./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-multidimensional/min-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/min-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:11:38,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:11:38,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:11:38,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:11:38,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:11:38,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:11:38,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:11:38,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:11:38,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:11:38,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:11:38,918 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:11:38,918 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:11:38,919 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:11:38,919 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:11:38,920 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:11:38,920 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:11:38,921 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:11:38,921 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:11:38,922 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:11:38,923 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:11:38,923 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:11:38,924 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:11:38,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:11:38,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:11:38,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:11:38,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:11:38,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:11:38,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:11:38,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:11:38,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:11:38,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:11:38,929 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:11:38,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:11:38,930 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:11:38,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:11:38,931 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:11:38,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:11:38,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:11:38,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:38,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:11:38,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:11:38,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:11:38,935 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:11:38,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:11:38,936 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:11:38,936 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:11:38,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:11:38,937 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_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2023-11-12 00:11:39,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:11:39,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:11:39,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:11:39,283 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:11:39,284 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:11:39,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/array-multidimensional/min-2-u.c [2023-11-12 00:11:42,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:11:42,585 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:11:42,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/sv-benchmarks/c/array-multidimensional/min-2-u.c [2023-11-12 00:11:42,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/data/6aa398afd/a29403eeb60d41e1b8ac5f98ce4dc6d5/FLAG15f342a07 [2023-11-12 00:11:42,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/data/6aa398afd/a29403eeb60d41e1b8ac5f98ce4dc6d5 [2023-11-12 00:11:42,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:11:42,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:11:42,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:42,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:11:42,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:11:42,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff771e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42, skipping insertion in model container [2023-11-12 00:11:42,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:11:42,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:42,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:11:42,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:11:42,871 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:11:42,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42 WrapperNode [2023-11-12 00:11:42,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:11:42,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:42,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:11:42,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:11:42,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,911 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-12 00:11:42,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:11:42,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:11:42,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:11:42,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:11:42,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:11:42,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:11:42,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:11:42,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:11:42,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (1/1) ... [2023-11-12 00:11:42,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:11:42,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:43,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:11:43,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:11:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:11:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:11:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:11:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:11:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:11:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:11:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:11:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:11:43,125 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:11:43,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:11:43,431 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:11:43,500 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:11:43,500 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:11:43,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:43 BoogieIcfgContainer [2023-11-12 00:11:43,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:11:43,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:11:43,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:11:43,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:11:43,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:11:42" (1/3) ... [2023-11-12 00:11:43,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151d65ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:43, skipping insertion in model container [2023-11-12 00:11:43,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:11:42" (2/3) ... [2023-11-12 00:11:43,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151d65ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:11:43, skipping insertion in model container [2023-11-12 00:11:43,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:43" (3/3) ... [2023-11-12 00:11:43,516 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2023-11-12 00:11:43,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:11:43,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-12 00:11:43,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:11:43,597 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@41025820, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:11:43,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-12 00:11:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:11:43,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:43,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:11:43,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:43,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 4628817, now seen corresponding path program 1 times [2023-11-12 00:11:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:43,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735478744] [2023-11-12 00:11:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:43,780 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:43,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304250606] [2023-11-12 00:11:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:43,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:43,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:43,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:11:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:43,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:43,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:43,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:43,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735478744] [2023-11-12 00:11:43,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:43,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304250606] [2023-11-12 00:11:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304250606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:43,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:43,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:43,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172356640] [2023-11-12 00:11:43,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:43,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:43,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:44,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,019 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:44,120 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-12 00:11:44,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:44,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:11:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:44,134 INFO L225 Difference]: With dead ends: 32 [2023-11-12 00:11:44,135 INFO L226 Difference]: Without dead ends: 28 [2023-11-12 00:11:44,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,144 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:44,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-12 00:11:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-12 00:11:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.736842105263158) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-12 00:11:44,190 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2023-11-12 00:11:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-12 00:11:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-12 00:11:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:11:44,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:44,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:11:44,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:44,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:11:44,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:44,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 4632544, now seen corresponding path program 1 times [2023-11-12 00:11:44,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:44,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041533452] [2023-11-12 00:11:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:44,409 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116301904] [2023-11-12 00:11:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:44,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:44,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:44,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:44,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:11:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:44,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:44,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:44,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:44,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041533452] [2023-11-12 00:11:44,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116301904] [2023-11-12 00:11:44,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116301904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:44,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:11:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2780247] [2023-11-12 00:11:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:44,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,514 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:44,573 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-11-12 00:11:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:11:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:44,576 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:11:44,577 INFO L226 Difference]: Without dead ends: 25 [2023-11-12 00:11:44,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,579 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:44,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:11:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-12 00:11:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-12 00:11:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-12 00:11:44,591 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2023-11-12 00:11:44,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:44,592 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-12 00:11:44,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-12 00:11:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:11:44,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:44,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:11:44,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:44,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:44,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:44,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 143493381, now seen corresponding path program 1 times [2023-11-12 00:11:44,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:44,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058385325] [2023-11-12 00:11:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:44,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:44,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903153012] [2023-11-12 00:11:44,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:44,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:44,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:44,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:44,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:11:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:44,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:44,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:44,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:44,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:44,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058385325] [2023-11-12 00:11:44,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:44,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903153012] [2023-11-12 00:11:44,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903153012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:44,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:44,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:11:44,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606752718] [2023-11-12 00:11:44,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:44,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:44,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,910 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:44,982 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-11-12 00:11:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:11:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:44,984 INFO L225 Difference]: With dead ends: 49 [2023-11-12 00:11:44,984 INFO L226 Difference]: Without dead ends: 46 [2023-11-12 00:11:44,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:44,986 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:44,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 24 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-12 00:11:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2023-11-12 00:11:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.5) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-12 00:11:45,001 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 5 [2023-11-12 00:11:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:45,001 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-12 00:11:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-12 00:11:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:11:45,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:45,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:11:45,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 00:11:45,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 00:11:45,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:45,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 143608925, now seen corresponding path program 1 times [2023-11-12 00:11:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:45,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592986497] [2023-11-12 00:11:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:45,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:45,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133333829] [2023-11-12 00:11:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:45,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:45,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:11:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:45,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:11:45,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:45,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:11:45,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592986497] [2023-11-12 00:11:45,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133333829] [2023-11-12 00:11:45,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133333829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:45,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:11:45,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:11:45,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682940557] [2023-11-12 00:11:45,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:45,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:11:45,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:45,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:11:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:45,283 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:45,349 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2023-11-12 00:11:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:11:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:11:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:45,353 INFO L225 Difference]: With dead ends: 67 [2023-11-12 00:11:45,354 INFO L226 Difference]: Without dead ends: 64 [2023-11-12 00:11:45,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:11:45,361 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:45,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 21 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-12 00:11:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-11-12 00:11:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2023-11-12 00:11:45,382 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 5 [2023-11-12 00:11:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:45,382 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2023-11-12 00:11:45,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2023-11-12 00:11:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:11:45,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:45,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-12 00:11:45,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:45,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-12 00:11:45,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:45,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1318903567, now seen corresponding path program 1 times [2023-11-12 00:11:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753382477] [2023-11-12 00:11:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:45,601 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:45,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979870511] [2023-11-12 00:11:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:45,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:45,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:11:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:45,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:45,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:45,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:11:45,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753382477] [2023-11-12 00:11:45,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979870511] [2023-11-12 00:11:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979870511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [572940384] [2023-11-12 00:11:45,765 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-12 00:11:45,765 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:45,769 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:45,776 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:45,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:46,579 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:46,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [572940384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:11:46,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-11-12 00:11:46,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125224076] [2023-11-12 00:11:46,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:11:46,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:11:46,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:46,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:11:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:11:46,758 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:47,000 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2023-11-12 00:11:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:11:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:11:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:47,002 INFO L225 Difference]: With dead ends: 114 [2023-11-12 00:11:47,002 INFO L226 Difference]: Without dead ends: 61 [2023-11-12 00:11:47,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:11:47,004 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:47,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-12 00:11:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-12 00:11:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-11-12 00:11:47,020 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 8 [2023-11-12 00:11:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-11-12 00:11:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-11-12 00:11:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:11:47,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:47,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:47,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:47,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:47,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:47,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1069662294, now seen corresponding path program 1 times [2023-11-12 00:11:47,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:47,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548924742] [2023-11-12 00:11:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:47,237 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:47,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855949620] [2023-11-12 00:11:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:47,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:47,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:47,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:47,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:11:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:47,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:11:47,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:11:47,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:11:47,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548924742] [2023-11-12 00:11:47,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855949620] [2023-11-12 00:11:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855949620] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1076320960] [2023-11-12 00:11:47,362 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:11:47,362 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:47,363 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:47,363 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:47,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:47,984 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:48,291 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '845#(and (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-12 00:11:48,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:11:48,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:48,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-12 00:11:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135484674] [2023-11-12 00:11:48,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:48,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:11:48,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:11:48,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:11:48,297 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:48,504 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2023-11-12 00:11:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:11:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-12 00:11:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:48,508 INFO L225 Difference]: With dead ends: 159 [2023-11-12 00:11:48,509 INFO L226 Difference]: Without dead ends: 106 [2023-11-12 00:11:48,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-12 00:11:48,511 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 87 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:48,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 19 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-12 00:11:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2023-11-12 00:11:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 102 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2023-11-12 00:11:48,545 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 12 [2023-11-12 00:11:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:48,545 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2023-11-12 00:11:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2023-11-12 00:11:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 00:11:48,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:48,548 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1] [2023-11-12 00:11:48,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:48,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:11:48,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:48,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2082836408, now seen corresponding path program 1 times [2023-11-12 00:11:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104091037] [2023-11-12 00:11:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:48,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:48,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291668919] [2023-11-12 00:11:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:48,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:48,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:48,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:48,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:11:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:48,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:11:48,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 00:11:48,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 00:11:49,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:49,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104091037] [2023-11-12 00:11:49,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291668919] [2023-11-12 00:11:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291668919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1632169423] [2023-11-12 00:11:49,046 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:11:49,046 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:49,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:49,047 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:49,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:49,513 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:49,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1374#(and (exists ((|v_#memory_int_39| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_39| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_39| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4)) (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))))))) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) 2147483648)) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= (+ |ULTIMATE.start_main_~j~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) 2147483647))' at error location [2023-11-12 00:11:49,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:11:49,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-12 00:11:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946972823] [2023-11-12 00:11:49,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 00:11:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 00:11:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:11:49,821 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:50,202 INFO L93 Difference]: Finished difference Result 311 states and 396 transitions. [2023-11-12 00:11:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:11:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 00:11:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:50,205 INFO L225 Difference]: With dead ends: 311 [2023-11-12 00:11:50,205 INFO L226 Difference]: Without dead ends: 223 [2023-11-12 00:11:50,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2023-11-12 00:11:50,207 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 256 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:50,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 46 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:11:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-12 00:11:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2023-11-12 00:11:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 205 states have (on average 1.1804878048780487) internal successors, (242), 210 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2023-11-12 00:11:50,230 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 27 [2023-11-12 00:11:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:50,230 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2023-11-12 00:11:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2023-11-12 00:11:50,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 00:11:50,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:50,233 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 1, 1, 1, 1, 1] [2023-11-12 00:11:50,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:50,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 00:11:50,439 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -844778452, now seen corresponding path program 2 times [2023-11-12 00:11:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360221589] [2023-11-12 00:11:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:50,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:50,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072039299] [2023-11-12 00:11:50,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:11:50,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:50,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:50,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:11:50,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:11:50,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:11:50,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:50,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-12 00:11:50,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-12 00:11:50,744 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360221589] [2023-11-12 00:11:50,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072039299] [2023-11-12 00:11:50,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072039299] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:50,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1978723114] [2023-11-12 00:11:50,748 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:11:50,748 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:50,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:50,749 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:50,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:51,173 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:51,492 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2410#(and (exists ((|v_#memory_int_60| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_60| |ULTIMATE.start_main_~#A~0#1.base| (store (select |v_#memory_int_60| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4)) (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))))))) (<= 0 (+ (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) 2147483648)) (<= 2147483647 |ULTIMATE.start_main_~j~0#1|) (<= (+ |ULTIMATE.start_main_~j~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#A~0#1.base|) (+ |ULTIMATE.start_main_~#A~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| (* |ULTIMATE.start_main_~n~0#1| 4)) (* |ULTIMATE.start_main_~j~0#1| 4))) 2147483647))' at error location [2023-11-12 00:11:51,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:11:51,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:51,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 00:11:51,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453026267] [2023-11-12 00:11:51,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:11:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:11:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:11:51,494 INFO L87 Difference]: Start difference. First operand 211 states and 242 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:51,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:51,583 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2023-11-12 00:11:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:11:51,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-12 00:11:51,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:51,585 INFO L225 Difference]: With dead ends: 211 [2023-11-12 00:11:51,586 INFO L226 Difference]: Without dead ends: 208 [2023-11-12 00:11:51,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:11:51,587 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:51,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:11:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-12 00:11:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-11-12 00:11:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 205 states have (on average 1.0585365853658537) internal successors, (217), 207 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2023-11-12 00:11:51,607 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 54 [2023-11-12 00:11:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:51,608 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2023-11-12 00:11:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2023-11-12 00:11:51,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-12 00:11:51,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:51,611 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1] [2023-11-12 00:11:51,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-12 00:11:51,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:51,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2096295136, now seen corresponding path program 2 times [2023-11-12 00:11:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140496732] [2023-11-12 00:11:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:51,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:51,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:51,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020871329] [2023-11-12 00:11:51,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:11:51,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:51,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:51,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:51,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:11:51,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:11:51,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:11:51,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:51,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:11:52,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-12 00:11:52,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140496732] [2023-11-12 00:11:52,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020871329] [2023-11-12 00:11:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020871329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [365935348] [2023-11-12 00:11:52,181 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-12 00:11:52,181 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:52,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:52,182 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:52,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:52,558 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:11:52,871 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3397#(and (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~j~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~0#1|))' at error location [2023-11-12 00:11:52,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:11:52,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:52,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 00:11:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952714125] [2023-11-12 00:11:52,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:52,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:11:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:52,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:11:52,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:11:52,876 INFO L87 Difference]: Start difference. First operand 208 states and 217 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:52,986 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2023-11-12 00:11:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:11:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-12 00:11:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:52,991 INFO L225 Difference]: With dead ends: 278 [2023-11-12 00:11:52,992 INFO L226 Difference]: Without dead ends: 275 [2023-11-12 00:11:52,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:11:52,995 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:52,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 16 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:11:52,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-12 00:11:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 242. [2023-11-12 00:11:53,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0541666666666667) internal successors, (253), 241 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 253 transitions. [2023-11-12 00:11:53,016 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 253 transitions. Word has length 69 [2023-11-12 00:11:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:53,017 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 253 transitions. [2023-11-12 00:11:53,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 253 transitions. [2023-11-12 00:11:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-12 00:11:53,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:53,023 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:53,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:53,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:53,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:53,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:53,230 INFO L85 PathProgramCache]: Analyzing trace with hash -895842911, now seen corresponding path program 1 times [2023-11-12 00:11:53,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:53,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127815199] [2023-11-12 00:11:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:53,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:53,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215400763] [2023-11-12 00:11:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:53,261 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:53,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 00:11:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:11:53,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 00:11:53,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-12 00:11:53,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-12 00:11:53,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127815199] [2023-11-12 00:11:53,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215400763] [2023-11-12 00:11:53,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215400763] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [347969470] [2023-11-12 00:11:53,922 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:11:53,923 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:53,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:53,924 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:53,924 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:53,947 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※59 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~min~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~min~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※62 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※55 L25-2 8 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 9 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~min~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 10 ※48 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 11 ※49 L44 12 ※50 L29 13 ※51 L29-1 14 ※52 L31 15 ※53 L38-2 16 ※54 L27-2 17 ※56 L40-3 18 ※57 L40-2 19 ※58 L46 20 ※60 L27-3 21 ※61 L41-2 22 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 23 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 24 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 25 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 26 assume !(1 + main_~i~0#1 <= 2147483647); 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 29 assume 1 + main_~j~0#1 >= -2147483648; 30 assume 1 + main_~i~0#1 >= -2147483648; 31 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 32 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 33 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 34 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 37 [((assume 1 + main_~i~0#1 >= -2147483648;·assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;)·((assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;·[((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition))]* 38 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 39 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~min~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 3 9 forward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 7 backward 4 17 backward 4 18 backward 4 19 backward 4 1 backward 4 20 backward 4 21 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 22 forward 7 3 backward 7 23 backward 7 4 forward 8 3 backward 8 23 backward 8 24 forward 9 3 backward 9 23 backward 9 25 forward 9 15 forward 10 26 backward 10 4 forward 11 27 backward 11 4 forward 12 28 backward 12 4 forward 13 29 backward 13 4 forward 14 30 backward 14 4 forward 15 31 backward 15 9 backward 15 4 forward 16 24 backward 16 4 forward 17 32 backward 17 4 forward 18 33 backward 18 33 backward 18 25 backward 18 33 backward 18 33 backward 18 25 backward 18 34 backward 18 4 forward 19 35 backward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 38 backward 21 4 forward 22 6 backward 22 39 forward 23 30 backward 23 7 forward 23 8 forward 23 9 forward 24 8 backward 24 16 forward 24 28 forward 25 9 backward 25 32 forward 25 18 forward 25 40 forward 25 41 forward 25 32 forward 25 18 forward 26 35 backward 26 36 backward 26 10 forward 27 38 backward 27 11 forward 27 33 forward 28 24 backward 28 12 forward 28 29 forward 29 28 backward 29 13 forward 30 37 backward 30 14 forward 30 23 forward 31 35 backward 31 36 backward 31 15 forward 31 34 forward 32 33 backward 32 33 backward 32 25 backward 32 33 backward 32 33 backward 32 25 backward 32 34 backward 32 34 backward 32 17 forward 33 27 backward 33 42 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 34 31 backward 34 43 backward 34 32 forward 34 32 forward 34 18 forward 34 40 forward 34 41 forward 35 44 backward 35 26 forward 35 19 forward 35 31 forward 36 45 backward 36 26 forward 36 19 forward 36 31 forward 36 46 forward 37 39 backward 37 20 forward 37 30 forward 38 40 backward 38 21 forward 38 27 forward 39 22 backward 39 37 forward 40 47 backward 40 25 backward 40 34 backward 40 38 forward 41 25 backward 41 34 backward 41 45 forward 42 33 backward 42 44 forward 43 23 backward 43 3 backward 43 15 forward 43 25 forward 43 34 forward 44 42 backward 44 35 forward 45 41 backward 45 36 forward 46 36 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:11:53,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:53,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-12 00:11:53,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998176431] [2023-11-12 00:11:53,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:53,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-12 00:11:53,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-12 00:11:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-11-12 00:11:53,977 INFO L87 Difference]: Start difference. First operand 242 states and 253 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:54,724 INFO L93 Difference]: Finished difference Result 734 states and 840 transitions. [2023-11-12 00:11:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-12 00:11:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-11-12 00:11:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:54,729 INFO L225 Difference]: With dead ends: 734 [2023-11-12 00:11:54,730 INFO L226 Difference]: Without dead ends: 494 [2023-11-12 00:11:54,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-11-12 00:11:54,735 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 568 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:54,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 33 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:11:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-12 00:11:54,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2023-11-12 00:11:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 492 states have (on average 1.0264227642276422) internal successors, (505), 493 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 505 transitions. [2023-11-12 00:11:54,777 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 505 transitions. Word has length 138 [2023-11-12 00:11:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:54,778 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 505 transitions. [2023-11-12 00:11:54,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 25 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:54,778 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 505 transitions. [2023-11-12 00:11:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-12 00:11:54,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:11:54,787 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:11:54,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:54,994 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-12 00:11:54,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:11:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1605494497, now seen corresponding path program 2 times [2023-11-12 00:11:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:11:54,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195587987] [2023-11-12 00:11:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:11:54,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:11:55,043 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:11:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424615463] [2023-11-12 00:11:55,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:11:55,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:11:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:11:55,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:11:55,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 00:11:55,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-12 00:11:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:11:55,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:11:55,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:11:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7361 backedges. 0 proven. 2998 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2023-11-12 00:11:55,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:11:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7361 backedges. 0 proven. 2998 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2023-11-12 00:11:56,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:11:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195587987] [2023-11-12 00:11:56,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:11:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424615463] [2023-11-12 00:11:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424615463] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:11:56,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5621871] [2023-11-12 00:11:56,026 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:11:56,026 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:11:56,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:11:56,027 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:11:56,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:11:56,045 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: "Dag" had a cycle: 0 ε 1 ※75 $Ultimate##0 2 ∅ 3 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~mem8#1, main_~i~0#1, main_~j~0#1, main_~m~0#1, main_~n~0#1, main_~#A~0#1.base, main_~#A~0#1.offset, main_~min~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~m~0#1 := 1000;main_~n~0#1 := 1500;call main_~#A~0#1.base, main_~#A~0#1.offset := #Ultimate.allocOnStack(4 * main_~n~0#1 * main_~n~0#1 % 4294967296);havoc main_~min~0#1;main_~i~0#1 := 0;main_~j~0#1 := 0; 4 ε 5 ※77 null 6 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 7 ※70 L25-2 8 assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0; 9 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~min~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 10 ※63 ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW 11 ※64 L44 12 ※65 L29 13 ※66 L29-1 14 ※67 L31 15 ※68 L38-2 16 ※69 L27-2 17 ※71 L40-3 18 ※72 L40-2 19 ※73 L46 20 ※74 L27-3 21 ※76 L41-2 22 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 23 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 24 [((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* 25 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 26 assume !(1 + main_~i~0#1 <= 2147483647); 27 assume 1 + main_~j~0#1 >= -2147483648; 28 assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1; 29 assume 1 + main_~j~0#1 >= -2147483648; 30 assume 1 + main_~i~0#1 >= -2147483648; 31 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 32 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 33 assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1; 34 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 35 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 36 [((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* 37 [((assume 1 + main_~i~0#1 >= -2147483648;·assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;)·((assume !!(main_~i~0#1 < main_~m~0#1);main_~j~0#1 := 0;·[((assume !!(main_~j~0#1 < main_~n~0#1);havoc main_#t~nondet4#1;assume -2147483648 <= main_#t~nondet4#1 && main_#t~nondet4#1 <= 2147483647;call write~int(main_#t~nondet4#1, main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);havoc main_#t~nondet4#1;·assume 1 + main_~j~0#1 >= -2147483648;)·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)]* )·BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition))]* 38 [{((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition) ∪ ((((assume 1 + main_~j~0#1 >= -2147483648;·assume 1 + main_~j~0#1 <= 2147483647;main_~j~0#1 := 1 + main_~j~0#1;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))·[((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·(BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition·assume 1 + main_~i~0#1 >= -2147483648;))]* )·((assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1;·assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0;)·assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition))}]* 39 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 40 assume !!(main_~j~0#1 < main_~n~0#1);call main_#t~mem6#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);BeginParallelComposition{ParallelCodeBlock0: assume main_#t~mem6#1 < main_~min~0#1;havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset + main_~i~0#1 * (4 * main_~n~0#1) + 4 * main_~j~0#1, 4);main_~min~0#1 := main_#t~mem7#1;havoc main_#t~mem7#1;ParallelCodeBlock1: assume !(main_#t~mem6#1 < main_~min~0#1);havoc main_#t~mem6#1;}EndParallelComposition 41 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 42 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~j~0#1 < main_~n~0#1);ParallelCodeBlock1: assume !true;}EndParallelComposition 43 BeginParallelComposition{ParallelCodeBlock0: assume !(main_~i~0#1 < main_~m~0#1);ParallelCodeBlock1: assume !true;}EndParallelCompositionmain_~i~0#1 := 0;main_~j~0#1 := 0;call main_#t~mem5#1 := read~int(main_~#A~0#1.base, main_~#A~0#1.offset, 4);main_~min~0#1 := main_#t~mem5#1;havoc main_#t~mem5#1; 44 assume 1 + main_~i~0#1 >= -2147483648; 45 assume 1 + main_~i~0#1 >= -2147483648; 46 assume 1 + main_~i~0#1 <= 2147483647;main_~i~0#1 := 1 + main_~i~0#1; 47 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; # 0 1 forward 0 2 forward 0 3 forward 1 0 backward 1 4 forward 2 0 backward 2 5 forward 3 0 backward 3 6 forward 3 7 forward 3 8 forward 3 9 forward 4 10 backward 4 11 backward 4 12 backward 4 13 backward 4 14 backward 4 15 backward 4 16 backward 4 7 backward 4 17 backward 4 18 backward 4 19 backward 4 20 backward 4 1 backward 4 21 backward 4 5 backward 5 2 backward 5 4 forward 6 3 backward 6 22 forward 7 3 backward 7 23 backward 7 4 forward 8 3 backward 8 23 backward 8 24 forward 9 3 backward 9 23 backward 9 25 forward 9 15 forward 10 26 backward 10 4 forward 11 27 backward 11 4 forward 12 28 backward 12 4 forward 13 29 backward 13 4 forward 14 30 backward 14 4 forward 15 31 backward 15 9 backward 15 4 forward 16 24 backward 16 4 forward 17 32 backward 17 4 forward 18 33 backward 18 33 backward 18 25 backward 18 33 backward 18 33 backward 18 25 backward 18 34 backward 18 4 forward 19 35 backward 19 36 backward 19 4 forward 20 37 backward 20 4 forward 21 38 backward 21 4 forward 22 6 backward 22 39 forward 23 30 backward 23 7 forward 23 8 forward 23 9 forward 24 8 backward 24 16 forward 24 28 forward 25 9 backward 25 32 forward 25 18 forward 25 40 forward 25 41 forward 25 32 forward 25 18 forward 26 35 backward 26 36 backward 26 10 forward 27 38 backward 27 11 forward 27 33 forward 28 24 backward 28 12 forward 28 29 forward 29 28 backward 29 13 forward 30 37 backward 30 14 forward 30 23 forward 31 35 backward 31 36 backward 31 15 forward 31 34 forward 32 33 backward 32 33 backward 32 25 backward 32 33 backward 32 33 backward 32 25 backward 32 34 backward 32 34 backward 32 17 forward 33 27 backward 33 42 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 33 32 forward 33 18 forward 34 31 backward 34 43 backward 34 32 forward 34 32 forward 34 18 forward 34 40 forward 34 41 forward 35 44 backward 35 26 forward 35 19 forward 35 31 forward 36 45 backward 36 26 forward 36 19 forward 36 31 forward 36 46 forward 37 39 backward 37 20 forward 37 30 forward 38 40 backward 38 21 forward 38 27 forward 39 22 backward 39 37 forward 40 47 backward 40 25 backward 40 34 backward 40 38 forward 41 25 backward 41 34 backward 41 45 forward 42 33 backward 42 44 forward 43 23 backward 43 3 backward 43 15 forward 43 25 forward 43 34 forward 44 42 backward 44 35 forward 45 41 backward 45 36 forward 46 36 backward 46 47 forward 47 46 backward 47 40 forward at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.lambda$2(TopsortCache.java:53) at java.base/java.util.Optional.orElseThrow(Optional.java:408) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.compute(TopsortCache.java:53) at java.base/java.util.Map.computeIfAbsent(Map.java:1003) at de.uni_freiburg.informatik.ultimate.lib.sifa.TopsortCache.topsort(TopsortCache.java:46) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:113) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-12 00:11:56,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:11:56,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-12 00:11:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563012821] [2023-11-12 00:11:56,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:11:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:11:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:11:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:11:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:11:56,058 INFO L87 Difference]: Start difference. First operand 494 states and 505 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:11:56,175 INFO L93 Difference]: Finished difference Result 633 states and 647 transitions. [2023-11-12 00:11:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:11:56,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2023-11-12 00:11:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:11:56,177 INFO L225 Difference]: With dead ends: 633 [2023-11-12 00:11:56,177 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:11:56,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:11:56,179 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 41 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:11:56,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:11:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:11:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:11:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:11:56,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 282 [2023-11-12 00:11:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:11:56,181 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:11:56,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:11:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:11:56,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:11:56,185 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-12 00:11:56,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-12 00:11:56,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-12 00:11:56,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-12 00:11:56,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-12 00:11:56,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-12 00:11:56,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-12 00:11:56,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-12 00:11:56,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-12 00:11:56,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-12 00:11:56,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-12 00:11:56,189 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-12 00:11:56,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-12 00:11:56,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:11:56,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:12:00,204 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 30) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 999) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-12 00:12:00,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 54 62) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-12 00:12:00,206 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L895 garLoopResultBuilder]: At program point L40-2(lines 40 45) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 1499) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point L40-3(lines 40 45) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:12:00,207 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-12 00:12:00,208 INFO L895 garLoopResultBuilder]: At program point L25-2(lines 25 32) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~m~0#1| 1000) (<= |ULTIMATE.start_main_~i~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~j~0#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483646) (= |ULTIMATE.start_main_~n~0#1| 1500)) [2023-11-12 00:12:00,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-12 00:12:00,208 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-11-12 00:12:00,208 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-11-12 00:12:00,208 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-12 00:12:00,211 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 00:12:00,215 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:12:00,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:12:00 BoogieIcfgContainer [2023-11-12 00:12:00,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:12:00,248 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:12:00,248 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:12:00,248 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:12:00,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:11:43" (3/4) ... [2023-11-12 00:12:00,251 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:12:00,261 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-12 00:12:00,262 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-12 00:12:00,262 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:12:00,262 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:12:00,413 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:12:00,414 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:12:00,414 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:12:00,415 INFO L158 Benchmark]: Toolchain (without parser) took 17795.81ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 124.0MB in the beginning and 264.0MB in the end (delta: -140.0MB). Peak memory consumption was 164.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,415 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:00,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.30ms. Allocated memory is still 169.9MB. Free memory was 123.7MB in the beginning and 113.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.77ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 111.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,417 INFO L158 Benchmark]: Boogie Preprocessor took 52.31ms. Allocated memory is still 169.9MB. Free memory was 111.3MB in the beginning and 110.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,418 INFO L158 Benchmark]: RCFGBuilder took 534.33ms. Allocated memory is still 169.9MB. Free memory was 110.1MB in the beginning and 94.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,419 INFO L158 Benchmark]: TraceAbstraction took 16739.69ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 93.7MB in the beginning and 93.4MB in the end (delta: 261.2kB). Peak memory consumption was 137.2MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,419 INFO L158 Benchmark]: Witness Printer took 166.84ms. Allocated memory is still 297.8MB. Free memory was 93.4MB in the beginning and 264.0MB in the end (delta: -170.6MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:00,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 169.9MB. Free memory is still 142.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.30ms. Allocated memory is still 169.9MB. Free memory was 123.7MB in the beginning and 113.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.77ms. Allocated memory is still 169.9MB. Free memory was 113.1MB in the beginning and 111.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.31ms. Allocated memory is still 169.9MB. Free memory was 111.3MB in the beginning and 110.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.33ms. Allocated memory is still 169.9MB. Free memory was 110.1MB in the beginning and 94.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16739.69ms. Allocated memory was 169.9MB in the beginning and 297.8MB in the end (delta: 127.9MB). Free memory was 93.7MB in the beginning and 93.4MB in the end (delta: 261.2kB). Peak memory consumption was 137.2MB. Max. memory is 16.1GB. * Witness Printer took 166.84ms. Allocated memory is still 297.8MB. Free memory was 93.4MB in the beginning and 264.0MB in the end (delta: -170.6MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 31]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16.6s, OverallIterations: 11, TraceHistogramMax: 66, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1158 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1158 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 108 mSDsCounter, 427 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 662 IncrementalHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 427 mSolverCounterUnsat, 120 mSDtfsCounter, 662 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1375 GetRequests, 1259 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=494occurred in iteration=10, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 219 NumberOfFragments, 114 HoareAnnotationTreeSize, 6 FomulaSimplifications, 5551 FormulaSimplificationTreeSizeReduction, 2.6s HoareSimplificationTime, 6 FomulaSimplificationsInter, 4817 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 608 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1180 ConstructedInterpolants, 0 QuantifiedInterpolants, 3322 SizeOfPredicates, 12 NumberOfNonLiveVariables, 977 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 12926/19970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 14, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 28, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 35, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (0 <= j)) && (0 <= i)) && (i <= 1499)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 2147483646)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (i <= 999)) && (0 <= j)) && (0 <= i)) && (j <= 2147483646)) && (n == 1500)) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((m <= 1000) && (0 <= j)) && (0 <= i)) && (i <= 1499)) && (j <= 2147483646)) && (n == 1500)) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:12:00,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bc830-f971-4a4f-8c81-7fab3056af1a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE