./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-lit/mcmillan2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/mcmillan2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:57:27,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:27,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-12 00:57:28,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:28,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:28,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:28,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:28,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:28,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:28,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:28,046 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:28,047 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:28,048 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:28,048 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:57:28,049 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:28,049 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:28,050 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:57:28,051 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:57:28,051 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:28,052 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:57:28,052 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:57:28,053 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:57:28,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:28,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:57:28,055 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:57:28,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:28,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:57:28,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:28,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:57:28,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:28,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:57:28,059 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:57:28,059 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:57:28,071 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:57:28,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:57:28,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:28,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:28,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:28,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:28,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:28,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:28,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:57:28,078 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:57:28,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:57:28,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:57:28,079 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:28,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:28,080 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_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be [2023-11-12 00:57:28,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:28,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:28,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:28,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:28,486 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:28,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loop-lit/mcmillan2006.i [2023-11-12 00:57:31,510 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:31,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:31,807 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/sv-benchmarks/c/loop-lit/mcmillan2006.i [2023-11-12 00:57:31,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/data/ed320a5d5/222366acd21a40308ceec5f7b95263cb/FLAG2db92d629 [2023-11-12 00:57:31,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/data/ed320a5d5/222366acd21a40308ceec5f7b95263cb [2023-11-12 00:57:31,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:31,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:31,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:31,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:31,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:31,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:31" (1/1) ... [2023-11-12 00:57:31,854 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79adb9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:31, skipping insertion in model container [2023-11-12 00:57:31,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:31" (1/1) ... [2023-11-12 00:57:31,879 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:32,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:32,077 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:57:32,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:32,107 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:57:32,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32 WrapperNode [2023-11-12 00:57:32,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:32,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:32,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:57:32,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:57:32,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,159 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-12 00:57:32,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:32,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:57:32,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:57:32,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:57:32,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:57:32,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:57:32,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:57:32,202 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:57:32,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (1/1) ... [2023-11-12 00:57:32,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:32,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:57:32,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:57:32,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:57:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:57:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:57:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:57:32,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:57:32,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:57:32,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:57:32,416 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:57:32,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:57:32,580 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:57:32,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:57:32,656 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 00:57:32,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:32 BoogieIcfgContainer [2023-11-12 00:57:32,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:57:32,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:57:32,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:57:32,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:57:32,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:57:31" (1/3) ... [2023-11-12 00:57:32,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a751b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:32, skipping insertion in model container [2023-11-12 00:57:32,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:32" (2/3) ... [2023-11-12 00:57:32,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a751b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:32, skipping insertion in model container [2023-11-12 00:57:32,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:32" (3/3) ... [2023-11-12 00:57:32,669 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2023-11-12 00:57:32,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:57:32,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-12 00:57:32,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:32,757 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;@4beb58a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:32,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-12 00:57:32,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:57:32,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:32,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 00:57:32,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:32,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2898456, now seen corresponding path program 1 times [2023-11-12 00:57:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:32,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337937243] [2023-11-12 00:57:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:33,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337937243] [2023-11-12 00:57:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337937243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:33,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:33,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572201148] [2023-11-12 00:57:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:33,162 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:33,233 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-11-12 00:57:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-12 00:57:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:33,243 INFO L225 Difference]: With dead ends: 19 [2023-11-12 00:57:33,243 INFO L226 Difference]: Without dead ends: 15 [2023-11-12 00:57:33,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:33,250 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:33,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-12 00:57:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-12 00:57:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-12 00:57:33,285 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 4 [2023-11-12 00:57:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:33,286 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-12 00:57:33,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-12 00:57:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:57:33,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:33,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 00:57:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:57:33,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:33,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:33,289 INFO L85 PathProgramCache]: Analyzing trace with hash 89859753, now seen corresponding path program 1 times [2023-11-12 00:57:33,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333143399] [2023-11-12 00:57:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:33,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:33,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333143399] [2023-11-12 00:57:33,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333143399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:33,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:33,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:57:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747387517] [2023-11-12 00:57:33,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:33,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:33,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:33,396 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:33,433 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2023-11-12 00:57:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-12 00:57:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:33,435 INFO L225 Difference]: With dead ends: 20 [2023-11-12 00:57:33,436 INFO L226 Difference]: Without dead ends: 18 [2023-11-12 00:57:33,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:57:33,438 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:33,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-12 00:57:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-12 00:57:33,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-12 00:57:33,445 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 5 [2023-11-12 00:57:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:33,445 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-12 00:57:33,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-12 00:57:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:57:33,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:33,447 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-12 00:57:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:57:33,448 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:33,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash 448608750, now seen corresponding path program 1 times [2023-11-12 00:57:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027430237] [2023-11-12 00:57:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:33,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:33,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027430237] [2023-11-12 00:57:33,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027430237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:57:33,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934243101] [2023-11-12 00:57:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:33,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:33,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:33,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:57:33,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:57:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:33,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:57:33,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:33,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:57:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934243101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:57:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-12 00:57:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961199056] [2023-11-12 00:57:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:57:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:57:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:57:33,760 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:33,819 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-11-12 00:57:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 00:57:33,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2023-11-12 00:57:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:33,821 INFO L225 Difference]: With dead ends: 18 [2023-11-12 00:57:33,821 INFO L226 Difference]: Without dead ends: 17 [2023-11-12 00:57:33,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:57:33,824 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:33,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-12 00:57:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-12 00:57:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-12 00:57:33,830 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 7 [2023-11-12 00:57:33,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:33,831 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-12 00:57:33,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-12 00:57:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:57:33,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:33,832 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-12 00:57:33,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:57:34,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 00:57:34,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:34,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1021969413, now seen corresponding path program 1 times [2023-11-12 00:57:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:34,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254251444] [2023-11-12 00:57:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:34,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:34,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:34,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254251444] [2023-11-12 00:57:34,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254251444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:57:34,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858467291] [2023-11-12 00:57:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:34,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:34,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:34,192 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:57:34,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:57:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:34,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:57:34,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:34,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:57:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:34,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858467291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:57:34,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [632604384] [2023-11-12 00:57:34,458 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-12 00:57:34,458 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:57:34,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:57:34,469 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:57:34,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:57:35,203 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:57:35,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '242#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000) (<= 2147483647 |ULTIMATE.start_main_#t~post3#1|))' at error location [2023-11-12 00:57:35,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:57:35,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:57:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-12 00:57:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867539623] [2023-11-12 00:57:35,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:57:35,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:57:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:57:35,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:57:35,403 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:35,523 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2023-11-12 00:57:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:57:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:57:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:35,526 INFO L225 Difference]: With dead ends: 27 [2023-11-12 00:57:35,526 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:57:35,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:57:35,530 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:35,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 17 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:57:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:57:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-12 00:57:35,546 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2023-11-12 00:57:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:35,547 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-12 00:57:35,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-12 00:57:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:57:35,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:35,550 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:35,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:57:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:35,757 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:35,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1247362231, now seen corresponding path program 1 times [2023-11-12 00:57:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:35,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715624574] [2023-11-12 00:57:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:35,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:57:35,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:35,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715624574] [2023-11-12 00:57:35,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715624574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:35,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:57:35,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886711037] [2023-11-12 00:57:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:57:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:57:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:35,858 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:35,890 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-12 00:57:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:57:35,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:57:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:35,892 INFO L225 Difference]: With dead ends: 34 [2023-11-12 00:57:35,892 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:57:35,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:57:35,894 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:35,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:57:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:57:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-12 00:57:35,907 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 8 [2023-11-12 00:57:35,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:35,908 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-12 00:57:35,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-12 00:57:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:57:35,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:35,913 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:57:35,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 00:57:35,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-11-12 00:57:35,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1306893939, now seen corresponding path program 1 times [2023-11-12 00:57:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:57:35,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007749725] [2023-11-12 00:57:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:57:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:57:36,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:57:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007749725] [2023-11-12 00:57:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007749725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:57:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898534325] [2023-11-12 00:57:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:36,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:57:36,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:36,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:57:36,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:57:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:36,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:57:36,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:36,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:57:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:57:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898534325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:57:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730014486] [2023-11-12 00:57:36,298 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-12 00:57:36,298 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:57:36,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:57:36,299 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:57:36,299 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:57:36,759 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:57:37,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [730014486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:37,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:57:37,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 8, 8] total 21 [2023-11-12 00:57:37,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228414289] [2023-11-12 00:57:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:37,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:57:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:57:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:57:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-11-12 00:57:37,096 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:57:37,215 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-11-12 00:57:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:57:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 11 [2023-11-12 00:57:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:57:37,216 INFO L225 Difference]: With dead ends: 26 [2023-11-12 00:57:37,216 INFO L226 Difference]: Without dead ends: 0 [2023-11-12 00:57:37,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:57:37,218 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:57:37,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:57:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-12 00:57:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-12 00:57:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-12 00:57:37,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-11-12 00:57:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:57:37,220 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-12 00:57:37,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:57:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-12 00:57:37,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-12 00:57:37,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2023-11-12 00:57:37,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2023-11-12 00:57:37,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2023-11-12 00:57:37,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2023-11-12 00:57:37,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:57:37,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 00:57:37,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-12 00:57:37,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-12 00:57:37,587 INFO L899 garLoopResultBuilder]: For program point L31-3(line 31) no Hoare annotation was computed. [2023-11-12 00:57:37,587 INFO L899 garLoopResultBuilder]: For program point L31-4(line 31) no Hoare annotation was computed. [2023-11-12 00:57:37,587 INFO L895 garLoopResultBuilder]: At program point L31-5(line 31) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~i~1#1| 0) (<= |ULTIMATE.start_main_~n~0#1| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~i~1#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 1000) (<= 0 |ULTIMATE.start_main_~n~0#1|))) [2023-11-12 00:57:37,587 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 26 33) no Hoare annotation was computed. [2023-11-12 00:57:37,587 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:57:37,587 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 30) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 31) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point L30-3(line 30) no Hoare annotation was computed. [2023-11-12 00:57:37,588 INFO L899 garLoopResultBuilder]: For program point L30-4(line 30) no Hoare annotation was computed. [2023-11-12 00:57:37,589 INFO L895 garLoopResultBuilder]: At program point L30-5(line 30) the Hoare annotation is: (let ((.cse0 (<= 1 |#StackHeapBarrier|)) (.cse1 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse3 (<= |ULTIMATE.start_main_~n~0#1| 1000)) (.cse4 (<= 0 |ULTIMATE.start_main_~n~0#1|))) (or (let ((.cse2 (select |#memory_int| 1))) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0) (= 2 (select |#length| 1)) .cse1 (= 9 (select |#length| 2)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse2 0) 48) .cse3 .cse4 (= (select .cse2 1) 0))) (and .cse0 (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) .cse1 .cse3 .cse4))) [2023-11-12 00:57:37,592 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-12 00:57:37,594 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:57:37,611 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:37,612 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:37,612 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:37,613 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:37,613 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:37,614 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:37,614 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:37,616 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:37,616 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:37,616 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:37,617 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:37,617 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:37,617 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:37,617 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:37,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:57:37 BoogieIcfgContainer [2023-11-12 00:57:37,620 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:57:37,621 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:57:37,621 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:57:37,622 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:57:37,622 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:32" (3/4) ... [2023-11-12 00:57:37,624 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-12 00:57:37,633 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-12 00:57:37,634 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-12 00:57:37,634 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-12 00:57:37,634 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-12 00:57:37,745 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:57:37,746 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/witness.yml [2023-11-12 00:57:37,746 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:57:37,747 INFO L158 Benchmark]: Toolchain (without parser) took 5903.42ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 133.4MB in the beginning and 121.6MB in the end (delta: 11.8MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,747 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:57:37,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.74ms. Allocated memory is still 163.6MB. Free memory was 133.0MB in the beginning and 122.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.71ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 120.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,750 INFO L158 Benchmark]: Boogie Preprocessor took 40.76ms. Allocated memory is still 163.6MB. Free memory was 120.9MB in the beginning and 119.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,751 INFO L158 Benchmark]: RCFGBuilder took 457.49ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 123.9MB in the end (delta: -4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,752 INFO L158 Benchmark]: TraceAbstraction took 4958.90ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 123.4MB in the beginning and 127.9MB in the end (delta: -4.4MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,752 INFO L158 Benchmark]: Witness Printer took 125.27ms. Allocated memory is still 197.1MB. Free memory was 127.9MB in the beginning and 121.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:57:37,755 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.74ms. Allocated memory is still 163.6MB. Free memory was 133.0MB in the beginning and 122.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.71ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 120.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.76ms. Allocated memory is still 163.6MB. Free memory was 120.9MB in the beginning and 119.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 457.49ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 123.9MB in the end (delta: -4.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4958.90ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 123.4MB in the beginning and 127.9MB in the end (delta: -4.4MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Witness Printer took 125.27ms. Allocated memory is still 197.1MB. Free memory was 127.9MB in the beginning and 121.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * 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: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 98 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 34 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 99 HoareAnnotationTreeSize, 2 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 70 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 9 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 9/24 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: 0.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 28, TOOLS_POST_TIME: 0.4s, 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: 28, TOOLS_QUANTIFIERELIM_TIME: 0.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 52, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, 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: 104, DAG_COMPRESSION_RETAINED_NODES: 33, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2023-11-12 00:57:37,785 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:37,787 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:37,790 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:37,790 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:37,793 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:37,793 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:37,794 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-12 00:57:37,794 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-12 00:57:37,795 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-12 00:57:37,795 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-12 00:57:37,795 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-12 00:57:37,795 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-12 00:57:37,795 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-12 00:57:37,796 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated Derived loop invariant: ((((i == 0) && (n <= 1000)) && (0 <= n)) || ((((1 <= i) && (i <= 2147483647)) && (n <= 1000)) && (0 <= n))) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((i == 0) && (n <= 0)) || (((0 <= i) && (n <= 1000)) && (0 <= n))) RESULT: Ultimate proved your program to be correct! [2023-11-12 00:57:37,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27df0487-d16c-456f-be80-ec66ced2ed25/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE