./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd9bd7b6c1446abd728b90c98a54cb367face4c5994cfeca4979c2dbc50ad4d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 13:11:29,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 13:11:29,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 13:11:29,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 13:11:29,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 13:11:29,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 13:11:29,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 13:11:29,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 13:11:29,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 13:11:29,776 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 13:11:29,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 13:11:29,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 13:11:29,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 13:11:29,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 13:11:29,779 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 13:11:29,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 13:11:29,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 13:11:29,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 13:11:29,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 13:11:29,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 13:11:29,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 13:11:29,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 13:11:29,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 13:11:29,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 13:11:29,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 13:11:29,784 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 13:11:29,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 13:11:29,784 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 13:11:29,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 13:11:29,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 13:11:29,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 13:11:29,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 13:11:29,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 13:11:29,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 13:11:29,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:11:29,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 13:11:29,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 13:11:29,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 13:11:29,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 13:11:29,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 13:11:29,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 13:11:29,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 13:11:29,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 13:11:29,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 13:11:29,788 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd9bd7b6c1446abd728b90c98a54cb367face4c5994cfeca4979c2dbc50ad4d3 [2024-10-13 13:11:29,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 13:11:29,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 13:11:29,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 13:11:29,997 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 13:11:29,998 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 13:11:29,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all.i [2024-10-13 13:11:31,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 13:11:31,363 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 13:11:31,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_remove_all.i [2024-10-13 13:11:31,375 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b62150/38a6ee8d710b4d0199df8edae25c0513/FLAG515e083f4 [2024-10-13 13:11:31,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b62150/38a6ee8d710b4d0199df8edae25c0513 [2024-10-13 13:11:31,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 13:11:31,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 13:11:31,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 13:11:31,740 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 13:11:31,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 13:11:31,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:31" (1/1) ... [2024-10-13 13:11:31,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c65ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:31, skipping insertion in model container [2024-10-13 13:11:31,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:11:31" (1/1) ... [2024-10-13 13:11:31,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 13:11:32,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:11:32,051 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 13:11:32,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:11:32,110 INFO L204 MainTranslator]: Completed translation [2024-10-13 13:11:32,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32 WrapperNode [2024-10-13 13:11:32,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 13:11:32,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 13:11:32,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 13:11:32,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 13:11:32,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,152 INFO L138 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2024-10-13 13:11:32,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 13:11:32,155 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 13:11:32,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 13:11:32,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 13:11:32,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,190 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 8, 10]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 7 writes are split as follows [0, 5, 2]. [2024-10-13 13:11:32,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 13:11:32,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 13:11:32,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 13:11:32,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 13:11:32,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (1/1) ... [2024-10-13 13:11:32,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:11:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:11:32,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 13:11:32,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 13:11:32,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-10-13 13:11:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 13:11:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-13 13:11:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-13 13:11:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 13:11:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 13:11:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 13:11:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 13:11:32,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 13:11:32,375 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 13:11:32,377 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 13:11:32,538 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-10-13 13:11:32,539 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 13:11:32,571 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 13:11:32,574 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 13:11:32,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:32 BoogieIcfgContainer [2024-10-13 13:11:32,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 13:11:32,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 13:11:32,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 13:11:32,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 13:11:32,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:11:31" (1/3) ... [2024-10-13 13:11:32,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2d19db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:11:32, skipping insertion in model container [2024-10-13 13:11:32,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:11:32" (2/3) ... [2024-10-13 13:11:32,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2d19db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:11:32, skipping insertion in model container [2024-10-13 13:11:32,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:32" (3/3) ... [2024-10-13 13:11:32,586 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all.i [2024-10-13 13:11:32,598 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 13:11:32,598 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-13 13:11:32,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 13:11:32,644 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, 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;@37edeee5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 13:11:32,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 13:11:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.608695652173913) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:32,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 13:11:32,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:32,658 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:32,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:32,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash -556508954, now seen corresponding path program 1 times [2024-10-13 13:11:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:32,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404840566] [2024-10-13 13:11:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:32,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:11:32,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404840566] [2024-10-13 13:11:32,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404840566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:32,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:11:32,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 13:11:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476097364] [2024-10-13 13:11:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:32,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 13:11:32,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:32,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 13:11:32,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 13:11:32,969 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.608695652173913) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 13:11:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:33,047 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2024-10-13 13:11:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 13:11:33,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-13 13:11:33,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:33,054 INFO L225 Difference]: With dead ends: 47 [2024-10-13 13:11:33,055 INFO L226 Difference]: Without dead ends: 24 [2024-10-13 13:11:33,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 13:11:33,060 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:33,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-13 13:11:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-13 13:11:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-13 13:11:33,086 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2024-10-13 13:11:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:33,086 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-13 13:11:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 13:11:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-13 13:11:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 13:11:33,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:33,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:33,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 13:11:33,088 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:33,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -842800464, now seen corresponding path program 1 times [2024-10-13 13:11:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:33,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252388207] [2024-10-13 13:11:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:33,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 13:11:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252388207] [2024-10-13 13:11:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252388207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:33,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:11:33,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:11:33,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760836782] [2024-10-13 13:11:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:33,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 13:11:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:33,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 13:11:33,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 13:11:33,232 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 13:11:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:33,268 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-10-13 13:11:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 13:11:33,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-13 13:11:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:33,269 INFO L225 Difference]: With dead ends: 38 [2024-10-13 13:11:33,269 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 13:11:33,270 INFO L431 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 [2024-10-13 13:11:33,270 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:33,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 13:11:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-10-13 13:11:33,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:33,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-10-13 13:11:33,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 12 [2024-10-13 13:11:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:33,279 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-10-13 13:11:33,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 13:11:33,279 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-10-13 13:11:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-13 13:11:33,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:33,280 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:33,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 13:11:33,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:33,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1406087748, now seen corresponding path program 1 times [2024-10-13 13:11:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:33,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137012284] [2024-10-13 13:11:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 13:11:33,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:33,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137012284] [2024-10-13 13:11:33,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137012284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:33,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:11:33,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:11:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092454252] [2024-10-13 13:11:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:33,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:11:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:11:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:11:33,392 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:33,444 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-10-13 13:11:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:11:33,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-10-13 13:11:33,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:33,445 INFO L225 Difference]: With dead ends: 31 [2024-10-13 13:11:33,445 INFO L226 Difference]: Without dead ends: 29 [2024-10-13 13:11:33,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:11:33,446 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:33,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 68 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-13 13:11:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-13 13:11:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 13:11:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-10-13 13:11:33,454 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 13 [2024-10-13 13:11:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:33,454 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-10-13 13:11:33,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-10-13 13:11:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-13 13:11:33,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:33,455 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:33,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 13:11:33,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:33,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1795542649, now seen corresponding path program 1 times [2024-10-13 13:11:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:33,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363974481] [2024-10-13 13:11:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:33,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:33,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363974481] [2024-10-13 13:11:33,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363974481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:33,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 13:11:33,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 13:11:33,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700590733] [2024-10-13 13:11:33,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:33,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:11:33,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:11:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:11:33,586 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:33,633 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-10-13 13:11:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:11:33,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-10-13 13:11:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:33,637 INFO L225 Difference]: With dead ends: 39 [2024-10-13 13:11:33,637 INFO L226 Difference]: Without dead ends: 37 [2024-10-13 13:11:33,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 13:11:33,639 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:33,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-13 13:11:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-13 13:11:33,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 13:11:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2024-10-13 13:11:33,647 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 20 [2024-10-13 13:11:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:33,647 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2024-10-13 13:11:33,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:33,648 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2024-10-13 13:11:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 13:11:33,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:33,648 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:33,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 13:11:33,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:33,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1935851085, now seen corresponding path program 1 times [2024-10-13 13:11:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875180637] [2024-10-13 13:11:33,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:33,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-13 13:11:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-13 13:11:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875180637] [2024-10-13 13:11:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875180637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:11:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112213528] [2024-10-13 13:11:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:33,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:11:33,848 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:11:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 13:11:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:33,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 13:11:33,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:11:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 13:11:34,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:11:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112213528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:34,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:11:34,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2024-10-13 13:11:34,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806093393] [2024-10-13 13:11:34,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:34,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 13:11:34,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 13:11:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 13:11:34,016 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 13:11:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:34,043 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2024-10-13 13:11:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 13:11:34,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-10-13 13:11:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:34,045 INFO L225 Difference]: With dead ends: 60 [2024-10-13 13:11:34,045 INFO L226 Difference]: Without dead ends: 31 [2024-10-13 13:11:34,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 13:11:34,046 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:34,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-13 13:11:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-13 13:11:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-10-13 13:11:34,049 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2024-10-13 13:11:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:34,049 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-10-13 13:11:34,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-13 13:11:34,050 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-10-13 13:11:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 13:11:34,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:34,050 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:34,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 13:11:34,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:34,254 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:34,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2028695, now seen corresponding path program 1 times [2024-10-13 13:11:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:34,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294057195] [2024-10-13 13:11:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294057195] [2024-10-13 13:11:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294057195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:11:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554505317] [2024-10-13 13:11:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:11:34,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:11:34,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 13:11:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 13:11:34,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:11:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:34,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 13:11:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554505317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 13:11:34,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 13:11:34,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2024-10-13 13:11:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662293507] [2024-10-13 13:11:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 13:11:34,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 13:11:34,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 13:11:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:11:34,502 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:34,537 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-10-13 13:11:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 13:11:34,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-10-13 13:11:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:34,539 INFO L225 Difference]: With dead ends: 31 [2024-10-13 13:11:34,539 INFO L226 Difference]: Without dead ends: 30 [2024-10-13 13:11:34,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 13:11:34,540 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:34,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 86 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-13 13:11:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-13 13:11:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-10-13 13:11:34,553 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 25 [2024-10-13 13:11:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:34,554 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-10-13 13:11:34,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-10-13 13:11:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-13 13:11:34,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:34,554 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:34,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 13:11:34,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 13:11:34,755 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:34,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:34,756 INFO L85 PathProgramCache]: Analyzing trace with hash 62889634, now seen corresponding path program 1 times [2024-10-13 13:11:34,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:34,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610844280] [2024-10-13 13:11:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:34,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610844280] [2024-10-13 13:11:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610844280] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:11:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057453265] [2024-10-13 13:11:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:34,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:34,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:11:34,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:11:34,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 13:11:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:34,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 13:11:34,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:11:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:35,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:11:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 13:11:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057453265] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:11:35,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:11:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-10-13 13:11:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931694466] [2024-10-13 13:11:35,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:11:35,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 13:11:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 13:11:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-13 13:11:35,063 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:35,122 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2024-10-13 13:11:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 13:11:35,123 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-10-13 13:11:35,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:35,124 INFO L225 Difference]: With dead ends: 55 [2024-10-13 13:11:35,124 INFO L226 Difference]: Without dead ends: 54 [2024-10-13 13:11:35,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-13 13:11:35,125 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:35,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 154 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 13:11:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-13 13:11:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-13 13:11:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 13:11:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-10-13 13:11:35,130 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 26 [2024-10-13 13:11:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:35,130 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-10-13 13:11:35,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 13:11:35,130 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-10-13 13:11:35,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-13 13:11:35,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:11:35,134 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:35,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 13:11:35,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:35,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-10-13 13:11:35,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:11:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 95693746, now seen corresponding path program 2 times [2024-10-13 13:11:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:11:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18225869] [2024-10-13 13:11:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:11:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:11:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:35,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-13 13:11:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:35,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 13:11:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 13:11:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-13 13:11:35,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 13:11:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18225869] [2024-10-13 13:11:35,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18225869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 13:11:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352787945] [2024-10-13 13:11:35,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 13:11:35,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:35,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:11:35,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 13:11:35,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 13:11:35,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 13:11:35,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 13:11:35,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 13:11:35,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 13:11:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-13 13:11:35,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 13:11:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-13 13:11:35,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352787945] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 13:11:35,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 13:11:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-10-13 13:11:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4753508] [2024-10-13 13:11:35,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 13:11:35,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 13:11:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 13:11:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 13:11:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-10-13 13:11:35,788 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-13 13:11:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 13:11:35,851 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-10-13 13:11:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 13:11:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2024-10-13 13:11:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 13:11:35,852 INFO L225 Difference]: With dead ends: 54 [2024-10-13 13:11:35,852 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 13:11:35,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-13 13:11:35,853 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 13:11:35,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 13:11:35,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 13:11:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 13:11:35,854 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) [2024-10-13 13:11:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 13:11:35,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2024-10-13 13:11:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 13:11:35,854 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 13:11:35,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-13 13:11:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 13:11:35,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 13:11:35,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-10-13 13:11:35,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-10-13 13:11:35,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-10-13 13:11:35,857 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-10-13 13:11:35,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 13:11:36,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 13:11:36,061 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-10-13 13:11:36,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 13:11:36,138 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 13:11:36,150 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~i~0 [2024-10-13 13:11:36,151 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~len~0 [2024-10-13 13:11:36,151 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~i~0 [2024-10-13 13:11:36,151 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~len~0 [2024-10-13 13:11:36,155 WARN L155 FloydHoareUtils]: Requires clause for node_create contained old-variable. Original clause: (and (= |old(#length)| |#length|) (= |old(#memory_$Pointer$#1.base)| |#memory_$Pointer$#1.base|) (= |#memory_int#1| |old(#memory_int#1)|) (= |old(#memory_$Pointer$#1.offset)| |#memory_$Pointer$#1.offset|) (= |old(#valid)| |#valid|)) Eliminated clause: true [2024-10-13 13:11:36,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:11:36 BoogieIcfgContainer [2024-10-13 13:11:36,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 13:11:36,157 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 13:11:36,158 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 13:11:36,158 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 13:11:36,158 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:11:32" (3/4) ... [2024-10-13 13:11:36,160 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 13:11:36,163 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2024-10-13 13:11:36,166 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-10-13 13:11:36,168 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-13 13:11:36,168 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 13:11:36,168 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-13 13:11:36,238 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 13:11:36,239 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 13:11:36,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 13:11:36,239 INFO L158 Benchmark]: Toolchain (without parser) took 4500.67ms. Allocated memory was 136.3MB in the beginning and 218.1MB in the end (delta: 81.8MB). Free memory was 64.1MB in the beginning and 126.9MB in the end (delta: -62.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,239 INFO L158 Benchmark]: CDTParser took 1.17ms. Allocated memory is still 136.3MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:11:36,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.61ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 64.0MB in the beginning and 139.8MB in the end (delta: -75.8MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,240 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.61ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 137.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,240 INFO L158 Benchmark]: Boogie Preprocessor took 48.59ms. Allocated memory is still 178.3MB. Free memory was 137.7MB in the beginning and 134.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,240 INFO L158 Benchmark]: RCFGBuilder took 371.16ms. Allocated memory is still 178.3MB. Free memory was 134.8MB in the beginning and 115.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,240 INFO L158 Benchmark]: TraceAbstraction took 3580.12ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 115.2MB in the beginning and 133.2MB in the end (delta: -18.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,241 INFO L158 Benchmark]: Witness Printer took 81.38ms. Allocated memory is still 218.1MB. Free memory was 132.1MB in the beginning and 126.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 13:11:36,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17ms. Allocated memory is still 136.3MB. Free memory is still 87.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.61ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 64.0MB in the beginning and 139.8MB in the end (delta: -75.8MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.61ms. Allocated memory is still 178.3MB. Free memory was 139.8MB in the beginning and 137.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.59ms. Allocated memory is still 178.3MB. Free memory was 137.7MB in the beginning and 134.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 371.16ms. Allocated memory is still 178.3MB. Free memory was 134.8MB in the beginning and 115.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3580.12ms. Allocated memory was 178.3MB in the beginning and 218.1MB in the end (delta: 39.8MB). Free memory was 115.2MB in the beginning and 133.2MB in the end (delta: -18.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 81.38ms. Allocated memory is still 218.1MB. Free memory was 132.1MB in the beginning and 126.9MB in the end (delta: 5.2MB). 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: Unknown variable: ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~len~0 * 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: 590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 617]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 617]: 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 2 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 629 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 466 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 340 IncrementalHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 163 mSDtfsCounter, 340 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 283 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 336 ConstructedInterpolants, 0 QuantifiedInterpolants, 939 SizeOfPredicates, 3 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 169/238 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 615]: Loop Invariant Derived loop invariant: ((((1 <= i) && (i <= 2147483646)) && (len <= 2)) || ((i == 0) && (len <= 2))) - InvariantResult [Line: 602]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: (((len <= 2) && (len <= 1)) || ((2 == len) && (len == 2))) RESULT: Ultimate proved your program to be correct! [2024-10-13 13:11:36,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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