=1722 [2024-11-09 01:05:30,114 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 01:05:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:30,242 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2024-11-09 01:05:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:05:30,243 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 01:05:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:30,244 INFO L225 Difference]: With dead ends: 104 [2024-11-09 01:05:30,244 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 01:05:30,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=378, Invalid=1339, Unknown=5, NotChecked=0, Total=1722 [2024-11-09 01:05:30,247 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:30,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 82 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:05:30,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 01:05:30,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-09 01:05:30,255 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 01:05:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2024-11-09 01:05:30,256 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 73 [2024-11-09 01:05:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:30,257 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2024-11-09 01:05:30,257 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 01:05:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2024-11-09 01:05:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 01:05:30,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:30,259 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 01:05:30,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 01:05:30,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:30,460 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:30,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash -128767244, now seen corresponding path program 5 times [2024-11-09 01:05:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:30,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698868840] [2024-11-09 01:05:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:31,498 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 01:05:31,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698868840] [2024-11-09 01:05:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698868840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:31,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868696255] [2024-11-09 01:05:31,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:05:31,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:31,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:31,502 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:31,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 01:05:31,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 01:05:31,627 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:05:31,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:05:31,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:31,714 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 01:05:31,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:31,803 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 01:05:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868696255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1510581415] [2024-11-09 01:05:31,808 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:31,808 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:31,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:31,809 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:31,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:32,226 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:32,279 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:33,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3159#(and (<= 1 |#StackHeapBarrier|) (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_sum_~ret~0_143 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_22| (mod v_sum_~ret~0_143 4294967296))) (exists ((|v_#memory_int_82| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_143 Int)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_22| 4294967296) (mod v_sum_~ret~0_143 4294967296))) (exists ((|v_#memory_int_82| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_82| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |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|))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:34,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:34,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2024-11-09 01:05:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514715522] [2024-11-09 01:05:34,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:34,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 01:05:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 01:05:34,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1920, Unknown=25, NotChecked=0, Total=2352 [2024-11-09 01:05:34,003 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 01:05:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:34,170 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-09 01:05:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 01:05:34,171 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 01:05:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:34,172 INFO L225 Difference]: With dead ends: 114 [2024-11-09 01:05:34,172 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 01:05:34,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=407, Invalid=1920, Unknown=25, NotChecked=0, Total=2352 [2024-11-09 01:05:34,174 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:34,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:05:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 01:05:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-11-09 01:05:34,182 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 01:05:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-09 01:05:34,183 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 97 [2024-11-09 01:05:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:34,183 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-09 01:05:34,184 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 01:05:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-09 01:05:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 01:05:34,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:34,186 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 01:05:34,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 01:05:34,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:34,386 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:34,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash 90315981, now seen corresponding path program 6 times [2024-11-09 01:05:34,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:34,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463722982] [2024-11-09 01:05:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:34,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:35,510 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 01:05:35,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463722982] [2024-11-09 01:05:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463722982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617258155] [2024-11-09 01:05:35,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:05:35,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:35,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:35,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:35,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 01:05:35,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:05:35,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:05:35,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 01:05:35,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:35,814 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 01:05:35,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:36,914 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 01:05:36,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617258155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:36,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [900599793] [2024-11-09 01:05:36,917 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:36,917 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:36,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:36,918 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:36,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:37,340 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:37,388 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:42,957 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4157#(and (<= 1 |#StackHeapBarrier|) (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_#memory_int_121| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_121| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_121| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_174 Int)) (= (mod v_sum_~ret~0_174 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_24|))) (and (exists ((|v_#memory_int_121| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_121| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_121| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_174 Int)) (= (mod v_sum_~ret~0_174 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_24| 4294967296))))) (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)))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:05:42,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:42,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:42,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2024-11-09 01:05:42,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910053630] [2024-11-09 01:05:42,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:42,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 01:05:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:42,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 01:05:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1352, Invalid=3198, Unknown=6, NotChecked=0, Total=4556 [2024-11-09 01:05:42,962 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 51 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 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 01:05:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:43,212 INFO L93 Difference]: Finished difference Result 170 states and 202 transitions. [2024-11-09 01:05:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 01:05:43,213 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 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 01:05:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:43,214 INFO L225 Difference]: With dead ends: 170 [2024-11-09 01:05:43,215 INFO L226 Difference]: Without dead ends: 134 [2024-11-09 01:05:43,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1352, Invalid=3198, Unknown=6, NotChecked=0, Total=4556 [2024-11-09 01:05:43,217 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:43,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:05:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-09 01:05:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-09 01:05:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0232558139534884) internal successors, (132), 129 states have internal predecessors, (132), 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 01:05:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2024-11-09 01:05:43,230 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 107 [2024-11-09 01:05:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:43,230 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2024-11-09 01:05:43,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 51 states have internal predecessors, (119), 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 01:05:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2024-11-09 01:05:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-09 01:05:43,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:43,233 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 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 01:05:43,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 01:05:43,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:43,437 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:43,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2060813258, now seen corresponding path program 7 times [2024-11-09 01:05:43,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:43,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429330213] [2024-11-09 01:05:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:43,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 01:05:46,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429330213] [2024-11-09 01:05:46,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429330213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:46,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865109001] [2024-11-09 01:05:46,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:05:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:46,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:46,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 01:05:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:46,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 01:05:46,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 01:05:46,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 01:05:48,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865109001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:48,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [462344472] [2024-11-09 01:05:48,856 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:48,856 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:48,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:48,857 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:48,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:49,138 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:49,180 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:05:53,389 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5626#(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_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)) (or (and (exists ((v_sum_~ret~0_205 Int)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_26| 4294967296) (mod v_sum_~ret~0_205 4294967296))) (exists ((|v_#memory_int_185| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_185| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_185| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_205 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_26| (mod v_sum_~ret~0_205 4294967296))) (exists ((|v_#memory_int_185| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_185| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_185| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= 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))))' at error location [2024-11-09 01:05:53,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:05:53,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:05:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 63 [2024-11-09 01:05:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021748128] [2024-11-09 01:05:53,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:05:53,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 01:05:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:05:53,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 01:05:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=4284, Unknown=5, NotChecked=0, Total=6320 [2024-11-09 01:05:53,394 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 63 states have internal predecessors, (145), 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 01:05:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:05:53,685 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2024-11-09 01:05:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 01:05:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 63 states have internal predecessors, (145), 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 157 [2024-11-09 01:05:53,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:05:53,687 INFO L225 Difference]: With dead ends: 194 [2024-11-09 01:05:53,688 INFO L226 Difference]: Without dead ends: 158 [2024-11-09 01:05:53,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 403 SyntacticMatches, 39 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2712 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2031, Invalid=4284, Unknown=5, NotChecked=0, Total=6320 [2024-11-09 01:05:53,691 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:05:53,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 135 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:05:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-09 01:05:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-09 01:05:53,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0196078431372548) internal successors, (156), 153 states have internal predecessors, (156), 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 01:05:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 162 transitions. [2024-11-09 01:05:53,749 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 162 transitions. Word has length 157 [2024-11-09 01:05:53,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:05:53,750 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 162 transitions. [2024-11-09 01:05:53,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.3015873015873014) internal successors, (145), 63 states have internal predecessors, (145), 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 01:05:53,750 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 162 transitions. [2024-11-09 01:05:53,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-09 01:05:53,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:05:53,760 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 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 01:05:53,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 01:05:53,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 01:05:53,962 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:05:53,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:05:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1381491846, now seen corresponding path program 8 times [2024-11-09 01:05:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:05:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762559253] [2024-11-09 01:05:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:05:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:05:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:05:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 3714 trivial. 0 not checked. [2024-11-09 01:05:54,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:05:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762559253] [2024-11-09 01:05:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762559253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:05:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805638288] [2024-11-09 01:05:54,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:05:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:05:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:05:54,441 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:05:54,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 01:05:54,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 01:05:54,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:05:54,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:05:54,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:05:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 3714 trivial. 0 not checked. [2024-11-09 01:05:54,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:05:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 86 proven. 16 refuted. 0 times theorem prover too weak. 3714 trivial. 0 not checked. [2024-11-09 01:05:54,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805638288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:05:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1965484070] [2024-11-09 01:05:54,814 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:05:54,814 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:05:54,814 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:05:54,814 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:05:54,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:05:55,154 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:05:55,195 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:04,202 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7261#(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_28| Int) (|v_ULTIMATE.start_main_~ret2~0#1_26| 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_sum_~ret~0_241 Int)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_28| 4294967296) (mod v_sum_~ret~0_241 4294967296))) (exists ((|v_#memory_int_193| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_193| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_193| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_241 Int)) (= (mod v_sum_~ret~0_241 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_28|)) (exists ((|v_#memory_int_193| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_193| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_193| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |v_ULTIMATE.start_main_~ret5~0#1_28| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_25| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_26| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_25| 2147483648)) (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_26| |v_ULTIMATE.start_main_~ret~1#1_25|))))))' at error location [2024-11-09 01:06:04,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:04,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:04,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 01:06:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361537684] [2024-11-09 01:06:04,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:04,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 01:06:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 01:06:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=708, Unknown=7, NotChecked=0, Total=870 [2024-11-09 01:06:04,204 INFO L87 Difference]: Start difference. First operand 158 states and 162 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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 01:06:04,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:04,252 INFO L93 Difference]: Finished difference Result 204 states and 219 transitions. [2024-11-09 01:06:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 01:06:04,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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 181 [2024-11-09 01:06:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:04,255 INFO L225 Difference]: With dead ends: 204 [2024-11-09 01:06:04,255 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 01:06:04,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=155, Invalid=708, Unknown=7, NotChecked=0, Total=870 [2024-11-09 01:06:04,257 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:04,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:06:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 01:06:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-09 01:06:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 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 01:06:04,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2024-11-09 01:06:04,280 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 181 [2024-11-09 01:06:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:04,284 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2024-11-09 01:06:04,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 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 01:06:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2024-11-09 01:06:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-09 01:06:04,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:04,288 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 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 01:06:04,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 01:06:04,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:04,489 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:04,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash 68314336, now seen corresponding path program 9 times [2024-11-09 01:06:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663716393] [2024-11-09 01:06:04,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:04,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 4062 trivial. 0 not checked. [2024-11-09 01:06:05,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:05,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663716393] [2024-11-09 01:06:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663716393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:05,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334583683] [2024-11-09 01:06:05,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:06:05,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:05,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:05,118 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:05,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 01:06:05,444 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:06:05,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:06:05,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 01:06:05,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:06:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 444 proven. 100 refuted. 0 times theorem prover too weak. 4064 trivial. 0 not checked. [2024-11-09 01:06:05,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:06:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 0 proven. 546 refuted. 0 times theorem prover too weak. 4062 trivial. 0 not checked. [2024-11-09 01:06:05,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334583683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:06:05,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258145393] [2024-11-09 01:06:05,728 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:06:05,729 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:06:05,729 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:06:05,729 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:06:05,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:06:06,047 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:06:06,082 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:11,297 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9157#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret5~0#1_30| Int) (|v_ULTIMATE.start_main_~ret2~0#1_28| Int) (|v_ULTIMATE.start_main_~ret~1#1_27| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_27| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_28| |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_~ret5~0#1_30| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_28| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_27| 2147483647) (or (and (exists ((|v_#memory_int_209| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_209| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_209| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_301 Int)) (= (mod v_sum_~ret~0_301 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_30|))) (and (exists ((|v_#memory_int_209| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_209| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_209| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_301 Int)) (= (mod v_sum_~ret~0_301 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_30| 4294967296))))))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:06:11,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:11,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 01:06:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120181909] [2024-11-09 01:06:11,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:11,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 01:06:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 01:06:11,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=1339, Unknown=5, NotChecked=0, Total=1722 [2024-11-09 01:06:11,300 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 01:06:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:11,384 INFO L93 Difference]: Finished difference Result 240 states and 261 transitions. [2024-11-09 01:06:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 01:06:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 217 [2024-11-09 01:06:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:11,388 INFO L225 Difference]: With dead ends: 240 [2024-11-09 01:06:11,388 INFO L226 Difference]: Without dead ends: 194 [2024-11-09 01:06:11,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 621 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=378, Invalid=1339, Unknown=5, NotChecked=0, Total=1722 [2024-11-09 01:06:11,390 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:11,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:06:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-09 01:06:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-09 01:06:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0158730158730158) internal successors, (192), 189 states have internal predecessors, (192), 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 01:06:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2024-11-09 01:06:11,403 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 217 [2024-11-09 01:06:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:11,404 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 198 transitions. [2024-11-09 01:06:11,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 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 01:06:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 198 transitions. [2024-11-09 01:06:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-09 01:06:11,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:11,410 INFO L215 NwaCegarLoop]: trace histogram [66, 66, 60, 60, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:06:11,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 01:06:11,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 01:06:11,610 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:11,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1017809260, now seen corresponding path program 10 times [2024-11-09 01:06:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875509072] [2024-11-09 01:06:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8136 backedges. 0 proven. 2514 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2024-11-09 01:06:13,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875509072] [2024-11-09 01:06:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875509072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409518745] [2024-11-09 01:06:13,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:06:13,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:13,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:13,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:13,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 01:06:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:13,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 01:06:13,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:06:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 8136 backedges. 2028 proven. 484 refuted. 0 times theorem prover too weak. 5624 trivial. 0 not checked. [2024-11-09 01:06:13,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:06:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8136 backedges. 0 proven. 2514 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2024-11-09 01:06:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409518745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:06:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920260687] [2024-11-09 01:06:14,686 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:06:14,686 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:06:14,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:06:14,687 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:06:14,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:06:15,027 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:06:15,061 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:20,583 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11599#(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_30| Int)) (and (or (and (exists ((|v_#memory_int_225| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_225| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_225| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_409 Int)) (= (mod v_sum_~ret~0_409 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 4294967296)))) (and (exists ((|v_#memory_int_225| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_225| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_225| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_409 Int)) (= (mod v_sum_~ret~0_409 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_32|)))) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_30| |v_ULTIMATE.start_main_~ret~1#1_29|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_29| |v_ULTIMATE.start_main_~ret5~0#1_32|))) (<= |v_ULTIMATE.start_main_~ret~1#1_29| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483648)) (<= |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_30| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_29| 2147483648)))))' at error location [2024-11-09 01:06:20,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:20,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:20,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 01:06:20,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800065973] [2024-11-09 01:06:20,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:20,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 01:06:20,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:20,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 01:06:20,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1252, Invalid=3032, Unknown=6, NotChecked=0, Total=4290 [2024-11-09 01:06:20,587 INFO L87 Difference]: Start difference. First operand 194 states and 198 transitions. Second operand has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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 01:06:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:20,742 INFO L93 Difference]: Finished difference Result 312 states and 345 transitions. [2024-11-09 01:06:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 01:06:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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 289 [2024-11-09 01:06:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:20,745 INFO L225 Difference]: With dead ends: 312 [2024-11-09 01:06:20,745 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 01:06:20,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 825 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1252, Invalid=3032, Unknown=6, NotChecked=0, Total=4290 [2024-11-09 01:06:20,747 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:20,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:06:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 01:06:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-09 01:06:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 237 states have (on average 1.0126582278481013) internal successors, (240), 237 states have internal predecessors, (240), 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 01:06:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 246 transitions. [2024-11-09 01:06:20,759 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 246 transitions. Word has length 289 [2024-11-09 01:06:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:20,760 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 246 transitions. [2024-11-09 01:06:20,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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 01:06:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 246 transitions. [2024-11-09 01:06:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-09 01:06:20,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:20,763 INFO L215 NwaCegarLoop]: trace histogram [138, 138, 60, 60, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:06:20,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 01:06:20,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 01:06:20,967 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:20,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1433001468, now seen corresponding path program 11 times [2024-11-09 01:06:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:20,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542857321] [2024-11-09 01:06:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:20,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22968 backedges. 0 proven. 10770 refuted. 0 times theorem prover too weak. 12198 trivial. 0 not checked. [2024-11-09 01:06:25,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:25,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542857321] [2024-11-09 01:06:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542857321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497120110] [2024-11-09 01:06:25,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:06:25,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:25,089 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:25,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 01:06:25,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 01:06:25,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:06:25,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:06:25,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:06:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22968 backedges. 8656 proven. 36 refuted. 0 times theorem prover too weak. 14276 trivial. 0 not checked. [2024-11-09 01:06:25,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:06:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22968 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 22932 trivial. 0 not checked. [2024-11-09 01:06:26,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497120110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:06:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1301295466] [2024-11-09 01:06:26,061 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:06:26,064 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:06:26,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:06:26,065 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:06:26,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:06:26,401 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:06:26,446 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:36,450 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15099#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~ret~1#1_30| Int) (|v_ULTIMATE.start_main_~ret2~0#1_32| Int) (|v_ULTIMATE.start_main_~ret5~0#1_34| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483647) (<= |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483647) (or (and (exists ((|v_#memory_int_240| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_240| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_240| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_566 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_34| (mod v_sum_~ret~0_566 4294967296)))) (and (exists ((|v_#memory_int_240| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_240| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_240| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_566 Int)) (= (mod v_sum_~ret~0_566 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 4294967296))))) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_30| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_32| 2147483648)) (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_32| |v_ULTIMATE.start_main_~ret~1#1_30|))) (<= |v_ULTIMATE.start_main_~ret~1#1_30| 2147483647))) (<= 2 |ULTIMATE.start_main_~#x~0#1.base|) (= |ULTIMATE.start_main_~#x~0#1.offset| 0))' at error location [2024-11-09 01:06:36,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:36,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 9, 9] total 63 [2024-11-09 01:06:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779121260] [2024-11-09 01:06:36,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:36,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 01:06:36,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 01:06:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4940, Unknown=8, NotChecked=0, Total=6320 [2024-11-09 01:06:36,456 INFO L87 Difference]: Start difference. First operand 242 states and 246 transitions. Second operand has 63 states, 63 states have (on average 2.3333333333333335) internal successors, (147), 63 states have internal predecessors, (147), 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 01:06:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:36,818 INFO L93 Difference]: Finished difference Result 379 states and 397 transitions. [2024-11-09 01:06:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-09 01:06:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.3333333333333335) internal successors, (147), 63 states have internal predecessors, (147), 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 433 [2024-11-09 01:06:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:36,821 INFO L225 Difference]: With dead ends: 379 [2024-11-09 01:06:36,821 INFO L226 Difference]: Without dead ends: 261 [2024-11-09 01:06:36,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1267 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=1372, Invalid=4940, Unknown=8, NotChecked=0, Total=6320 [2024-11-09 01:06:36,825 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:36,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 252 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:06:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-09 01:06:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2024-11-09 01:06:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.011764705882353) internal successors, (258), 255 states have internal predecessors, (258), 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 01:06:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 264 transitions. [2024-11-09 01:06:36,844 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 264 transitions. Word has length 433 [2024-11-09 01:06:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:36,845 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 264 transitions. [2024-11-09 01:06:36,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.3333333333333335) internal successors, (147), 63 states have internal predecessors, (147), 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 01:06:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 264 transitions. [2024-11-09 01:06:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-09 01:06:36,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:36,849 INFO L215 NwaCegarLoop]: trace histogram [141, 141, 60, 60, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:06:36,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 01:06:37,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 01:06:37,050 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:37,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2128846803, now seen corresponding path program 12 times [2024-11-09 01:06:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:37,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655488225] [2024-11-09 01:06:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 23971 backedges. 0 proven. 11239 refuted. 0 times theorem prover too weak. 12732 trivial. 0 not checked. [2024-11-09 01:06:40,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655488225] [2024-11-09 01:06:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655488225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404413590] [2024-11-09 01:06:40,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 01:06:40,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:40,711 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:40,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 01:06:41,210 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 01:06:41,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:06:41,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-09 01:06:41,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:06:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 23971 backedges. 9028 proven. 2209 refuted. 0 times theorem prover too weak. 12734 trivial. 0 not checked. [2024-11-09 01:06:41,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:06:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 23971 backedges. 0 proven. 11239 refuted. 0 times theorem prover too weak. 12732 trivial. 0 not checked. [2024-11-09 01:06:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404413590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:06:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638255231] [2024-11-09 01:06:43,360 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:06:43,360 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:06:43,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:06:43,361 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:06:43,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:06:43,618 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:06:43,647 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:45,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18858#(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_32| Int) (|v_ULTIMATE.start_main_~ret2~0#1_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_36| Int)) (and (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_34| |v_ULTIMATE.start_main_~ret~1#1_32|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_32| |v_ULTIMATE.start_main_~ret5~0#1_36|))) (<= |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_32| 2147483648)) (or (and (exists ((v_sum_~ret~0_774 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_36| (mod v_sum_~ret~0_774 4294967296))) (exists ((|v_#memory_int_264| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_264| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_264| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((v_sum_~ret~0_774 Int)) (= (mod v_sum_~ret~0_774 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 4294967296))) (exists ((|v_#memory_int_264| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_264| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_264| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))))) (<= |v_ULTIMATE.start_main_~ret2~0#1_34| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_32| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_36| 2147483648)))))' at error location [2024-11-09 01:06:45,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:45,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 63 [2024-11-09 01:06:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283919038] [2024-11-09 01:06:45,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:45,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 01:06:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 01:06:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2031, Invalid=4285, Unknown=4, NotChecked=0, Total=6320 [2024-11-09 01:06:45,232 INFO L87 Difference]: Start difference. First operand 260 states and 264 transitions. Second operand has 63 states, 63 states have (on average 2.365079365079365) internal successors, (149), 63 states have internal predecessors, (149), 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 01:06:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:45,440 INFO L93 Difference]: Finished difference Result 422 states and 444 transitions. [2024-11-09 01:06:45,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-09 01:06:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.365079365079365) internal successors, (149), 63 states have internal predecessors, (149), 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 455 [2024-11-09 01:06:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:45,443 INFO L225 Difference]: With dead ends: 422 [2024-11-09 01:06:45,443 INFO L226 Difference]: Without dead ends: 286 [2024-11-09 01:06:45,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1413 GetRequests, 1298 SyntacticMatches, 37 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2031, Invalid=4285, Unknown=4, NotChecked=0, Total=6320 [2024-11-09 01:06:45,448 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:45,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:06:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-09 01:06:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-09 01:06:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.01067615658363) internal successors, (284), 281 states have internal predecessors, (284), 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 01:06:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 290 transitions. [2024-11-09 01:06:45,462 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 290 transitions. Word has length 455 [2024-11-09 01:06:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:45,462 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 290 transitions. [2024-11-09 01:06:45,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.365079365079365) internal successors, (149), 63 states have internal predecessors, (149), 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 01:06:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 290 transitions. [2024-11-09 01:06:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-09 01:06:45,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:45,467 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 60, 60, 14, 14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:06:45,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 01:06:45,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 01:06:45,668 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:45,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:45,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1999196150, now seen corresponding path program 13 times [2024-11-09 01:06:45,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:45,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434050597] [2024-11-09 01:06:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 36568 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36372 trivial. 0 not checked. [2024-11-09 01:06:46,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:46,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434050597] [2024-11-09 01:06:46,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434050597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:46,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357730693] [2024-11-09 01:06:46,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 01:06:46,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:46,787 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:46,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 01:06:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:47,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 1913 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 01:06:47,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:06:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 36568 backedges. 14648 proven. 196 refuted. 0 times theorem prover too weak. 21724 trivial. 0 not checked. [2024-11-09 01:06:47,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:06:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 36568 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36372 trivial. 0 not checked. [2024-11-09 01:06:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357730693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:06:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [473552851] [2024-11-09 01:06:47,915 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:06:47,916 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:06:47,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:06:47,916 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:06:47,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:06:48,196 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:06:48,233 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:06:51,328 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23159#(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_36| Int) (|v_ULTIMATE.start_main_~ret~1#1_33| Int) (|v_ULTIMATE.start_main_~ret5~0#1_38| Int)) (and (<= |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_33| 2147483648)) (<= |v_ULTIMATE.start_main_~ret~1#1_33| 2147483647) (or (and (exists ((|v_#memory_int_287| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_287| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_287| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_973 Int)) (= (mod v_sum_~ret~0_973 4294967296) |v_ULTIMATE.start_main_~ret5~0#1_38|))) (and (exists ((|v_#memory_int_287| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_287| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_287| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_973 Int)) (= (mod v_sum_~ret~0_973 4294967296) (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 4294967296))))) (<= |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_38| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_36| 2147483648)) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_36| |v_ULTIMATE.start_main_~ret~1#1_33|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_33| |v_ULTIMATE.start_main_~ret5~0#1_38|))))))' at error location [2024-11-09 01:06:51,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:06:51,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:06:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-09 01:06:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856122397] [2024-11-09 01:06:51,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:06:51,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 01:06:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:06:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 01:06:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=1838, Unknown=5, NotChecked=0, Total=2450 [2024-11-09 01:06:51,332 INFO L87 Difference]: Start difference. First operand 286 states and 290 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 01:06:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:06:51,489 INFO L93 Difference]: Finished difference Result 448 states and 468 transitions. [2024-11-09 01:06:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 01:06:51,491 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 533 [2024-11-09 01:06:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:06:51,494 INFO L225 Difference]: With dead ends: 448 [2024-11-09 01:06:51,494 INFO L226 Difference]: Without dead ends: 318 [2024-11-09 01:06:51,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1565 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=607, Invalid=1838, Unknown=5, NotChecked=0, Total=2450 [2024-11-09 01:06:51,497 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:06:51,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 93 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:06:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-09 01:06:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2024-11-09 01:06:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.0095846645367412) internal successors, (316), 313 states have internal predecessors, (316), 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 01:06:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 322 transitions. [2024-11-09 01:06:51,513 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 322 transitions. Word has length 533 [2024-11-09 01:06:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:06:51,515 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 322 transitions. [2024-11-09 01:06:51,515 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 01:06:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 322 transitions. [2024-11-09 01:06:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2024-11-09 01:06:51,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:06:51,520 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 60, 60, 30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:06:51,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 01:06:51,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 01:06:51,721 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:06:51,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:06:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1184824390, now seen corresponding path program 14 times [2024-11-09 01:06:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:06:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025043463] [2024-11-09 01:06:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:06:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:06:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:06:54,257 INFO L134 CoverageAnalysis]: Checked inductivity of 37272 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 36372 trivial. 0 not checked. [2024-11-09 01:06:54,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 01:06:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025043463] [2024-11-09 01:06:54,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025043463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:06:54,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502638434] [2024-11-09 01:06:54,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:06:54,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:06:54,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:06:54,260 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:06:54,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 01:07:10,901 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-09 01:07:10,901 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:07:10,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 01:07:10,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:07:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 37272 backedges. 14648 proven. 900 refuted. 0 times theorem prover too weak. 21724 trivial. 0 not checked. [2024-11-09 01:07:11,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:07:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 37272 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 36372 trivial. 0 not checked. [2024-11-09 01:07:12,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502638434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:07:12,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988082924] [2024-11-09 01:07:12,365 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2024-11-09 01:07:12,365 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 01:07:12,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 01:07:12,365 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 01:07:12,366 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 01:07:12,624 INFO L197 IcfgInterpreter]: Interpreting procedure sum with input of size 10 for LOIs [2024-11-09 01:07:12,665 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 01:07:18,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27768#(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_34| Int) (|v_ULTIMATE.start_main_~ret5~0#1_40| Int) (|v_ULTIMATE.start_main_~ret2~0#1_38| Int)) (and (<= 0 (+ |v_ULTIMATE.start_main_~ret2~0#1_38| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 2147483648)) (<= 0 (+ |v_ULTIMATE.start_main_~ret~1#1_34| 2147483648)) (<= |v_ULTIMATE.start_main_~ret5~0#1_40| 2147483647) (<= |v_ULTIMATE.start_main_~ret2~0#1_38| 2147483647) (<= |v_ULTIMATE.start_main_~ret~1#1_34| 2147483647) (or (and (exists ((v_sum_~ret~0_1172 Int)) (= |v_ULTIMATE.start_main_~ret5~0#1_40| (mod v_sum_~ret~0_1172 4294967296))) (exists ((|v_#memory_int_326| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_326| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_326| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236)))))) (and (exists ((|v_#memory_int_326| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_326| |ULTIMATE.start_main_~#x~0#1.base| (store (select |v_#memory_int_326| |ULTIMATE.start_main_~#x~0#1.base|) 236 (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) 236))))) (exists ((v_sum_~ret~0_1172 Int)) (= (+ |v_ULTIMATE.start_main_~ret5~0#1_40| 4294967296) (mod v_sum_~ret~0_1172 4294967296))))) (or (not (= |v_ULTIMATE.start_main_~ret2~0#1_38| |v_ULTIMATE.start_main_~ret~1#1_34|)) (not (= |v_ULTIMATE.start_main_~ret~1#1_34| |v_ULTIMATE.start_main_~ret5~0#1_40|))))))' at error location [2024-11-09 01:07:18,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 01:07:18,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:07:18,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 62 [2024-11-09 01:07:18,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138504140] [2024-11-09 01:07:18,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 01:07:18,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 01:07:18,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 01:07:18,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 01:07:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1969, Invalid=4323, Unknown=28, NotChecked=0, Total=6320 [2024-11-09 01:07:18,030 INFO L87 Difference]: Start difference. First operand 318 states and 322 transitions. Second operand has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 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 01:07:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:07:18,252 INFO L93 Difference]: Finished difference Result 506 states and 539 transitions. [2024-11-09 01:07:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-09 01:07:18,253 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 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 565 [2024-11-09 01:07:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:07:18,256 INFO L225 Difference]: With dead ends: 506 [2024-11-09 01:07:18,256 INFO L226 Difference]: Without dead ends: 376 [2024-11-09 01:07:18,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1726 GetRequests, 1645 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1969, Invalid=4323, Unknown=28, NotChecked=0, Total=6320 [2024-11-09 01:07:18,259 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:07:18,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 147 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 01:07:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-09 01:07:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-11-09 01:07:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 371 states have (on average 1.0080862533692723) internal successors, (374), 371 states have internal predecessors, (374), 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 01:07:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 380 transitions. [2024-11-09 01:07:18,274 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 380 transitions. Word has length 565 [2024-11-09 01:07:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:07:18,275 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 380 transitions. [2024-11-09 01:07:18,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.306451612903226) internal successors, (143), 62 states have internal predecessors, (143), 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 01:07:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 380 transitions. [2024-11-09 01:07:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-09 01:07:18,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:07:18,280 INFO L215 NwaCegarLoop]: trace histogram [180, 180, 60, 60, 59, 59, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:07:18,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 01:07:18,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b806cb5b-8d97-4bad-8c58-41ea94cdecc6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 01:07:18,481 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:07:18,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:07:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash -486417673, now seen corresponding path program 15 times [2024-11-09 01:07:18,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:07:18,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053981755] [2024-11-09 01:07:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:07:18,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:09:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat