./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU --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 64bit --witnessprinter.graph.data.programhash fc483b08189ee3c98902d05e6dbaf5e8d67294309bb86f0f1cb0c68cd8f4471f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:49,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:49,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-31 22:01:49,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:49,791 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:49,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:49,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:49,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:49,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:49,826 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:49,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:49,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:49,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:49,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:49,829 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:49,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:49,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:49,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:49,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:49,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:49,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:49,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:49,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:49,834 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:01:49,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:01:49,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:49,836 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:49,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:49,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:49,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:49,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:49,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:49,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:49,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:49,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:49,840 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:49,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:49,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:49,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:49,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:49,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:49,843 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc483b08189ee3c98902d05e6dbaf5e8d67294309bb86f0f1cb0c68cd8f4471f [2024-10-31 22:01:50,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:50,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:50,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:50,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:50,179 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:50,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-numeric/recHanoi02-1.c Unable to find full path for "g++" [2024-10-31 22:01:52,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:52,722 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:52,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/sv-benchmarks/c/termination-numeric/recHanoi02-1.c [2024-10-31 22:01:52,737 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/7cb9626ff/3fbf534c426447fbaadfe7565f12a255/FLAG3a234b260 [2024-10-31 22:01:53,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/data/7cb9626ff/3fbf534c426447fbaadfe7565f12a255 [2024-10-31 22:01:53,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:53,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:53,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:53,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:53,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:53,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796f0c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53, skipping insertion in model container [2024-10-31 22:01:53,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:53,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:53,284 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:53,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:53,316 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:53,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53 WrapperNode [2024-10-31 22:01:53,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:53,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:53,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:53,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:53,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,354 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-10-31 22:01:53,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:53,355 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:53,355 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:53,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:53,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,367 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,378 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:01:53,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:53,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:53,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:53,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:53,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (1/1) ... [2024-10-31 22:01:53,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:53,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:53,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:53,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:53,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-10-31 22:01:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-10-31 22:01:53,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:53,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:53,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:53,547 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:53,550 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:53,774 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-10-31 22:01:53,775 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:53,788 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:53,790 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:01:53,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:53 BoogieIcfgContainer [2024-10-31 22:01:53,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:53,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:53,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:53,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:53,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:53" (1/3) ... [2024-10-31 22:01:53,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae86e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:53, skipping insertion in model container [2024-10-31 22:01:53,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:53" (2/3) ... [2024-10-31 22:01:53,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae86e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:53, skipping insertion in model container [2024-10-31 22:01:53,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:53" (3/3) ... [2024-10-31 22:01:53,805 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02-1.c [2024-10-31 22:01:53,826 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:53,827 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-31 22:01:53,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:53,939 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;@2648659e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:53,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:01:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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) [2024-10-31 22:01:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:01:53,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:53,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:53,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:53,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1325865203, now seen corresponding path program 1 times [2024-10-31 22:01:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:53,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062934264] [2024-10-31 22:01:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062934264] [2024-10-31 22:01:54,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062934264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:54,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:01:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744214186] [2024-10-31 22:01:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:54,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:01:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:01:54,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:01:54,303 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 states have internal predecessors, (28), 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 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:54,431 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2024-10-31 22:01:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:01:54,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:01:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:54,443 INFO L225 Difference]: With dead ends: 53 [2024-10-31 22:01:54,443 INFO L226 Difference]: Without dead ends: 37 [2024-10-31 22:01:54,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:54,451 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 31 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:54,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 90 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:01:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-31 22:01:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-10-31 22:01:54,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.5) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:01:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-10-31 22:01:54,503 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 7 [2024-10-31 22:01:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:54,504 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-10-31 22:01:54,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-10-31 22:01:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:01:54,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:54,506 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:54,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:54,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:54,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:54,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1847851705, now seen corresponding path program 1 times [2024-10-31 22:01:54,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:54,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196445928] [2024-10-31 22:01:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196445928] [2024-10-31 22:01:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196445928] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:54,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:54,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:01:54,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535719108] [2024-10-31 22:01:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:54,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:01:54,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:01:54,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:01:54,697 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:54,768 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-10-31 22:01:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:01:54,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-31 22:01:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:54,771 INFO L225 Difference]: With dead ends: 34 [2024-10-31 22:01:54,771 INFO L226 Difference]: Without dead ends: 33 [2024-10-31 22:01:54,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:01:54,775 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:54,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-31 22:01:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-10-31 22:01:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:01:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-10-31 22:01:54,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 8 [2024-10-31 22:01:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:54,799 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-10-31 22:01:54,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-10-31 22:01:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:01:54,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:54,800 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:54,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:54,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:54,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1910973905, now seen corresponding path program 1 times [2024-10-31 22:01:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913455548] [2024-10-31 22:01:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:54,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:54,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913455548] [2024-10-31 22:01:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913455548] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:54,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837076876] [2024-10-31 22:01:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:54,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:54,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:54,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:54,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:01:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:01:55,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:55,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837076876] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:55,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-31 22:01:55,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22160682] [2024-10-31 22:01:55,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:55,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:01:55,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:01:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:55,289 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:55,553 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2024-10-31 22:01:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:01:55,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 22:01:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:55,557 INFO L225 Difference]: With dead ends: 92 [2024-10-31 22:01:55,558 INFO L226 Difference]: Without dead ends: 91 [2024-10-31 22:01:55,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:01:55,560 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 185 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:55,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 137 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:01:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-31 22:01:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2024-10-31 22:01:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 56 states have internal predecessors, (76), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-31 22:01:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2024-10-31 22:01:55,594 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 12 [2024-10-31 22:01:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:55,594 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2024-10-31 22:01:55,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2024-10-31 22:01:55,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-31 22:01:55,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:55,597 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:55,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:55,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-31 22:01:55,801 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:55,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash 31630572, now seen corresponding path program 1 times [2024-10-31 22:01:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:55,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360004043] [2024-10-31 22:01:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:55,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:01:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:01:55,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:55,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360004043] [2024-10-31 22:01:55,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360004043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:55,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:01:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411104985] [2024-10-31 22:01:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:55,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:01:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:01:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:55,963 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:01:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:56,011 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2024-10-31 22:01:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:01:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-10-31 22:01:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:56,018 INFO L225 Difference]: With dead ends: 104 [2024-10-31 22:01:56,019 INFO L226 Difference]: Without dead ends: 93 [2024-10-31 22:01:56,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:01:56,022 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:56,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 46 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-31 22:01:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-31 22:01:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 78 states have internal predecessors, (98), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-31 22:01:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2024-10-31 22:01:56,063 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 15 [2024-10-31 22:01:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:56,064 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2024-10-31 22:01:56,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:01:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2024-10-31 22:01:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:01:56,065 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:56,065 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-31 22:01:56,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:01:56,066 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:56,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash 254999565, now seen corresponding path program 2 times [2024-10-31 22:01:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124236313] [2024-10-31 22:01:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:56,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124236313] [2024-10-31 22:01:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124236313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388298845] [2024-10-31 22:01:56,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:01:56,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:56,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:56,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:56,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:01:56,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:01:56,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:01:56,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:01:56,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:56,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:01:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388298845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:56,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:56,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-10-31 22:01:56,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690129430] [2024-10-31 22:01:56,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:56,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 22:01:56,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:56,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 22:01:56,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:01:56,941 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:57,605 INFO L93 Difference]: Finished difference Result 248 states and 263 transitions. [2024-10-31 22:01:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:01:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-31 22:01:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:57,610 INFO L225 Difference]: With dead ends: 248 [2024-10-31 22:01:57,610 INFO L226 Difference]: Without dead ends: 247 [2024-10-31 22:01:57,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2024-10-31 22:01:57,615 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 518 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:57,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 285 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:01:57,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-10-31 22:01:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 207. [2024-10-31 22:01:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 174 states have internal predecessors, (224), 12 states have call successors, (12), 11 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 11 states have call successors, (21) [2024-10-31 22:01:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2024-10-31 22:01:57,691 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 27 [2024-10-31 22:01:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:57,692 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2024-10-31 22:01:57,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2024-10-31 22:01:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:01:57,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:57,698 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:57,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:57,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:57,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:57,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1975188344, now seen corresponding path program 1 times [2024-10-31 22:01:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:57,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700021975] [2024-10-31 22:01:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:57,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:01:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:01:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:58,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700021975] [2024-10-31 22:01:58,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700021975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:58,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358488378] [2024-10-31 22:01:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:58,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:58,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:58,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:58,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:01:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:58,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:58,247 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:01:58,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358488378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:58,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:01:58,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-31 22:01:58,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467001354] [2024-10-31 22:01:58,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:58,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:01:58,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:01:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:58,250 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:01:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:58,325 INFO L93 Difference]: Finished difference Result 207 states and 257 transitions. [2024-10-31 22:01:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:01:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-10-31 22:01:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:58,328 INFO L225 Difference]: With dead ends: 207 [2024-10-31 22:01:58,328 INFO L226 Difference]: Without dead ends: 205 [2024-10-31 22:01:58,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:01:58,330 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:58,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-10-31 22:01:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-10-31 22:01:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 172 states have internal predecessors, (202), 12 states have call successors, (12), 11 states have call predecessors, (12), 19 states have return successors, (21), 21 states have call predecessors, (21), 11 states have call successors, (21) [2024-10-31 22:01:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 235 transitions. [2024-10-31 22:01:58,358 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 235 transitions. Word has length 27 [2024-10-31 22:01:58,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:58,358 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 235 transitions. [2024-10-31 22:01:58,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:01:58,359 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 235 transitions. [2024-10-31 22:01:58,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-31 22:01:58,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:58,360 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:58,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:58,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:58,561 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:58,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1101296564, now seen corresponding path program 1 times [2024-10-31 22:01:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51160697] [2024-10-31 22:01:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:01:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:01:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:58,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:58,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51160697] [2024-10-31 22:01:58,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51160697] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:01:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184372054] [2024-10-31 22:01:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:58,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:58,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:01:58,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:01:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:58,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:01:58,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:01:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:58,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:01:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-31 22:01:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184372054] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:01:58,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:01:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-31 22:01:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447864460] [2024-10-31 22:01:58,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:01:58,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:01:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:01:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:58,992 INFO L87 Difference]: Start difference. First operand 205 states and 235 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 22:01:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:59,115 INFO L93 Difference]: Finished difference Result 409 states and 494 transitions. [2024-10-31 22:01:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:01:59,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2024-10-31 22:01:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:59,121 INFO L225 Difference]: With dead ends: 409 [2024-10-31 22:01:59,122 INFO L226 Difference]: Without dead ends: 344 [2024-10-31 22:01:59,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:01:59,124 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:59,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 92 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:01:59,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-31 22:01:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-31 22:01:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 290 states have (on average 1.0586206896551724) internal successors, (307), 287 states have internal predecessors, (307), 12 states have call successors, (12), 11 states have call predecessors, (12), 40 states have return successors, (45), 45 states have call predecessors, (45), 11 states have call successors, (45) [2024-10-31 22:01:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 364 transitions. [2024-10-31 22:01:59,183 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 364 transitions. Word has length 28 [2024-10-31 22:01:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:59,184 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 364 transitions. [2024-10-31 22:01:59,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 22:01:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 364 transitions. [2024-10-31 22:01:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-31 22:01:59,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:59,187 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2024-10-31 22:01:59,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:01:59,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:01:59,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:01:59,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1506759795, now seen corresponding path program 3 times [2024-10-31 22:01:59,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:59,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791874534] [2024-10-31 22:01:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:59,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:00,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791874534] [2024-10-31 22:02:00,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791874534] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:00,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837783858] [2024-10-31 22:02:00,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:02:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:00,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:00,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:00,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:02:00,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 22:02:00,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:02:00,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:02:00,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:00,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837783858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:01,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2024-10-31 22:02:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486698012] [2024-10-31 22:02:01,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:01,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-31 22:02:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-31 22:02:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2024-10-31 22:02:01,433 INFO L87 Difference]: Start difference. First operand 344 states and 364 transitions. Second operand has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:02,758 INFO L93 Difference]: Finished difference Result 823 states and 856 transitions. [2024-10-31 22:02:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-31 22:02:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-31 22:02:02,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:02,763 INFO L225 Difference]: With dead ends: 823 [2024-10-31 22:02:02,764 INFO L226 Difference]: Without dead ends: 822 [2024-10-31 22:02:02,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1337, Invalid=3493, Unknown=0, NotChecked=0, Total=4830 [2024-10-31 22:02:02,768 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1215 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:02,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 439 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:02:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-10-31 22:02:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 800. [2024-10-31 22:02:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 674 states have (on average 1.0608308605341246) internal successors, (715), 671 states have internal predecessors, (715), 24 states have call successors, (24), 23 states have call predecessors, (24), 100 states have return successors, (105), 105 states have call predecessors, (105), 23 states have call successors, (105) [2024-10-31 22:02:02,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 844 transitions. [2024-10-31 22:02:02,840 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 844 transitions. Word has length 57 [2024-10-31 22:02:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:02,841 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 844 transitions. [2024-10-31 22:02:02,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 844 transitions. [2024-10-31 22:02:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-31 22:02:02,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:02,845 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:02,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:02:03,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:03,046 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:02:03,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1895258048, now seen corresponding path program 2 times [2024-10-31 22:02:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:03,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389989517] [2024-10-31 22:02:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:03,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:02:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:02:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389989517] [2024-10-31 22:02:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389989517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240612620] [2024-10-31 22:02:03,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:02:03,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:03,482 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:03,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:02:03,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:02:03,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:02:03,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:02:03,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:02:03,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-31 22:02:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240612620] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:04,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:04,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-31 22:02:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972893250] [2024-10-31 22:02:04,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:04,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-31 22:02:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-31 22:02:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:02:04,577 INFO L87 Difference]: Start difference. First operand 800 states and 844 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-31 22:02:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:04,972 INFO L93 Difference]: Finished difference Result 1743 states and 1924 transitions. [2024-10-31 22:02:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-31 22:02:04,973 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 64 [2024-10-31 22:02:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:04,979 INFO L225 Difference]: With dead ends: 1743 [2024-10-31 22:02:04,979 INFO L226 Difference]: Without dead ends: 1439 [2024-10-31 22:02:04,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-10-31 22:02:04,982 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:04,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:02:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-31 22:02:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1439. [2024-10-31 22:02:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1226 states have (on average 1.0285481239804242) internal successors, (1261), 1217 states have internal predecessors, (1261), 24 states have call successors, (24), 23 states have call predecessors, (24), 187 states have return successors, (198), 198 states have call predecessors, (198), 23 states have call successors, (198) [2024-10-31 22:02:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1483 transitions. [2024-10-31 22:02:05,092 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1483 transitions. Word has length 64 [2024-10-31 22:02:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:05,093 INFO L471 AbstractCegarLoop]: Abstraction has 1439 states and 1483 transitions. [2024-10-31 22:02:05,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2024-10-31 22:02:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1483 transitions. [2024-10-31 22:02:05,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-31 22:02:05,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:05,098 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2024-10-31 22:02:05,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:02:05,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-31 22:02:05,302 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:02:05,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 314288781, now seen corresponding path program 4 times [2024-10-31 22:02:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:05,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318067296] [2024-10-31 22:02:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318067296] [2024-10-31 22:02:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318067296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161971675] [2024-10-31 22:02:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:02:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:07,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:07,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:02:07,264 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:02:07,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:02:07,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-31 22:02:07,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:07,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:02:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161971675] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:02:10,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:02:10,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2024-10-31 22:02:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451461699] [2024-10-31 22:02:10,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:02:10,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-10-31 22:02:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-10-31 22:02:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2024-10-31 22:02:10,393 INFO L87 Difference]: Start difference. First operand 1439 states and 1483 transitions. Second operand has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:14,437 INFO L93 Difference]: Finished difference Result 3406 states and 3475 transitions. [2024-10-31 22:02:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-10-31 22:02:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-10-31 22:02:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:14,452 INFO L225 Difference]: With dead ends: 3406 [2024-10-31 22:02:14,452 INFO L226 Difference]: Without dead ends: 3405 [2024-10-31 22:02:14,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5549, Invalid=14473, Unknown=0, NotChecked=0, Total=20022 [2024-10-31 22:02:14,459 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 2210 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:14,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 1097 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:02:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2024-10-31 22:02:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3359. [2024-10-31 22:02:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2858 states have (on average 1.0290412876137158) internal successors, (2941), 2849 states have internal predecessors, (2941), 48 states have call successors, (48), 47 states have call predecessors, (48), 451 states have return successors, (462), 462 states have call predecessors, (462), 47 states have call successors, (462) [2024-10-31 22:02:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 3451 transitions. [2024-10-31 22:02:14,682 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 3451 transitions. Word has length 117 [2024-10-31 22:02:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:14,684 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 3451 transitions. [2024-10-31 22:02:14,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 3451 transitions. [2024-10-31 22:02:14,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-31 22:02:14,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:14,691 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:14,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:14,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-31 22:02:14,892 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-10-31 22:02:14,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -227461568, now seen corresponding path program 3 times [2024-10-31 22:02:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:14,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015728412] [2024-10-31 22:02:14,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:14,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:02:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:15,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 22:02:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-31 22:02:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015728412] [2024-10-31 22:02:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015728412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:02:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083151389] [2024-10-31 22:02:16,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:02:16,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:02:16,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:16,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:02:16,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e21506be-65aa-41c7-b8ea-1435d466fd3d/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:02:16,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-31 22:02:16,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:02:16,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-31 22:02:16,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-10-31 22:02:16,721 INFO L311 TraceCheckSpWp]: Computing backward predicates...