./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 9bd2c7ff 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_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-multidimensional/min-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 04:49:16,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:49:16,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:49:16,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:49:16,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:49:16,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:49:16,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:49:16,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:49:16,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:49:16,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:49:16,922 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:49:16,923 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:49:16,923 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:49:16,924 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:49:16,925 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:49:16,925 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:49:16,926 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:49:16,931 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:49:16,931 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:49:16,932 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:49:16,933 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:49:16,934 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:49:16,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:49:16,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:49:16,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:49:16,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:49:16,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:49:16,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:49:16,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:49:16,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:49:16,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:49:16,945 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:49:16,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:49:16,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:49:16,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:49:16,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:49:16,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:49:16,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:49:16,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:16,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:49:16,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:49:16,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:49:16,951 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:49:16,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:49:16,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:49:16,952 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:49:16,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:49:16,953 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_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2023-11-19 04:49:17,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:49:17,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:49:17,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:49:17,341 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:49:17,341 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:49:17,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/array-multidimensional/min-2-u.c [2023-11-19 04:49:20,882 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:49:21,097 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:49:21,097 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/sv-benchmarks/c/array-multidimensional/min-2-u.c [2023-11-19 04:49:21,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/data/9edd8d264/2227d41d413044f7979613180cfc01b8/FLAGd95858932 [2023-11-19 04:49:21,130 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/data/9edd8d264/2227d41d413044f7979613180cfc01b8 [2023-11-19 04:49:21,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:49:21,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:49:21,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:21,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:49:21,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:49:21,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4f3408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21, skipping insertion in model container [2023-11-19 04:49:21,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:49:21,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:21,480 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:49:21,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:49:21,550 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:49:21,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21 WrapperNode [2023-11-19 04:49:21,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:49:21,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:21,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:49:21,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:49:21,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,630 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-11-19 04:49:21,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:49:21,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:49:21,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:49:21,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:49:21,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,682 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:49:21,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:49:21,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:49:21,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:49:21,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (1/1) ... [2023-11-19 04:49:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:49:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:21,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:49:21,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:49:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:49:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:49:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:49:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:49:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:49:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:49:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:49:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:49:21,885 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:49:21,889 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:49:22,193 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:49:22,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:49:22,262 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 04:49:22,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:22 BoogieIcfgContainer [2023-11-19 04:49:22,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:49:22,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:49:22,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:49:22,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:49:22,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:49:21" (1/3) ... [2023-11-19 04:49:22,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195bb916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:22, skipping insertion in model container [2023-11-19 04:49:22,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:49:21" (2/3) ... [2023-11-19 04:49:22,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195bb916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:49:22, skipping insertion in model container [2023-11-19 04:49:22,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:22" (3/3) ... [2023-11-19 04:49:22,280 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2023-11-19 04:49:22,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:49:22,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 04:49:22,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:49:22,377 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;@a6ee25a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:49:22,378 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 04:49:22,383 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) [2023-11-19 04:49:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:49:22,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:22,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:49:22,392 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)] === [2023-11-19 04:49:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:22,399 INFO L85 PathProgramCache]: Analyzing trace with hash 4628817, now seen corresponding path program 1 times [2023-11-19 04:49:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114198255] [2023-11-19 04:49:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:22,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:22,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478745914] [2023-11-19 04:49:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:22,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:22,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:22,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:49:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:22,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:22,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:22,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:22,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114198255] [2023-11-19 04:49:22,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:22,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478745914] [2023-11-19 04:49:22,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478745914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:22,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:22,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147807521] [2023-11-19 04:49:22,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:22,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:22,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:22,830 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) [2023-11-19 04:49:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:22,933 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2023-11-19 04:49:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:22,937 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 [2023-11-19 04:49:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:22,946 INFO L225 Difference]: With dead ends: 32 [2023-11-19 04:49:22,947 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 04:49:22,949 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 [2023-11-19 04:49:22,954 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 [2023-11-19 04:49:22,955 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] [2023-11-19 04:49:22,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 04:49:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-19 04:49:22,986 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) [2023-11-19 04:49:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-11-19 04:49:22,989 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 4 [2023-11-19 04:49:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:22,990 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-11-19 04:49:22,990 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) [2023-11-19 04:49:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-19 04:49:22,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:49:22,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:22,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:49:23,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:49:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 04:49:23,204 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)] === [2023-11-19 04:49:23,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash 4632544, now seen corresponding path program 1 times [2023-11-19 04:49:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343057891] [2023-11-19 04:49:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:23,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:23,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087492197] [2023-11-19 04:49:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:23,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:23,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:23,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:23,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:49:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:23,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:23,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:23,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:23,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:23,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343057891] [2023-11-19 04:49:23,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:23,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087492197] [2023-11-19 04:49:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087492197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:49:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720008685] [2023-11-19 04:49:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:23,319 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) [2023-11-19 04:49:23,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:23,408 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-11-19 04:49:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:23,408 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 [2023-11-19 04:49:23,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:23,409 INFO L225 Difference]: With dead ends: 28 [2023-11-19 04:49:23,410 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 04:49:23,410 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 [2023-11-19 04:49:23,412 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:23,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 04:49:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-19 04:49:23,423 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) [2023-11-19 04:49:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-19 04:49:23,426 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2023-11-19 04:49:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:23,427 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-19 04:49:23,427 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) [2023-11-19 04:49:23,428 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-19 04:49:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:49:23,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:23,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:49:23,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:23,652 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)] === [2023-11-19 04:49:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash 143493381, now seen corresponding path program 1 times [2023-11-19 04:49:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938929803] [2023-11-19 04:49:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:23,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:23,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877936875] [2023-11-19 04:49:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:23,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:23,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:23,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:23,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:49:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:23,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:23,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:23,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:23,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938929803] [2023-11-19 04:49:23,752 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877936875] [2023-11-19 04:49:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877936875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:23,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:23,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:49:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891077178] [2023-11-19 04:49:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:23,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:23,756 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) [2023-11-19 04:49:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:23,837 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-11-19 04:49:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:23,838 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 [2023-11-19 04:49:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:23,843 INFO L225 Difference]: With dead ends: 49 [2023-11-19 04:49:23,844 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 04:49:23,844 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 [2023-11-19 04:49:23,850 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-19 04:49:23,856 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] [2023-11-19 04:49:23,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 04:49:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2023-11-19 04:49:23,864 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) [2023-11-19 04:49:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-19 04:49:23,865 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 5 [2023-11-19 04:49:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:23,866 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-19 04:49:23,866 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) [2023-11-19 04:49:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-19 04:49:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:49:23,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:23,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:49:23,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:24,088 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)] === [2023-11-19 04:49:24,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash 143608925, now seen corresponding path program 1 times [2023-11-19 04:49:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:24,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642456128] [2023-11-19 04:49:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:24,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847123436] [2023-11-19 04:49:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:24,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:24,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:24,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:49:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:24,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:49:24,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:24,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:49:24,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642456128] [2023-11-19 04:49:24,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:24,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847123436] [2023-11-19 04:49:24,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847123436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:24,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:49:24,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:49:24,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997127594] [2023-11-19 04:49:24,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:24,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:49:24,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:49:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:49:24,205 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) [2023-11-19 04:49:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:24,320 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2023-11-19 04:49:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:49:24,321 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 [2023-11-19 04:49:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:24,325 INFO L225 Difference]: With dead ends: 67 [2023-11-19 04:49:24,325 INFO L226 Difference]: Without dead ends: 64 [2023-11-19 04:49:24,326 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 [2023-11-19 04:49:24,328 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-19 04:49:24,329 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] [2023-11-19 04:49:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-19 04:49:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-11-19 04:49:24,350 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) [2023-11-19 04:49:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2023-11-19 04:49:24,351 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 5 [2023-11-19 04:49:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:24,352 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2023-11-19 04:49:24,352 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) [2023-11-19 04:49:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2023-11-19 04:49:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:49:24,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:24,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 04:49:24,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 04:49:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:24,571 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)] === [2023-11-19 04:49:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1318903567, now seen corresponding path program 1 times [2023-11-19 04:49:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334711534] [2023-11-19 04:49:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:24,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74417829] [2023-11-19 04:49:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:24,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:24,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:24,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:49:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:24,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:24,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:24,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:49:24,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334711534] [2023-11-19 04:49:24,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:24,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74417829] [2023-11-19 04:49:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74417829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968832545] [2023-11-19 04:49:24,828 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-19 04:49:24,828 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:24,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:24,838 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:24,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:25,764 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [968832545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:49:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2023-11-19 04:49:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118138999] [2023-11-19 04:49:25,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:49:25,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:49:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:49:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:49:25,995 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) [2023-11-19 04:49:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:26,259 INFO L93 Difference]: Finished difference Result 114 states and 148 transitions. [2023-11-19 04:49:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:49:26,260 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 [2023-11-19 04:49:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:26,261 INFO L225 Difference]: With dead ends: 114 [2023-11-19 04:49:26,261 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 04:49:26,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:49:26,263 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 [2023-11-19 04:49:26,263 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] [2023-11-19 04:49:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 04:49:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-19 04:49:26,275 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) [2023-11-19 04:49:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-11-19 04:49:26,276 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 8 [2023-11-19 04:49:26,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:26,277 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-11-19 04:49:26,277 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) [2023-11-19 04:49:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-11-19 04:49:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:49:26,278 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:26,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:26,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:26,503 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)] === [2023-11-19 04:49:26,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1069662294, now seen corresponding path program 1 times [2023-11-19 04:49:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:26,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062905778] [2023-11-19 04:49:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:26,512 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975127438] [2023-11-19 04:49:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:26,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:26,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:26,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:49:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:26,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:49:26,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:26,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:49:26,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062905778] [2023-11-19 04:49:26,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:26,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975127438] [2023-11-19 04:49:26,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975127438] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:26,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1801565158] [2023-11-19 04:49:26,667 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:49:26,668 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:26,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:26,668 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:26,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:27,354 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:27,760 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 [2023-11-19 04:49:27,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:27,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 04:49:27,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17541558] [2023-11-19 04:49:27,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:27,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:49:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:27,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:49:27,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:49:27,763 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) [2023-11-19 04:49:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:27,946 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2023-11-19 04:49:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:49:27,947 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 [2023-11-19 04:49:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:27,948 INFO L225 Difference]: With dead ends: 159 [2023-11-19 04:49:27,949 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 04:49:27,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:49:27,951 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 [2023-11-19 04:49:27,951 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] [2023-11-19 04:49:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 04:49:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2023-11-19 04:49:27,969 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) [2023-11-19 04:49:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2023-11-19 04:49:27,971 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 12 [2023-11-19 04:49:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:27,971 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2023-11-19 04:49:27,971 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) [2023-11-19 04:49:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2023-11-19 04:49:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:49:27,973 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:27,973 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 2, 1, 1, 1, 1, 1] [2023-11-19 04:49:27,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:28,196 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)] === [2023-11-19 04:49:28,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2082836408, now seen corresponding path program 1 times [2023-11-19 04:49:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:28,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811942860] [2023-11-19 04:49:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:28,212 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:28,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867203301] [2023-11-19 04:49:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:28,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:28,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:28,215 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:28,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:49:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:28,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:49:28,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 04:49:28,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 04:49:28,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811942860] [2023-11-19 04:49:28,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867203301] [2023-11-19 04:49:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867203301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860967731] [2023-11-19 04:49:28,534 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:49:28,534 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:28,535 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:28,535 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:28,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:29,066 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:29,452 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 [2023-11-19 04:49:29,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:29,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-19 04:49:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947685329] [2023-11-19 04:49:29,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:29,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 04:49:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 04:49:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:49:29,458 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) [2023-11-19 04:49:29,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:29,931 INFO L93 Difference]: Finished difference Result 311 states and 396 transitions. [2023-11-19 04:49:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:49:29,933 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 [2023-11-19 04:49:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:29,938 INFO L225 Difference]: With dead ends: 311 [2023-11-19 04:49:29,938 INFO L226 Difference]: Without dead ends: 223 [2023-11-19 04:49:29,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2023-11-19 04:49:29,942 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, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:29,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 46 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:49:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-19 04:49:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 211. [2023-11-19 04:49:29,981 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) [2023-11-19 04:49:29,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2023-11-19 04:49:29,984 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 27 [2023-11-19 04:49:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:29,984 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2023-11-19 04:49:29,984 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) [2023-11-19 04:49:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2023-11-19 04:49:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:49:29,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:29,987 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 2, 1, 1, 1, 1, 1] [2023-11-19 04:49:30,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:30,205 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)] === [2023-11-19 04:49:30,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -844778452, now seen corresponding path program 2 times [2023-11-19 04:49:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:30,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165703516] [2023-11-19 04:49:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:30,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:30,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624704731] [2023-11-19 04:49:30,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:49:30,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:30,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:30,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:30,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:49:30,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:49:30,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:49:30,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:30,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-19 04:49:30,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2023-11-19 04:49:30,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165703516] [2023-11-19 04:49:30,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624704731] [2023-11-19 04:49:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624704731] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [410956184] [2023-11-19 04:49:30,551 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:49:30,551 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:30,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:30,551 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:30,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:31,061 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:31,446 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 [2023-11-19 04:49:31,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:31,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 04:49:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644548574] [2023-11-19 04:49:31,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:49:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:49:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:49:31,448 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) [2023-11-19 04:49:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:31,544 INFO L93 Difference]: Finished difference Result 211 states and 242 transitions. [2023-11-19 04:49:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:49:31,545 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 [2023-11-19 04:49:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:31,547 INFO L225 Difference]: With dead ends: 211 [2023-11-19 04:49:31,548 INFO L226 Difference]: Without dead ends: 208 [2023-11-19 04:49:31,550 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 [2023-11-19 04:49:31,552 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:31,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-19 04:49:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-11-19 04:49:31,587 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) [2023-11-19 04:49:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 217 transitions. [2023-11-19 04:49:31,589 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 217 transitions. Word has length 54 [2023-11-19 04:49:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:31,590 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 217 transitions. [2023-11-19 04:49:31,590 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) [2023-11-19 04:49:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 217 transitions. [2023-11-19 04:49:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 04:49:31,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:31,601 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 1, 1, 1] [2023-11-19 04:49:31,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:31,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:31,827 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)] === [2023-11-19 04:49:31,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2096295136, now seen corresponding path program 2 times [2023-11-19 04:49:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902155949] [2023-11-19 04:49:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:31,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:31,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701342674] [2023-11-19 04:49:31,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:49:31,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:31,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:31,890 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:49:31,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:49:31,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:49:31,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:31,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 04:49:32,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 04:49:32,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902155949] [2023-11-19 04:49:32,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:32,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701342674] [2023-11-19 04:49:32,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701342674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2125572517] [2023-11-19 04:49:32,226 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2023-11-19 04:49:32,226 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:32,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:32,227 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:32,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:32,662 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:49:33,021 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 [2023-11-19 04:49:33,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:49:33,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 04:49:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130541413] [2023-11-19 04:49:33,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:33,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:49:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:49:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:49:33,024 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) [2023-11-19 04:49:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:33,142 INFO L93 Difference]: Finished difference Result 278 states and 290 transitions. [2023-11-19 04:49:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:33,143 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 [2023-11-19 04:49:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:33,148 INFO L225 Difference]: With dead ends: 278 [2023-11-19 04:49:33,148 INFO L226 Difference]: Without dead ends: 275 [2023-11-19 04:49:33,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:49:33,152 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 [2023-11-19 04:49:33,152 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] [2023-11-19 04:49:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-11-19 04:49:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 242. [2023-11-19 04:49:33,180 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) [2023-11-19 04:49:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 253 transitions. [2023-11-19 04:49:33,182 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 253 transitions. Word has length 69 [2023-11-19 04:49:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:33,183 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 253 transitions. [2023-11-19 04:49:33,183 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) [2023-11-19 04:49:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 253 transitions. [2023-11-19 04:49:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 04:49:33,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:33,188 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:33,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 04:49:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:33,410 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)] === [2023-11-19 04:49:33,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash -895842911, now seen corresponding path program 1 times [2023-11-19 04:49:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540224802] [2023-11-19 04:49:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:33,438 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211057804] [2023-11-19 04:49:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:33,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:33,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:33,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:49:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:49:33,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 04:49:33,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-19 04:49:33,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 1 proven. 145 refuted. 0 times theorem prover too weak. 1407 trivial. 0 not checked. [2023-11-19 04:49:34,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540224802] [2023-11-19 04:49:34,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211057804] [2023-11-19 04:49:34,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211057804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:34,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874493482] [2023-11-19 04:49:34,114 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 04:49:34,115 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:34,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:34,115 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:34,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:34,147 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 04:49:34,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:34,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-11-19 04:49:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940242949] [2023-11-19 04:49:34,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:34,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 04:49:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 04:49:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-11-19 04:49:34,183 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) [2023-11-19 04:49:34,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:34,896 INFO L93 Difference]: Finished difference Result 734 states and 840 transitions. [2023-11-19 04:49:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 04:49:34,897 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 [2023-11-19 04:49:34,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:34,901 INFO L225 Difference]: With dead ends: 734 [2023-11-19 04:49:34,902 INFO L226 Difference]: Without dead ends: 494 [2023-11-19 04:49:34,906 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 [2023-11-19 04:49:34,908 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 [2023-11-19 04:49:34,909 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] [2023-11-19 04:49:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-19 04:49:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2023-11-19 04:49:34,951 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) [2023-11-19 04:49:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 505 transitions. [2023-11-19 04:49:34,969 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 505 transitions. Word has length 138 [2023-11-19 04:49:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:34,969 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 505 transitions. [2023-11-19 04:49:34,970 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) [2023-11-19 04:49:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 505 transitions. [2023-11-19 04:49:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-19 04:49:34,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:49:34,979 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:49:35,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:35,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:49:35,200 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)] === [2023-11-19 04:49:35,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:49:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1605494497, now seen corresponding path program 2 times [2023-11-19 04:49:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:49:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763945452] [2023-11-19 04:49:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:49:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:49:35,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:49:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099161660] [2023-11-19 04:49:35,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:49:35,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:49:35,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:49:35,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:49:35,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:49:35,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-19 04:49:35,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:49:35,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:49:35,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:49:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7361 backedges. 0 proven. 2998 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2023-11-19 04:49:35,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:49:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7361 backedges. 0 proven. 2998 refuted. 0 times theorem prover too weak. 4363 trivial. 0 not checked. [2023-11-19 04:49:36,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:49:36,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763945452] [2023-11-19 04:49:36,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:49:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099161660] [2023-11-19 04:49:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099161660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:49:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1294011287] [2023-11-19 04:49:36,124 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 04:49:36,124 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:49:36,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:49:36,125 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:49:36,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:49:36,143 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) [2023-11-19 04:49:36,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:49:36,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-19 04:49:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856724424] [2023-11-19 04:49:36,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:49:36,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:49:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:49:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:49:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:49:36,158 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) [2023-11-19 04:49:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:49:36,332 INFO L93 Difference]: Finished difference Result 633 states and 647 transitions. [2023-11-19 04:49:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:49:36,333 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 [2023-11-19 04:49:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:49:36,335 INFO L225 Difference]: With dead ends: 633 [2023-11-19 04:49:36,336 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:49:36,337 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 [2023-11-19 04:49:36,338 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:49:36,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 10 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:49:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:49:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:49:36,340 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) [2023-11-19 04:49:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:49:36,340 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 282 [2023-11-19 04:49:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:49:36,341 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:49:36,341 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) [2023-11-19 04:49:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:49:36,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:49:36,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-19 04:49:36,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-19 04:49:36,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-19 04:49:36,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-19 04:49:36,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-19 04:49:36,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-19 04:49:36,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-19 04:49:36,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-19 04:49:36,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-19 04:49:36,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-19 04:49:36,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-19 04:49:36,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-19 04:49:36,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 04:49:36,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 04:49:36,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:49:40,594 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-19 04:49:40,594 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)) [2023-11-19 04:49:40,594 INFO L899 garLoopResultBuilder]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2023-11-19 04:49:40,595 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-19 04:49:40,595 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-19 04:49:40,595 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-19 04:49:40,595 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point L29-1(line 29) no Hoare annotation was computed. [2023-11-19 04:49:40,596 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)) [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-19 04:49:40,596 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 59) no Hoare annotation was computed. [2023-11-19 04:49:40,597 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:49:40,597 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)) [2023-11-19 04:49:40,598 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-19 04:49:40,598 INFO L899 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2023-11-19 04:49:40,598 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)) [2023-11-19 04:49:40,598 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2023-11-19 04:49:40,599 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 61) no Hoare annotation was computed. [2023-11-19 04:49:40,599 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)) [2023-11-19 04:49:40,599 INFO L899 garLoopResultBuilder]: For program point L40-3(lines 40 45) no Hoare annotation was computed. [2023-11-19 04:49:40,599 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-19 04:49:40,600 INFO L899 garLoopResultBuilder]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2023-11-19 04:49:40,600 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:49:40,600 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-19 04:49:40,600 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)) [2023-11-19 04:49:40,600 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-19 04:49:40,601 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-11-19 04:49:40,601 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-11-19 04:49:40,601 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2023-11-19 04:49:40,605 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 04:49:40,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:49:40,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:49:40 BoogieIcfgContainer [2023-11-19 04:49:40,639 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:49:40,640 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:49:40,640 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:49:40,640 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:49:40,641 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:49:22" (3/4) ... [2023-11-19 04:49:40,643 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:49:40,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-19 04:49:40,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 04:49:40,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 04:49:40,658 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:49:40,821 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:49:40,822 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:49:40,822 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:49:40,823 INFO L158 Benchmark]: Toolchain (without parser) took 19687.40ms. Allocated memory was 138.4MB in the beginning and 308.3MB in the end (delta: 169.9MB). Free memory was 94.4MB in the beginning and 136.3MB in the end (delta: -42.0MB). Peak memory consumption was 130.7MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,823 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:49:40,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.13ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 83.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.92ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,826 INFO L158 Benchmark]: Boogie Preprocessor took 53.07ms. Allocated memory is still 138.4MB. Free memory was 81.8MB in the beginning and 80.8MB in the end (delta: 963.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,826 INFO L158 Benchmark]: RCFGBuilder took 582.47ms. Allocated memory is still 138.4MB. Free memory was 80.2MB in the beginning and 64.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,827 INFO L158 Benchmark]: TraceAbstraction took 18368.29ms. Allocated memory was 138.4MB in the beginning and 308.3MB in the end (delta: 169.9MB). Free memory was 64.0MB in the beginning and 141.6MB in the end (delta: -77.5MB). Peak memory consumption was 141.3MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,828 INFO L158 Benchmark]: Witness Printer took 182.30ms. Allocated memory is still 308.3MB. Free memory was 141.6MB in the beginning and 136.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:49:40,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 107.0MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.13ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 83.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.92ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 81.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.07ms. Allocated memory is still 138.4MB. Free memory was 81.8MB in the beginning and 80.8MB in the end (delta: 963.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 582.47ms. Allocated memory is still 138.4MB. Free memory was 80.2MB in the beginning and 64.6MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 18368.29ms. Allocated memory was 138.4MB in the beginning and 308.3MB in the end (delta: 169.9MB). Free memory was 64.0MB in the beginning and 141.6MB in the end (delta: -77.5MB). Peak memory consumption was 141.3MB. Max. memory is 16.1GB. * Witness Printer took 182.30ms. Allocated memory is still 308.3MB. Free memory was 141.6MB in the beginning and 136.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 18.3s, OverallIterations: 11, TraceHistogramMax: 66, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1158 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1158 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 1.1s 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, 2.8s 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 219 NumberOfFragments, 114 HoareAnnotationTreeSize, 6 FomulaSimplifications, 5551 FormulaSimplificationTreeSizeReduction, 2.8s HoareSimplificationTime, 6 FomulaSimplificationsInter, 4817 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s 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: 0.9s, 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: 0.7s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, 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: 0.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.7s, 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! [2023-11-19 04:49:40,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d0f18ac-cc95-42a2-9190-572bf479cf0c/bin/utaipan-verify-t7M7D8N6sZ/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