./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB --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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:38:28,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:38:28,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-27 23:38:28,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:38:28,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:38:28,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:38:28,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:38:28,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:38:28,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:38:28,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:38:28,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:38:28,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:38:28,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:38:28,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:38:28,710 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:38:28,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:38:28,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:38:28,712 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:38:28,713 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:28,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:28,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:28,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:38:28,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:28,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:38:28,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:38:28,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:28,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:38:28,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:38:28,715 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:38:28,716 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2024-11-27 23:38:29,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:38:29,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:38:29,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:38:29,048 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:38:29,048 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:38:29,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2024-11-27 23:38:32,185 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/data/cbcc5905b/9af6b2d009cd4fee97ad630dc6dd37f3/FLAGba6cba4ba [2024-11-27 23:38:32,518 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:38:32,519 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/sv-benchmarks/c/termination-numeric/rec_counter3.c [2024-11-27 23:38:32,531 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/data/cbcc5905b/9af6b2d009cd4fee97ad630dc6dd37f3/FLAGba6cba4ba [2024-11-27 23:38:32,560 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/data/cbcc5905b/9af6b2d009cd4fee97ad630dc6dd37f3 [2024-11-27 23:38:32,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:38:32,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:38:32,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:32,568 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:38:32,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:38:32,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538ec60c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32, skipping insertion in model container [2024-11-27 23:38:32,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,596 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:38:32,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:32,813 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:38:32,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:32,848 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:38:32,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32 WrapperNode [2024-11-27 23:38:32,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:32,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:32,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:38:32,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:38:32,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,891 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-11-27 23:38:32,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:32,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:38:32,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:38:32,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,918 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 23:38:32,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,920 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,921 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:38:32,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:38:32,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:38:32,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:38:32,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (1/1) ... [2024-11-27 23:38:32,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:38:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:32,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:38:33,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:38:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2024-11-27 23:38:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2024-11-27 23:38:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:38:33,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:38:33,099 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:38:33,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:38:33,278 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-27 23:38:33,278 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:38:33,298 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:38:33,299 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:38:33,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33 BoogieIcfgContainer [2024-11-27 23:38:33,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:38:33,302 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:38:33,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:38:33,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:38:33,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:38:32" (1/3) ... [2024-11-27 23:38:33,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37595e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:32" (2/3) ... [2024-11-27 23:38:33,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37595e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:38:33, skipping insertion in model container [2024-11-27 23:38:33,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:33" (3/3) ... [2024-11-27 23:38:33,315 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2024-11-27 23:38:33,337 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:38:33,340 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_counter3.c that has 2 procedures, 29 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2024-11-27 23:38:33,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:38:33,438 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;@a9f6250, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:38:33,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-27 23:38:33,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:38:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 23:38:33,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:33,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:33,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:33,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2006379659, now seen corresponding path program 1 times [2024-11-27 23:38:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740790878] [2024-11-27 23:38:33,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740790878] [2024-11-27 23:38:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740790878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:33,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:33,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:38:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777767025] [2024-11-27 23:38:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:33,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:38:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:33,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:38:33,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:33,817 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 25 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2024-11-27 23:38:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:33,962 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-11-27 23:38:33,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:38:33,964 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 [2024-11-27 23:38:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:33,971 INFO L225 Difference]: With dead ends: 68 [2024-11-27 23:38:33,971 INFO L226 Difference]: Without dead ends: 41 [2024-11-27 23:38:33,974 INFO L434 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 [2024-11-27 23:38:33,977 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:33,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 104 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-27 23:38:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-27 23:38:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.5) internal successors, (39), 31 states have internal predecessors, (39), 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) [2024-11-27 23:38:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-27 23:38:34,019 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 7 [2024-11-27 23:38:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:34,020 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-27 23:38:34,020 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) [2024-11-27 23:38:34,020 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-27 23:38:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-27 23:38:34,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,021 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:38:34,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:34,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2068227323, now seen corresponding path program 1 times [2024-11-27 23:38:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155678024] [2024-11-27 23:38:34,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155678024] [2024-11-27 23:38:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155678024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:34,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:34,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:38:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631979870] [2024-11-27 23:38:34,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:34,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:38:34,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:34,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:38:34,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:34,113 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (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) [2024-11-27 23:38:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:34,166 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-11-27 23:38:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:38:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (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 [2024-11-27 23:38:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:34,169 INFO L225 Difference]: With dead ends: 38 [2024-11-27 23:38:34,169 INFO L226 Difference]: Without dead ends: 37 [2024-11-27 23:38:34,169 INFO L434 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 [2024-11-27 23:38:34,170 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:34,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-27 23:38:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-27 23:38:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 30 states have internal predecessors, (37), 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) [2024-11-27 23:38:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-27 23:38:34,186 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 8 [2024-11-27 23:38:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:34,187 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-27 23:38:34,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (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) [2024-11-27 23:38:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-27 23:38:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-27 23:38:34,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,187 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:38:34,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:34,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2102243492, now seen corresponding path program 1 times [2024-11-27 23:38:34,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519724229] [2024-11-27 23:38:34,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519724229] [2024-11-27 23:38:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519724229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651397223] [2024-11-27 23:38:34,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:34,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:34,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:38:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:38:34,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:38:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651397223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:34,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-27 23:38:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685762398] [2024-11-27 23:38:34,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:34,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:38:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:34,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:38:34,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:38:34,523 INFO L87 Difference]: Start difference. First operand 35 states and 42 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) [2024-11-27 23:38:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:34,649 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-27 23:38:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:38:34,650 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 [2024-11-27 23:38:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:34,650 INFO L225 Difference]: With dead ends: 41 [2024-11-27 23:38:34,651 INFO L226 Difference]: Without dead ends: 40 [2024-11-27 23:38:34,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-27 23:38:34,652 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 120 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:34,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 84 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-27 23:38:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-27 23:38:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 29 states have internal predecessors, (36), 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) [2024-11-27 23:38:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-27 23:38:34,662 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 12 [2024-11-27 23:38:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:34,663 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-27 23:38:34,663 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) [2024-11-27 23:38:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-27 23:38:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 23:38:34,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:34,665 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:34,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:34,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:34,870 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:34,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -941693446, now seen corresponding path program 1 times [2024-11-27 23:38:34,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:34,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874823565] [2024-11-27 23:38:34,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:34,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:38:34,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874823565] [2024-11-27 23:38:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874823565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:38:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391208081] [2024-11-27 23:38:34,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:34,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:38:34,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:34,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:34,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:34,976 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-27 23:38:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,003 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-11-27 23:38:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 16 [2024-11-27 23:38:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,005 INFO L225 Difference]: With dead ends: 34 [2024-11-27 23:38:35,005 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 23:38:35,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:35,007 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 23:38:35,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-27 23:38:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 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) [2024-11-27 23:38:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-27 23:38:35,046 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2024-11-27 23:38:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,047 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-27 23:38:35,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-27 23:38:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-27 23:38:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:38:35,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,048 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:38:35,048 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:35,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash 872272097, now seen corresponding path program 1 times [2024-11-27 23:38:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808390779] [2024-11-27 23:38:35,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:38:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808390779] [2024-11-27 23:38:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808390779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958055429] [2024-11-27 23:38:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:35,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:35,125 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 23:38:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,150 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-27 23:38:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-11-27 23:38:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,153 INFO L225 Difference]: With dead ends: 33 [2024-11-27 23:38:35,153 INFO L226 Difference]: Without dead ends: 32 [2024-11-27 23:38:35,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:35,154 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-27 23:38:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-27 23:38:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 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) [2024-11-27 23:38:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-27 23:38:35,166 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 17 [2024-11-27 23:38:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,166 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-27 23:38:35,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 23:38:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-27 23:38:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:38:35,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,167 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:38:35,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:35,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash 872274307, now seen corresponding path program 1 times [2024-11-27 23:38:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706739741] [2024-11-27 23:38:35,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:38:35,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706739741] [2024-11-27 23:38:35,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706739741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:35,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:38:35,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831812733] [2024-11-27 23:38:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:38:35,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:38:35,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:35,249 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 23:38:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,283 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-27 23:38:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:38:35,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-11-27 23:38:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,287 INFO L225 Difference]: With dead ends: 41 [2024-11-27 23:38:35,287 INFO L226 Difference]: Without dead ends: 38 [2024-11-27 23:38:35,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:38:35,288 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-27 23:38:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-27 23:38:35,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 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) [2024-11-27 23:38:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-27 23:38:35,296 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2024-11-27 23:38:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,296 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-27 23:38:35,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2024-11-27 23:38:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-27 23:38:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-27 23:38:35,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,300 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:38:35,300 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:35,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1270631285, now seen corresponding path program 1 times [2024-11-27 23:38:35,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774351820] [2024-11-27 23:38:35,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:38:35,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774351820] [2024-11-27 23:38:35,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774351820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:38:35,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:38:35,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970018100] [2024-11-27 23:38:35,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:38:35,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:38:35,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:35,398 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:38:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,422 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-27 23:38:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:38:35,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-27 23:38:35,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,423 INFO L225 Difference]: With dead ends: 64 [2024-11-27 23:38:35,423 INFO L226 Difference]: Without dead ends: 40 [2024-11-27 23:38:35,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:38:35,424 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-27 23:38:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-27 23:38:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:38:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-27 23:38:35,432 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2024-11-27 23:38:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,432 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-27 23:38:35,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:38:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-27 23:38:35,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-27 23:38:35,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,433 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:38:35,433 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:35,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1967453688, now seen corresponding path program 1 times [2024-11-27 23:38:35,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535239127] [2024-11-27 23:38:35,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:38:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535239127] [2024-11-27 23:38:35,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535239127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015472430] [2024-11-27 23:38:35,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:35,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:35,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:38:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:35,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:38:35,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:38:35,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:38:35,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015472430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:38:35,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:38:35,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-27 23:38:35,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553639348] [2024-11-27 23:38:35,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:38:35,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:38:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:35,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:38:35,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:38:35,702 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-27 23:38:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:35,730 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-27 23:38:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:38:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 29 [2024-11-27 23:38:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:35,731 INFO L225 Difference]: With dead ends: 40 [2024-11-27 23:38:35,732 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 23:38:35,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:38:35,733 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:35,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:38:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 23:38:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-27 23:38:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:38:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-27 23:38:35,740 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2024-11-27 23:38:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:35,740 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-27 23:38:35,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-27 23:38:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-27 23:38:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-27 23:38:35,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:35,741 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:35,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:38:35,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:35,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:35,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1005821286, now seen corresponding path program 1 times [2024-11-27 23:38:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057959704] [2024-11-27 23:38:35,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:38:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057959704] [2024-11-27 23:38:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057959704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609444962] [2024-11-27 23:38:36,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:36,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:36,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:36,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:38:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:36,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:38:36,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:38:36,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:38:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609444962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:36,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-11-27 23:38:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072243440] [2024-11-27 23:38:36,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:36,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:38:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:36,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:38:36,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:38:36,484 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 17 states, 16 states have (on average 3.0625) internal successors, (49), 13 states have internal predecessors, (49), 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) [2024-11-27 23:38:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:36,855 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2024-11-27 23:38:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 23:38:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 13 states have internal predecessors, (49), 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 32 [2024-11-27 23:38:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:36,859 INFO L225 Difference]: With dead ends: 132 [2024-11-27 23:38:36,859 INFO L226 Difference]: Without dead ends: 93 [2024-11-27 23:38:36,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:38:36,863 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:36,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 139 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-27 23:38:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-27 23:38:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 23:38:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2024-11-27 23:38:36,901 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 32 [2024-11-27 23:38:36,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:36,902 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2024-11-27 23:38:36,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0625) internal successors, (49), 13 states have internal predecessors, (49), 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) [2024-11-27 23:38:36,902 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2024-11-27 23:38:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:38:36,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:36,907 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:36,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:38:37,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:37,108 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:37,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 121147721, now seen corresponding path program 2 times [2024-11-27 23:38:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:37,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566462341] [2024-11-27 23:38:37,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:37,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:37,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:37,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 137 proven. 27 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:38:37,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:37,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566462341] [2024-11-27 23:38:37,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566462341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:37,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056855004] [2024-11-27 23:38:37,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:38:37,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:37,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:37,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:38:37,950 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:38:37,950 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:37,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 23:38:37,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 122 proven. 42 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:38:38,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 122 proven. 42 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-27 23:38:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056855004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:39,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:39,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-11-27 23:38:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575992074] [2024-11-27 23:38:39,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:39,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 23:38:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:39,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 23:38:39,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-27 23:38:39,478 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 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) [2024-11-27 23:38:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:39,784 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2024-11-27 23:38:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:38:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 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 99 [2024-11-27 23:38:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:39,788 INFO L225 Difference]: With dead ends: 164 [2024-11-27 23:38:39,789 INFO L226 Difference]: Without dead ends: 97 [2024-11-27 23:38:39,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 180 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:38:39,793 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:39,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 240 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-27 23:38:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-27 23:38:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.0795454545454546) internal successors, (95), 88 states have internal predecessors, (95), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 23:38:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2024-11-27 23:38:39,829 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 99 [2024-11-27 23:38:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:39,831 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2024-11-27 23:38:39,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 16 states have internal predecessors, (57), 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) [2024-11-27 23:38:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2024-11-27 23:38:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 23:38:39,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:39,835 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:39,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:40,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:38:40,044 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:40,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash -260535875, now seen corresponding path program 3 times [2024-11-27 23:38:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:40,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018055049] [2024-11-27 23:38:40,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:40,085 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:38:40,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-27 23:38:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018055049] [2024-11-27 23:38:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018055049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:40,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211280613] [2024-11-27 23:38:40,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:38:40,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:40,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:40,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:40,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:38:40,393 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 23:38:40,393 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:40,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:38:40,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-27 23:38:40,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-27 23:38:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211280613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:40,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-27 23:38:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531043211] [2024-11-27 23:38:40,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:40,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:38:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:40,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:38:40,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:38:40,824 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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) [2024-11-27 23:38:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:40,960 INFO L93 Difference]: Finished difference Result 210 states and 241 transitions. [2024-11-27 23:38:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:38:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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 107 [2024-11-27 23:38:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:40,964 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:38:40,966 INFO L226 Difference]: Without dead ends: 205 [2024-11-27 23:38:40,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:38:40,968 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:40,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 63 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:38:40,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-27 23:38:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2024-11-27 23:38:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 120 states have internal predecessors, (131), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 23:38:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2024-11-27 23:38:40,996 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 107 [2024-11-27 23:38:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:40,996 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2024-11-27 23:38:40,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 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) [2024-11-27 23:38:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2024-11-27 23:38:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-27 23:38:40,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:40,999 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:41,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:41,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 23:38:41,203 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:41,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1619230203, now seen corresponding path program 4 times [2024-11-27 23:38:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215487538] [2024-11-27 23:38:41,204 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:38:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:41,236 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:38:41,236 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 186 proven. 112 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-27 23:38:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215487538] [2024-11-27 23:38:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215487538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934809806] [2024-11-27 23:38:41,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:38:41,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:41,645 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:41,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:38:41,729 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:38:41,729 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:41,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:38:41,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:42,052 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 23:38:42,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-27 23:38:43,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934809806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:43,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:43,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 38 [2024-11-27 23:38:43,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86596002] [2024-11-27 23:38:43,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:43,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-27 23:38:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:43,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-27 23:38:43,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:38:43,597 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 29 states have internal predecessors, (115), 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) [2024-11-27 23:38:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:45,220 INFO L93 Difference]: Finished difference Result 540 states and 598 transitions. [2024-11-27 23:38:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-27 23:38:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 29 states have internal predecessors, (115), 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 113 [2024-11-27 23:38:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:45,227 INFO L225 Difference]: With dead ends: 540 [2024-11-27 23:38:45,228 INFO L226 Difference]: Without dead ends: 347 [2024-11-27 23:38:45,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1360, Invalid=7952, Unknown=0, NotChecked=0, Total=9312 [2024-11-27 23:38:45,236 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:45,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 219 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-27 23:38:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 261. [2024-11-27 23:38:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 246 states have (on average 1.0934959349593496) internal successors, (269), 246 states have internal predecessors, (269), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 23:38:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 284 transitions. [2024-11-27 23:38:45,283 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 284 transitions. Word has length 113 [2024-11-27 23:38:45,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:45,283 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 284 transitions. [2024-11-27 23:38:45,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.026315789473684) internal successors, (115), 29 states have internal predecessors, (115), 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) [2024-11-27 23:38:45,284 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 284 transitions. [2024-11-27 23:38:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-27 23:38:45,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:45,291 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:45,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:38:45,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:38:45,496 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:45,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash -488372979, now seen corresponding path program 5 times [2024-11-27 23:38:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817139468] [2024-11-27 23:38:45,499 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:38:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:45,559 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-27 23:38:45,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1923 proven. 205 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2024-11-27 23:38:46,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:46,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817139468] [2024-11-27 23:38:46,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817139468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537321498] [2024-11-27 23:38:46,261 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:38:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:46,263 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:46,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:38:46,413 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-27 23:38:46,413 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:46,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 23:38:46,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1907 proven. 240 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2024-11-27 23:38:46,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1951 proven. 196 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2024-11-27 23:38:48,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537321498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:48,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:48,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 28 [2024-11-27 23:38:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972055126] [2024-11-27 23:38:48,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:48,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:38:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:48,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:38:48,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:38:48,996 INFO L87 Difference]: Start difference. First operand 261 states and 284 transitions. Second operand has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 25 states have internal predecessors, (87), 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) [2024-11-27 23:38:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:49,772 INFO L93 Difference]: Finished difference Result 610 states and 670 transitions. [2024-11-27 23:38:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 23:38:49,773 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 25 states have internal predecessors, (87), 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 285 [2024-11-27 23:38:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:49,776 INFO L225 Difference]: With dead ends: 610 [2024-11-27 23:38:49,777 INFO L226 Difference]: Without dead ends: 391 [2024-11-27 23:38:49,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 546 SyntacticMatches, 18 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=454, Invalid=2302, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 23:38:49,781 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:49,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 306 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:38:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-27 23:38:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 369. [2024-11-27 23:38:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 349 states have (on average 1.0573065902578798) internal successors, (369), 349 states have internal predecessors, (369), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:38:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 389 transitions. [2024-11-27 23:38:49,824 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 389 transitions. Word has length 285 [2024-11-27 23:38:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:49,825 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 389 transitions. [2024-11-27 23:38:49,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.107142857142857) internal successors, (87), 25 states have internal predecessors, (87), 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) [2024-11-27 23:38:49,826 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 389 transitions. [2024-11-27 23:38:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-11-27 23:38:49,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:49,832 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:49,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:38:50,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 23:38:50,036 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:50,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1729332145, now seen corresponding path program 6 times [2024-11-27 23:38:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744415105] [2024-11-27 23:38:50,037 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:38:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:50,120 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:38:50,121 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4533 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2641 trivial. 0 not checked. [2024-11-27 23:38:50,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744415105] [2024-11-27 23:38:50,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744415105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:50,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152728695] [2024-11-27 23:38:50,813 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:38:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:50,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:50,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:50,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:38:51,010 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 23:38:51,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:38:51,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:38:51,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:51,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4533 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2641 trivial. 0 not checked. [2024-11-27 23:38:51,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4533 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2641 trivial. 0 not checked. [2024-11-27 23:38:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152728695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:52,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-27 23:38:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137418320] [2024-11-27 23:38:52,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:52,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:38:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:38:52,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:38:52,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:38:52,134 INFO L87 Difference]: Start difference. First operand 369 states and 389 transitions. Second operand has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 30 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:38:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:53,032 INFO L93 Difference]: Finished difference Result 1504 states and 1680 transitions. [2024-11-27 23:38:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-27 23:38:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 30 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 295 [2024-11-27 23:38:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:38:53,040 INFO L225 Difference]: With dead ends: 1504 [2024-11-27 23:38:53,040 INFO L226 Difference]: Without dead ends: 1421 [2024-11-27 23:38:53,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 23:38:53,047 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:38:53,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:38:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2024-11-27 23:38:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 429. [2024-11-27 23:38:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 409 states have (on average 1.075794621026895) internal successors, (440), 409 states have internal predecessors, (440), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 23:38:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 460 transitions. [2024-11-27 23:38:53,126 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 460 transitions. Word has length 295 [2024-11-27 23:38:53,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:38:53,126 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 460 transitions. [2024-11-27 23:38:53,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 30 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:38:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 460 transitions. [2024-11-27 23:38:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-27 23:38:53,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:38:53,134 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:38:53,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:38:53,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 23:38:53,338 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:38:53,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1818826099, now seen corresponding path program 7 times [2024-11-27 23:38:53,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:38:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083275284] [2024-11-27 23:38:53,340 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:38:53,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6722 backedges. 4009 proven. 178 refuted. 0 times theorem prover too weak. 2535 trivial. 0 not checked. [2024-11-27 23:38:54,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:38:54,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083275284] [2024-11-27 23:38:54,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083275284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:54,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343114730] [2024-11-27 23:38:54,670 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:38:54,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:54,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:54,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:38:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:54,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-27 23:38:54,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6722 backedges. 3646 proven. 396 refuted. 0 times theorem prover too weak. 2680 trivial. 0 not checked. [2024-11-27 23:38:55,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6722 backedges. 3646 proven. 396 refuted. 0 times theorem prover too weak. 2680 trivial. 0 not checked. [2024-11-27 23:39:02,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343114730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:02,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:02,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2024-11-27 23:39:02,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598355944] [2024-11-27 23:39:02,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:02,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-27 23:39:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:02,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-27 23:39:02,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 23:39:02,096 INFO L87 Difference]: Start difference. First operand 429 states and 460 transitions. Second operand has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 37 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 23:39:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:03,754 INFO L93 Difference]: Finished difference Result 1015 states and 1087 transitions. [2024-11-27 23:39:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-27 23:39:03,754 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 37 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 339 [2024-11-27 23:39:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:03,761 INFO L225 Difference]: With dead ends: 1015 [2024-11-27 23:39:03,761 INFO L226 Difference]: Without dead ends: 704 [2024-11-27 23:39:03,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 628 SyntacticMatches, 31 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=823, Invalid=6659, Unknown=0, NotChecked=0, Total=7482 [2024-11-27 23:39:03,767 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:03,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 533 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 23:39:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-27 23:39:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 541. [2024-11-27 23:39:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 516 states have (on average 1.063953488372093) internal successors, (549), 516 states have internal predecessors, (549), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-27 23:39:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 574 transitions. [2024-11-27 23:39:03,866 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 574 transitions. Word has length 339 [2024-11-27 23:39:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:03,867 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 574 transitions. [2024-11-27 23:39:03,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 37 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 23:39:03,867 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 574 transitions. [2024-11-27 23:39:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-27 23:39:03,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:03,877 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 55, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:03,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:39:04,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 23:39:04,078 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:39:04,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1937526177, now seen corresponding path program 8 times [2024-11-27 23:39:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391139078] [2024-11-27 23:39:04,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:39:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:04,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:39:04,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 4518 proven. 245 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2024-11-27 23:39:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391139078] [2024-11-27 23:39:05,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391139078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:05,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934663122] [2024-11-27 23:39:05,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:39:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:05,526 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:05,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:39:05,786 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:39:05,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:05,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 23:39:05,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 4454 proven. 640 refuted. 0 times theorem prover too weak. 2197 trivial. 0 not checked. [2024-11-27 23:39:06,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 4454 proven. 640 refuted. 0 times theorem prover too weak. 2197 trivial. 0 not checked. [2024-11-27 23:39:13,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934663122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:13,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2024-11-27 23:39:13,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710268670] [2024-11-27 23:39:13,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:13,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 23:39:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:13,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 23:39:13,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2289, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 23:39:13,734 INFO L87 Difference]: Start difference. First operand 541 states and 574 transitions. Second operand has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 43 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-27 23:39:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:15,955 INFO L93 Difference]: Finished difference Result 1118 states and 1183 transitions. [2024-11-27 23:39:15,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-27 23:39:15,955 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 43 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 357 [2024-11-27 23:39:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:15,960 INFO L225 Difference]: With dead ends: 1118 [2024-11-27 23:39:15,960 INFO L226 Difference]: Without dead ends: 787 [2024-11-27 23:39:15,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 656 SyntacticMatches, 36 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5227 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1325, Invalid=10447, Unknown=0, NotChecked=0, Total=11772 [2024-11-27 23:39:15,965 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:15,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 485 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:39:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-27 23:39:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 682. [2024-11-27 23:39:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 652 states have (on average 1.0552147239263803) internal successors, (688), 652 states have internal predecessors, (688), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 23:39:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 718 transitions. [2024-11-27 23:39:16,092 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 718 transitions. Word has length 357 [2024-11-27 23:39:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:16,093 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 718 transitions. [2024-11-27 23:39:16,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.764705882352941) internal successors, (141), 43 states have internal predecessors, (141), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-27 23:39:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 718 transitions. [2024-11-27 23:39:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-27 23:39:16,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:16,103 INFO L218 NwaCegarLoop]: trace histogram [57, 57, 57, 57, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:16,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 23:39:16,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 23:39:16,308 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:39:16,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash 507768949, now seen corresponding path program 9 times [2024-11-27 23:39:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:16,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332398669] [2024-11-27 23:39:16,309 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:16,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:16,383 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:39:16,383 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-27 23:39:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332398669] [2024-11-27 23:39:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332398669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579373262] [2024-11-27 23:39:17,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:39:17,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:17,250 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:17,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:39:17,604 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 23:39:17,604 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:17,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 23:39:17,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-27 23:39:17,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-27 23:39:19,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579373262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:19,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-27 23:39:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181506149] [2024-11-27 23:39:19,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:19,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:39:19,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:19,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:39:19,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:39:19,500 INFO L87 Difference]: Start difference. First operand 682 states and 718 transitions. Second operand has 46 states, 45 states have (on average 2.6) internal successors, (117), 42 states have internal predecessors, (117), 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) [2024-11-27 23:39:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:22,180 INFO L93 Difference]: Finished difference Result 2779 states and 3058 transitions. [2024-11-27 23:39:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-27 23:39:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6) internal successors, (117), 42 states have internal predecessors, (117), 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 355 [2024-11-27 23:39:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:22,192 INFO L225 Difference]: With dead ends: 2779 [2024-11-27 23:39:22,192 INFO L226 Difference]: Without dead ends: 2600 [2024-11-27 23:39:22,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5934 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3816, Invalid=14006, Unknown=0, NotChecked=0, Total=17822 [2024-11-27 23:39:22,200 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:22,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 181 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:39:22,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2024-11-27 23:39:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 795. [2024-11-27 23:39:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 765 states have (on average 1.0718954248366013) internal successors, (820), 765 states have internal predecessors, (820), 3 states have call successors, (3), 2 states have call predecessors, (3), 26 states have return successors, (27), 27 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 23:39:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 850 transitions. [2024-11-27 23:39:22,372 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 850 transitions. Word has length 355 [2024-11-27 23:39:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:22,373 INFO L471 AbstractCegarLoop]: Abstraction has 795 states and 850 transitions. [2024-11-27 23:39:22,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6) internal successors, (117), 42 states have internal predecessors, (117), 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) [2024-11-27 23:39:22,373 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 850 transitions. [2024-11-27 23:39:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-11-27 23:39:22,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:22,377 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 76, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:22,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-27 23:39:22,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 23:39:22,578 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:39:22,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 265945859, now seen corresponding path program 10 times [2024-11-27 23:39:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128188002] [2024-11-27 23:39:22,579 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:39:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:22,675 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:39:22,675 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12863 backedges. 5880 proven. 177 refuted. 0 times theorem prover too weak. 6806 trivial. 0 not checked. [2024-11-27 23:39:23,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:23,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128188002] [2024-11-27 23:39:23,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128188002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:23,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961885375] [2024-11-27 23:39:23,988 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:39:23,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:23,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:23,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:39:24,360 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:39:24,361 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:24,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 23:39:24,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12863 backedges. 5327 proven. 940 refuted. 0 times theorem prover too weak. 6596 trivial. 0 not checked. [2024-11-27 23:39:25,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12863 backedges. 5327 proven. 940 refuted. 0 times theorem prover too weak. 6596 trivial. 0 not checked. [2024-11-27 23:39:30,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961885375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:30,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 35, 35] total 46 [2024-11-27 23:39:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100042857] [2024-11-27 23:39:30,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:30,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:39:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:30,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:39:30,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:39:30,425 INFO L87 Difference]: Start difference. First operand 795 states and 850 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 39 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 23:39:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:31,378 INFO L93 Difference]: Finished difference Result 1136 states and 1224 transitions. [2024-11-27 23:39:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-27 23:39:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 39 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 431 [2024-11-27 23:39:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:31,381 INFO L225 Difference]: With dead ends: 1136 [2024-11-27 23:39:31,381 INFO L226 Difference]: Without dead ends: 479 [2024-11-27 23:39:31,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 813 SyntacticMatches, 32 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3891 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1068, Invalid=7488, Unknown=0, NotChecked=0, Total=8556 [2024-11-27 23:39:31,386 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:31,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 203 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:39:31,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-27 23:39:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-27 23:39:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.0734341252699784) internal successors, (497), 463 states have internal predecessors, (497), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 13 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 23:39:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 513 transitions. [2024-11-27 23:39:31,461 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 513 transitions. Word has length 431 [2024-11-27 23:39:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:31,462 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 513 transitions. [2024-11-27 23:39:31,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 39 states have internal predecessors, (127), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-27 23:39:31,463 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 513 transitions. [2024-11-27 23:39:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-27 23:39:31,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:31,467 INFO L218 NwaCegarLoop]: trace histogram [82, 82, 82, 82, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:31,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 23:39:31,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 23:39:31,671 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:39:31,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1975728708, now seen corresponding path program 11 times [2024-11-27 23:39:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174372684] [2024-11-27 23:39:31,672 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:39:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:31,751 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:39:31,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7606 proven. 831 refuted. 0 times theorem prover too weak. 6581 trivial. 0 not checked. [2024-11-27 23:39:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174372684] [2024-11-27 23:39:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174372684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530694212] [2024-11-27 23:39:33,126 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:39:33,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:33,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:33,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:33,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 23:39:33,692 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-27 23:39:33,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:33,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:39:33,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7126 proven. 1386 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2024-11-27 23:39:34,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7126 proven. 1386 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2024-11-27 23:39:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530694212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:39,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:39,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 37] total 46 [2024-11-27 23:39:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777917997] [2024-11-27 23:39:39,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:39,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:39:39,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:39,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:39:39,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:39:39,716 INFO L87 Difference]: Start difference. First operand 479 states and 513 transitions. Second operand has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 41 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:39:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:39:41,223 INFO L93 Difference]: Finished difference Result 854 states and 922 transitions. [2024-11-27 23:39:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-27 23:39:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 41 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 466 [2024-11-27 23:39:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:39:41,226 INFO L225 Difference]: With dead ends: 854 [2024-11-27 23:39:41,226 INFO L226 Difference]: Without dead ends: 513 [2024-11-27 23:39:41,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 892 SyntacticMatches, 29 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4280 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1268, Invalid=10074, Unknown=0, NotChecked=0, Total=11342 [2024-11-27 23:39:41,231 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:39:41,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 299 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:39:41,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-27 23:39:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2024-11-27 23:39:41,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 496 states have (on average 1.0685483870967742) internal successors, (530), 496 states have internal predecessors, (530), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 23:39:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 547 transitions. [2024-11-27 23:39:41,314 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 547 transitions. Word has length 466 [2024-11-27 23:39:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:39:41,315 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 547 transitions. [2024-11-27 23:39:41,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 41 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:39:41,315 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 547 transitions. [2024-11-27 23:39:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-27 23:39:41,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:39:41,321 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 89, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2024-11-27 23:39:41,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 23:39:41,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:41,525 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:39:41,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 43228253, now seen corresponding path program 12 times [2024-11-27 23:39:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952641778] [2024-11-27 23:39:41,526 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:39:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:41,632 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-27 23:39:41,632 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17705 backedges. 4730 proven. 435 refuted. 0 times theorem prover too weak. 12540 trivial. 0 not checked. [2024-11-27 23:39:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952641778] [2024-11-27 23:39:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952641778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:39:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385882876] [2024-11-27 23:39:43,339 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:39:43,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:39:43,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:39:43,341 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:39:43,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 23:39:43,875 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-27 23:39:43,875 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:43,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:39:43,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:39:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17705 backedges. 695 proven. 14790 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-27 23:39:45,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:39:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 17705 backedges. 695 proven. 14790 refuted. 0 times theorem prover too weak. 2220 trivial. 0 not checked. [2024-11-27 23:39:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385882876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:39:59,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:39:59,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 37, 37] total 100 [2024-11-27 23:39:59,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654876679] [2024-11-27 23:39:59,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:39:59,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-27 23:39:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:59,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-27 23:39:59,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1204, Invalid=8896, Unknown=0, NotChecked=0, Total=10100 [2024-11-27 23:39:59,358 INFO L87 Difference]: Start difference. First operand 513 states and 547 transitions. Second operand has 101 states, 100 states have (on average 2.76) internal successors, (276), 81 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-27 23:40:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:40:37,114 INFO L93 Difference]: Finished difference Result 2932 states and 3259 transitions. [2024-11-27 23:40:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 610 states. [2024-11-27 23:40:37,115 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.76) internal successors, (276), 81 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) Word has length 505 [2024-11-27 23:40:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:40:37,122 INFO L225 Difference]: With dead ends: 2932 [2024-11-27 23:40:37,123 INFO L226 Difference]: Without dead ends: 2039 [2024-11-27 23:40:37,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1551 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 609 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156319 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=60294, Invalid=312416, Unknown=0, NotChecked=0, Total=372710 [2024-11-27 23:40:37,161 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:40:37,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 212 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:40:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2024-11-27 23:40:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1339. [2024-11-27 23:40:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1311 states have (on average 1.118230358504958) internal successors, (1466), 1311 states have internal predecessors, (1466), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 23:40:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1494 transitions. [2024-11-27 23:40:37,348 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1494 transitions. Word has length 505 [2024-11-27 23:40:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:40:37,349 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 1494 transitions. [2024-11-27 23:40:37,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 2.76) internal successors, (276), 81 states have internal predecessors, (276), 1 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (21), 21 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-27 23:40:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1494 transitions. [2024-11-27 23:40:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1385 [2024-11-27 23:40:37,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:40:37,370 INFO L218 NwaCegarLoop]: trace histogram [276, 276, 276, 276, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-27 23:40:37,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 23:40:37,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:37,571 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:40:37,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1865156736, now seen corresponding path program 13 times [2024-11-27 23:40:37,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293774607] [2024-11-27 23:40:37,572 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 71962 proven. 16704 refuted. 0 times theorem prover too weak. 73091 trivial. 0 not checked. [2024-11-27 23:40:48,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293774607] [2024-11-27 23:40:48,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293774607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:48,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535149307] [2024-11-27 23:40:48,450 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:48,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:48,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:48,452 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:48,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 23:40:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:49,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-27 23:40:49,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 72011 proven. 16627 refuted. 0 times theorem prover too weak. 73119 trivial. 0 not checked. [2024-11-27 23:40:50,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 72011 proven. 16627 refuted. 0 times theorem prover too weak. 73119 trivial. 0 not checked. [2024-11-27 23:42:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535149307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:42:01,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:42:01,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 70, 70] total 74 [2024-11-27 23:42:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062860983] [2024-11-27 23:42:01,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-27 23:42:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:01,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-27 23:42:01,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=4799, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 23:42:01,005 INFO L87 Difference]: Start difference. First operand 1339 states and 1494 transitions. Second operand has 74 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 60 states have internal predecessors, (197), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-27 23:42:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:07,070 INFO L93 Difference]: Finished difference Result 3584 states and 4005 transitions. [2024-11-27 23:42:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2024-11-27 23:42:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 60 states have internal predecessors, (197), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1384 [2024-11-27 23:42:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:07,083 INFO L225 Difference]: With dead ends: 3584 [2024-11-27 23:42:07,084 INFO L226 Difference]: Without dead ends: 2417 [2024-11-27 23:42:07,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3005 GetRequests, 2699 SyntacticMatches, 67 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23582 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=8124, Invalid=49716, Unknown=0, NotChecked=0, Total=57840 [2024-11-27 23:42:07,097 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:07,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:42:07,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2024-11-27 23:42:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2167. [2024-11-27 23:42:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2123 states have (on average 1.106453132359868) internal successors, (2349), 2123 states have internal predecessors, (2349), 3 states have call successors, (3), 2 states have call predecessors, (3), 40 states have return successors, (41), 41 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-27 23:42:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2393 transitions. [2024-11-27 23:42:07,622 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2393 transitions. Word has length 1384 [2024-11-27 23:42:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:07,623 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 2393 transitions. [2024-11-27 23:42:07,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.6621621621621623) internal successors, (197), 60 states have internal predecessors, (197), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-27 23:42:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2393 transitions. [2024-11-27 23:42:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2024-11-27 23:42:07,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:07,649 INFO L218 NwaCegarLoop]: trace histogram [283, 283, 283, 283, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:07,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-27 23:42:07,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:07,850 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:42:07,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:07,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1637147713, now seen corresponding path program 14 times [2024-11-27 23:42:07,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:07,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973672604] [2024-11-27 23:42:07,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:42:07,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:08,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:42:08,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 170037 backedges. 40117 proven. 893 refuted. 0 times theorem prover too weak. 129027 trivial. 0 not checked. [2024-11-27 23:42:14,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973672604] [2024-11-27 23:42:14,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973672604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701414620] [2024-11-27 23:42:14,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:42:14,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:14,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:14,552 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:14,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 23:42:16,141 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:42:16,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:16,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 23:42:16,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 170037 backedges. 40036 proven. 967 refuted. 0 times theorem prover too weak. 129034 trivial. 0 not checked. [2024-11-27 23:42:16,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 170037 backedges. 40036 proven. 967 refuted. 0 times theorem prover too weak. 129034 trivial. 0 not checked. [2024-11-27 23:42:46,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701414620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:42:46,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:42:46,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 46 [2024-11-27 23:42:46,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516599682] [2024-11-27 23:42:46,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:46,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-27 23:42:46,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:46,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-27 23:42:46,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 23:42:46,490 INFO L87 Difference]: Start difference. First operand 2167 states and 2393 transitions. Second operand has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 37 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-27 23:42:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:48,053 INFO L93 Difference]: Finished difference Result 3878 states and 4308 transitions. [2024-11-27 23:42:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-27 23:42:48,057 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 37 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 1413 [2024-11-27 23:42:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:48,065 INFO L225 Difference]: With dead ends: 3878 [2024-11-27 23:42:48,065 INFO L226 Difference]: Without dead ends: 1921 [2024-11-27 23:42:48,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2783 SyntacticMatches, 41 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3954 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1371, Invalid=7559, Unknown=0, NotChecked=0, Total=8930 [2024-11-27 23:42:48,072 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:48,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 726 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:42:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2024-11-27 23:42:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1921. [2024-11-27 23:42:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1882 states have (on average 1.0951115834218916) internal successors, (2061), 1882 states have internal predecessors, (2061), 3 states have call successors, (3), 2 states have call predecessors, (3), 35 states have return successors, (36), 36 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-27 23:42:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2100 transitions. [2024-11-27 23:42:48,548 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2100 transitions. Word has length 1413 [2024-11-27 23:42:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:48,550 INFO L471 AbstractCegarLoop]: Abstraction has 1921 states and 2100 transitions. [2024-11-27 23:42:48,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.717391304347826) internal successors, (125), 37 states have internal predecessors, (125), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-27 23:42:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2100 transitions. [2024-11-27 23:42:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1428 [2024-11-27 23:42:48,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:48,571 INFO L218 NwaCegarLoop]: trace histogram [284, 284, 284, 284, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:48,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 23:42:48,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:48,772 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:42:48,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 436855643, now seen corresponding path program 15 times [2024-11-27 23:42:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:48,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624057785] [2024-11-27 23:42:48,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:42:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:48,939 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-27 23:42:48,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 171453 backedges. 19922 proven. 630 refuted. 0 times theorem prover too weak. 150901 trivial. 0 not checked. [2024-11-27 23:42:50,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:42:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624057785] [2024-11-27 23:42:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624057785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:42:50,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733816277] [2024-11-27 23:42:50,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:42:50,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:42:50,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:42:50,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 23:42:52,697 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-11-27 23:42:52,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:42:52,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 23:42:52,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:42:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 171453 backedges. 19922 proven. 630 refuted. 0 times theorem prover too weak. 150901 trivial. 0 not checked. [2024-11-27 23:42:52,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:42:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 171453 backedges. 19922 proven. 630 refuted. 0 times theorem prover too weak. 150901 trivial. 0 not checked. [2024-11-27 23:42:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733816277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:42:55,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:42:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 77 [2024-11-27 23:42:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609438271] [2024-11-27 23:42:55,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:42:55,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-27 23:42:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:42:55,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-27 23:42:55,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1561, Invalid=4445, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:42:55,777 INFO L87 Difference]: Start difference. First operand 1921 states and 2100 transitions. Second operand has 78 states, 77 states have (on average 2.1948051948051948) internal successors, (169), 78 states have internal predecessors, (169), 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) [2024-11-27 23:42:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:42:56,472 INFO L93 Difference]: Finished difference Result 3322 states and 3836 transitions. [2024-11-27 23:42:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-27 23:42:56,473 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.1948051948051948) internal successors, (169), 78 states have internal predecessors, (169), 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 1427 [2024-11-27 23:42:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:42:56,486 INFO L225 Difference]: With dead ends: 3322 [2024-11-27 23:42:56,486 INFO L226 Difference]: Without dead ends: 3317 [2024-11-27 23:42:56,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2891 GetRequests, 2815 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1561, Invalid=4445, Unknown=0, NotChecked=0, Total=6006 [2024-11-27 23:42:56,490 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:42:56,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 112 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:42:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2024-11-27 23:42:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 2073. [2024-11-27 23:42:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2034 states have (on average 1.0973451327433628) internal successors, (2232), 2034 states have internal predecessors, (2232), 3 states have call successors, (3), 2 states have call predecessors, (3), 35 states have return successors, (36), 36 states have call predecessors, (36), 2 states have call successors, (36) [2024-11-27 23:42:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 2271 transitions. [2024-11-27 23:42:56,836 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 2271 transitions. Word has length 1427 [2024-11-27 23:42:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:42:56,837 INFO L471 AbstractCegarLoop]: Abstraction has 2073 states and 2271 transitions. [2024-11-27 23:42:56,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.1948051948051948) internal successors, (169), 78 states have internal predecessors, (169), 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) [2024-11-27 23:42:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 2271 transitions. [2024-11-27 23:42:56,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1494 [2024-11-27 23:42:56,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:42:56,859 INFO L218 NwaCegarLoop]: trace histogram [303, 303, 303, 303, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:42:56,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-27 23:42:57,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:42:57,060 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:42:57,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:42:57,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2137455561, now seen corresponding path program 16 times [2024-11-27 23:42:57,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:42:57,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719689472] [2024-11-27 23:42:57,061 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:42:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:42:57,530 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:42:57,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 193937 backedges. 56531 proven. 3352 refuted. 0 times theorem prover too weak. 134054 trivial. 0 not checked. [2024-11-27 23:43:02,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719689472] [2024-11-27 23:43:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719689472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:02,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900017245] [2024-11-27 23:43:02,185 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:43:02,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:02,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:43:02,187 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:43:02,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 23:43:04,102 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:43:04,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:04,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-27 23:43:04,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:43:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 193937 backedges. 99636 proven. 2032 refuted. 0 times theorem prover too weak. 92269 trivial. 0 not checked. [2024-11-27 23:43:08,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:43:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 193937 backedges. 99705 proven. 1963 refuted. 0 times theorem prover too weak. 92269 trivial. 0 not checked. [2024-11-27 23:43:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900017245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:43:18,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:43:18,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 77, 77] total 153 [2024-11-27 23:43:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054540048] [2024-11-27 23:43:18,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:43:18,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2024-11-27 23:43:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:18,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2024-11-27 23:43:18,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1889, Invalid=21367, Unknown=0, NotChecked=0, Total=23256 [2024-11-27 23:43:18,385 INFO L87 Difference]: Start difference. First operand 2073 states and 2271 transitions. Second operand has 153 states, 153 states have (on average 2.176470588235294) internal successors, (333), 151 states have internal predecessors, (333), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 23:43:29,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:29,019 INFO L93 Difference]: Finished difference Result 4275 states and 4777 transitions. [2024-11-27 23:43:29,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-11-27 23:43:29,020 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 153 states have (on average 2.176470588235294) internal successors, (333), 151 states have internal predecessors, (333), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1493 [2024-11-27 23:43:29,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:29,029 INFO L225 Difference]: With dead ends: 4275 [2024-11-27 23:43:29,029 INFO L226 Difference]: Without dead ends: 2994 [2024-11-27 23:43:29,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3164 GetRequests, 2835 SyntacticMatches, 40 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25582 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=9306, Invalid=75084, Unknown=0, NotChecked=0, Total=84390 [2024-11-27 23:43:29,040 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 4424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:29,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 412 Invalid, 4424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 23:43:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-11-27 23:43:29,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2541. [2024-11-27 23:43:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2498 states have (on average 1.0508406725380304) internal successors, (2625), 2498 states have internal predecessors, (2625), 3 states have call successors, (3), 2 states have call predecessors, (3), 39 states have return successors, (40), 40 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-27 23:43:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 2668 transitions. [2024-11-27 23:43:29,827 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 2668 transitions. Word has length 1493 [2024-11-27 23:43:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:29,829 INFO L471 AbstractCegarLoop]: Abstraction has 2541 states and 2668 transitions. [2024-11-27 23:43:29,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 153 states have (on average 2.176470588235294) internal successors, (333), 151 states have internal predecessors, (333), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 23:43:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 2668 transitions. [2024-11-27 23:43:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1540 [2024-11-27 23:43:29,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:29,857 INFO L218 NwaCegarLoop]: trace histogram [312, 312, 312, 312, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:43:29,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 23:43:30,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:30,062 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:43:30,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash 499282739, now seen corresponding path program 17 times [2024-11-27 23:43:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946974402] [2024-11-27 23:43:30,063 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:43:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:30,160 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-27 23:43:30,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 205473 backedges. 53753 proven. 865 refuted. 0 times theorem prover too weak. 150855 trivial. 0 not checked. [2024-11-27 23:43:31,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:43:31,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946974402] [2024-11-27 23:43:31,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946974402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:43:31,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265124420] [2024-11-27 23:43:31,254 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:43:31,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:43:31,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:43:31,256 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:43:31,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 23:43:33,028 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-27 23:43:33,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:43:33,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 23:43:33,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:43:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 205473 backedges. 53896 proven. 1522 refuted. 0 times theorem prover too weak. 150055 trivial. 0 not checked. [2024-11-27 23:43:33,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:43:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 205473 backedges. 54263 proven. 1155 refuted. 0 times theorem prover too weak. 150055 trivial. 0 not checked. [2024-11-27 23:43:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265124420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:43:53,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:43:53,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 41, 41] total 54 [2024-11-27 23:43:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112362434] [2024-11-27 23:43:53,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:43:53,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-27 23:43:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:43:53,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-27 23:43:53,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=2546, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 23:43:53,118 INFO L87 Difference]: Start difference. First operand 2541 states and 2668 transitions. Second operand has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 49 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:43:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:43:56,389 INFO L93 Difference]: Finished difference Result 4512 states and 4741 transitions. [2024-11-27 23:43:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-27 23:43:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 49 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1539 [2024-11-27 23:43:56,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:43:56,400 INFO L225 Difference]: With dead ends: 4512 [2024-11-27 23:43:56,400 INFO L226 Difference]: Without dead ends: 2223 [2024-11-27 23:43:56,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3189 GetRequests, 3030 SyntacticMatches, 32 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5461 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2285, Invalid=14227, Unknown=0, NotChecked=0, Total=16512 [2024-11-27 23:43:56,410 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:43:56,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 411 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:43:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2024-11-27 23:43:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2024-11-27 23:43:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2185 states have (on average 1.0421052631578946) internal successors, (2277), 2185 states have internal predecessors, (2277), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:43:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 2315 transitions. [2024-11-27 23:43:56,774 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 2315 transitions. Word has length 1539 [2024-11-27 23:43:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:43:56,775 INFO L471 AbstractCegarLoop]: Abstraction has 2223 states and 2315 transitions. [2024-11-27 23:43:56,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 49 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:43:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 2315 transitions. [2024-11-27 23:43:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1544 [2024-11-27 23:43:56,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:43:56,799 INFO L218 NwaCegarLoop]: trace histogram [313, 313, 313, 313, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:43:56,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-27 23:43:57,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-27 23:43:57,000 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:43:57,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:43:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1306127149, now seen corresponding path program 18 times [2024-11-27 23:43:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:43:57,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482778695] [2024-11-27 23:43:57,001 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:43:57,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:43:57,525 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-11-27 23:43:57,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:44:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 206746 backedges. 59580 proven. 3574 refuted. 0 times theorem prover too weak. 143592 trivial. 0 not checked. [2024-11-27 23:44:02,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482778695] [2024-11-27 23:44:02,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482778695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:44:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403829964] [2024-11-27 23:44:02,076 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:44:02,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:44:02,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:44:02,078 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:44:02,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:44:04,355 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 41 check-sat command(s) [2024-11-27 23:44:04,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:44:04,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 23:44:04,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:44:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 206746 backedges. 59580 proven. 3574 refuted. 0 times theorem prover too weak. 143592 trivial. 0 not checked. [2024-11-27 23:44:04,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:44:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 206746 backedges. 59580 proven. 3574 refuted. 0 times theorem prover too weak. 143592 trivial. 0 not checked. [2024-11-27 23:44:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403829964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:44:09,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:44:09,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-11-27 23:44:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774522799] [2024-11-27 23:44:09,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:44:09,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-27 23:44:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:44:09,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-27 23:44:09,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1781, Invalid=5875, Unknown=0, NotChecked=0, Total=7656 [2024-11-27 23:44:09,929 INFO L87 Difference]: Start difference. First operand 2223 states and 2315 transitions. Second operand has 88 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 86 states have internal predecessors, (195), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:44:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:44:16,367 INFO L93 Difference]: Finished difference Result 6716 states and 7360 transitions. [2024-11-27 23:44:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2024-11-27 23:44:16,368 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 86 states have internal predecessors, (195), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 1543 [2024-11-27 23:44:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:44:16,385 INFO L225 Difference]: With dead ends: 6716 [2024-11-27 23:44:16,385 INFO L226 Difference]: Without dead ends: 6401 [2024-11-27 23:44:16,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3244 GetRequests, 3042 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=9470, Invalid=31942, Unknown=0, NotChecked=0, Total=41412 [2024-11-27 23:44:16,393 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:44:16,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 190 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:44:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6401 states. [2024-11-27 23:44:16,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6401 to 2323. [2024-11-27 23:44:16,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2285 states have (on average 1.0503282275711159) internal successors, (2400), 2285 states have internal predecessors, (2400), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2024-11-27 23:44:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2438 transitions. [2024-11-27 23:44:16,800 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2438 transitions. Word has length 1543 [2024-11-27 23:44:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:44:16,801 INFO L471 AbstractCegarLoop]: Abstraction has 2323 states and 2438 transitions. [2024-11-27 23:44:16,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.2413793103448274) internal successors, (195), 86 states have internal predecessors, (195), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:44:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2438 transitions. [2024-11-27 23:44:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2024-11-27 23:44:16,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:44:16,819 INFO L218 NwaCegarLoop]: trace histogram [336, 336, 336, 336, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:44:16,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-27 23:44:17,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-27 23:44:17,020 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:44:17,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:44:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -745409757, now seen corresponding path program 19 times [2024-11-27 23:44:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:44:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998671572] [2024-11-27 23:44:17,021 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:44:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:44:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 237129 backedges. 69986 proven. 1810 refuted. 0 times theorem prover too weak. 165333 trivial. 0 not checked. [2024-11-27 23:44:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:44:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998671572] [2024-11-27 23:44:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998671572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:44:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524477316] [2024-11-27 23:44:25,998 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:44:25,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:44:25,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:44:26,000 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:44:26,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 23:44:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:44:28,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-27 23:44:28,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:44:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 237129 backedges. 69871 proven. 1918 refuted. 0 times theorem prover too weak. 165340 trivial. 0 not checked. [2024-11-27 23:44:28,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:45:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 237129 backedges. 69871 proven. 1918 refuted. 0 times theorem prover too weak. 165340 trivial. 0 not checked. [2024-11-27 23:45:16,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524477316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:45:16,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:45:16,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 56 [2024-11-27 23:45:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979673612] [2024-11-27 23:45:16,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:45:16,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-27 23:45:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:45:16,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-27 23:45:16,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2686, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:45:16,365 INFO L87 Difference]: Start difference. First operand 2323 states and 2438 transitions. Second operand has 56 states, 56 states have (on average 2.6964285714285716) internal successors, (151), 45 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 23:45:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:45:18,786 INFO L93 Difference]: Finished difference Result 4080 states and 4291 transitions. [2024-11-27 23:45:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-27 23:45:18,787 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.6964285714285716) internal successors, (151), 45 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 1635 [2024-11-27 23:45:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:45:18,796 INFO L225 Difference]: With dead ends: 4080 [2024-11-27 23:45:18,796 INFO L226 Difference]: Without dead ends: 2055 [2024-11-27 23:45:18,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3403 GetRequests, 3217 SyntacticMatches, 51 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7872 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2827, Invalid=15805, Unknown=0, NotChecked=0, Total=18632 [2024-11-27 23:45:18,802 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:45:18,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 528 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:45:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2024-11-27 23:45:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2055. [2024-11-27 23:45:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2021 states have (on average 1.0445324096981692) internal successors, (2111), 2021 states have internal predecessors, (2111), 3 states have call successors, (3), 2 states have call predecessors, (3), 30 states have return successors, (31), 31 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-27 23:45:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2145 transitions. [2024-11-27 23:45:19,267 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2145 transitions. Word has length 1635 [2024-11-27 23:45:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:45:19,268 INFO L471 AbstractCegarLoop]: Abstraction has 2055 states and 2145 transitions. [2024-11-27 23:45:19,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.6964285714285716) internal successors, (151), 45 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 23:45:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2145 transitions. [2024-11-27 23:45:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1640 [2024-11-27 23:45:19,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:45:19,284 INFO L218 NwaCegarLoop]: trace histogram [337, 337, 337, 337, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:45:19,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-27 23:45:19,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:45:19,485 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:45:19,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:45:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash -195210083, now seen corresponding path program 20 times [2024-11-27 23:45:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:45:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600347612] [2024-11-27 23:45:19,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:45:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:45:20,109 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:45:20,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:29,535 INFO L134 CoverageAnalysis]: Checked inductivity of 238498 backedges. 81858 proven. 2669 refuted. 0 times theorem prover too weak. 153971 trivial. 0 not checked. [2024-11-27 23:45:29,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:45:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600347612] [2024-11-27 23:45:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600347612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:45:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090150105] [2024-11-27 23:45:29,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:45:29,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:45:29,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:45:29,538 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:45:29,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 23:45:32,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:45:32,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:45:32,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-27 23:45:32,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:45:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 238498 backedges. 81954 proven. 2566 refuted. 0 times theorem prover too weak. 153978 trivial. 0 not checked. [2024-11-27 23:45:33,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:46:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 238498 backedges. 81954 proven. 2566 refuted. 0 times theorem prover too weak. 153978 trivial. 0 not checked. [2024-11-27 23:46:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090150105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:46:35,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:46:35,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 59 [2024-11-27 23:46:35,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055018412] [2024-11-27 23:46:35,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:46:35,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-27 23:46:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:46:35,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-27 23:46:35,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=3011, Unknown=0, NotChecked=0, Total=3422 [2024-11-27 23:46:35,793 INFO L87 Difference]: Start difference. First operand 2055 states and 2145 transitions. Second operand has 59 states, 59 states have (on average 2.694915254237288) internal successors, (159), 47 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-27 23:46:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:46:38,697 INFO L93 Difference]: Finished difference Result 3548 states and 3714 transitions. [2024-11-27 23:46:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-27 23:46:38,697 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.694915254237288) internal successors, (159), 47 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 1639 [2024-11-27 23:46:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:46:38,705 INFO L225 Difference]: With dead ends: 3548 [2024-11-27 23:46:38,705 INFO L226 Difference]: Without dead ends: 1841 [2024-11-27 23:46:38,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3437 GetRequests, 3222 SyntacticMatches, 56 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10207 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3899, Invalid=21861, Unknown=0, NotChecked=0, Total=25760 [2024-11-27 23:46:38,713 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:46:38,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 523 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:46:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2024-11-27 23:46:38,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1841. [2024-11-27 23:46:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1810 states have (on average 1.0403314917127071) internal successors, (1883), 1810 states have internal predecessors, (1883), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-27 23:46:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 1914 transitions. [2024-11-27 23:46:38,962 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 1914 transitions. Word has length 1639 [2024-11-27 23:46:38,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:46:38,962 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 1914 transitions. [2024-11-27 23:46:38,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.694915254237288) internal successors, (159), 47 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-27 23:46:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 1914 transitions. [2024-11-27 23:46:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1644 [2024-11-27 23:46:38,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:46:38,978 INFO L218 NwaCegarLoop]: trace histogram [338, 338, 338, 338, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:46:38,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 23:46:39,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:46:39,179 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:46:39,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:46:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1828743831, now seen corresponding path program 21 times [2024-11-27 23:46:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:46:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434820168] [2024-11-27 23:46:39,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:46:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:46:39,511 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 23:46:39,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 239871 backedges. 97292 proven. 13312 refuted. 0 times theorem prover too weak. 129267 trivial. 0 not checked. [2024-11-27 23:46:43,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:46:43,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434820168] [2024-11-27 23:46:43,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434820168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:46:43,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032335548] [2024-11-27 23:46:43,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:46:43,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:46:43,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:46:43,559 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:46:43,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 23:46:46,824 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-27 23:46:46,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:46:46,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 23:46:46,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:46:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 239871 backedges. 107219 proven. 20853 refuted. 0 times theorem prover too weak. 111799 trivial. 0 not checked. [2024-11-27 23:46:47,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:46:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 239871 backedges. 107219 proven. 20853 refuted. 0 times theorem prover too weak. 111799 trivial. 0 not checked. [2024-11-27 23:46:59,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032335548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:46:59,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:46:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50, 50] total 101 [2024-11-27 23:46:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400573775] [2024-11-27 23:46:59,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:46:59,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-27 23:46:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:46:59,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-27 23:46:59,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2015, Invalid=8287, Unknown=0, NotChecked=0, Total=10302 [2024-11-27 23:46:59,431 INFO L87 Difference]: Start difference. First operand 1841 states and 1914 transitions. Second operand has 102 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 96 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:47:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:47:22,725 INFO L93 Difference]: Finished difference Result 9260 states and 10092 transitions. [2024-11-27 23:47:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 461 states. [2024-11-27 23:47:22,726 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 96 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1643 [2024-11-27 23:47:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:47:22,744 INFO L225 Difference]: With dead ends: 9260 [2024-11-27 23:47:22,744 INFO L226 Difference]: Without dead ends: 8605 [2024-11-27 23:47:22,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3693 GetRequests, 3233 SyntacticMatches, 0 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90349 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=45377, Invalid=167605, Unknown=0, NotChecked=0, Total=212982 [2024-11-27 23:47:22,760 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:47:22,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 241 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:47:22,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8605 states. [2024-11-27 23:47:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8605 to 2037. [2024-11-27 23:47:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2006 states have (on average 1.0603190428713858) internal successors, (2127), 2006 states have internal predecessors, (2127), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-27 23:47:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 2158 transitions. [2024-11-27 23:47:23,222 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 2158 transitions. Word has length 1643 [2024-11-27 23:47:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:47:23,223 INFO L471 AbstractCegarLoop]: Abstraction has 2037 states and 2158 transitions. [2024-11-27 23:47:23,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.3366336633663365) internal successors, (236), 96 states have internal predecessors, (236), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:47:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 2158 transitions. [2024-11-27 23:47:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1836 [2024-11-27 23:47:23,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:47:23,244 INFO L218 NwaCegarLoop]: trace histogram [386, 386, 386, 386, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:47:23,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 23:47:23,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 23:47:23,444 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:47:23,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:47:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2084256119, now seen corresponding path program 22 times [2024-11-27 23:47:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:47:23,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335733715] [2024-11-27 23:47:23,446 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:47:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:47:24,046 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:47:24,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:47:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 310479 backedges. 131751 proven. 975 refuted. 0 times theorem prover too weak. 177753 trivial. 0 not checked. [2024-11-27 23:47:33,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:47:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335733715] [2024-11-27 23:47:33,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335733715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:47:33,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285612923] [2024-11-27 23:47:33,660 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:47:33,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:47:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:47:33,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:47:33,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 23:47:37,368 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:47:37,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:47:37,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-27 23:47:37,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:47:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 310479 backedges. 109907 proven. 3345 refuted. 0 times theorem prover too weak. 197227 trivial. 0 not checked. [2024-11-27 23:47:41,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:48:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 310479 backedges. 109907 proven. 3345 refuted. 0 times theorem prover too weak. 197227 trivial. 0 not checked. [2024-11-27 23:48:55,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285612923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:48:55,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:48:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 63, 63] total 120 [2024-11-27 23:48:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873907902] [2024-11-27 23:48:55,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:48:55,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2024-11-27 23:48:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:48:55,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2024-11-27 23:48:55,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=920, Invalid=13360, Unknown=0, NotChecked=0, Total=14280 [2024-11-27 23:48:55,246 INFO L87 Difference]: Start difference. First operand 2037 states and 2158 transitions. Second operand has 120 states, 120 states have (on average 2.4166666666666665) internal successors, (290), 106 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:49:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:49:10,285 INFO L93 Difference]: Finished difference Result 3574 states and 3809 transitions. [2024-11-27 23:49:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2024-11-27 23:49:10,285 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 120 states have (on average 2.4166666666666665) internal successors, (290), 106 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 1835 [2024-11-27 23:49:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:49:10,294 INFO L225 Difference]: With dead ends: 3574 [2024-11-27 23:49:10,294 INFO L226 Difference]: Without dead ends: 1939 [2024-11-27 23:49:10,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3964 GetRequests, 3548 SyntacticMatches, 61 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49737 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=8275, Invalid=118817, Unknown=0, NotChecked=0, Total=127092 [2024-11-27 23:49:10,301 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 15 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 11757 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 11773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:49:10,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1362 Invalid, 11773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11757 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-27 23:49:10,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2024-11-27 23:49:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1881. [2024-11-27 23:49:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1852 states have (on average 1.0593952483801297) internal successors, (1962), 1852 states have internal predecessors, (1962), 3 states have call successors, (3), 2 states have call predecessors, (3), 25 states have return successors, (26), 26 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 23:49:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 1991 transitions. [2024-11-27 23:49:10,670 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 1991 transitions. Word has length 1835 [2024-11-27 23:49:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:49:10,670 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 1991 transitions. [2024-11-27 23:49:10,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 120 states have (on average 2.4166666666666665) internal successors, (290), 106 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-27 23:49:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 1991 transitions. [2024-11-27 23:49:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1834 [2024-11-27 23:49:10,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:49:10,690 INFO L218 NwaCegarLoop]: trace histogram [388, 388, 388, 388, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-27 23:49:10,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 23:49:10,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:49:10,891 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:49:10,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:49:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash 584590155, now seen corresponding path program 23 times [2024-11-27 23:49:10,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:49:10,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333597803] [2024-11-27 23:49:10,892 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:49:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:49:11,243 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-11-27 23:49:11,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:49:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 313362 backedges. 139661 proven. 2692 refuted. 0 times theorem prover too weak. 171009 trivial. 0 not checked. [2024-11-27 23:49:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:49:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333597803] [2024-11-27 23:49:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333597803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:49:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425647231] [2024-11-27 23:49:18,436 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:49:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:49:18,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:49:18,439 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:49:18,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 23:49:22,844 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-11-27 23:49:22,844 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:49:22,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-27 23:49:22,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:49:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 313362 backedges. 130905 proven. 19948 refuted. 0 times theorem prover too weak. 162509 trivial. 0 not checked. [2024-11-27 23:49:24,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:50:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 313362 backedges. 130905 proven. 19948 refuted. 0 times theorem prover too weak. 162509 trivial. 0 not checked. [2024-11-27 23:50:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425647231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:50:32,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:50:32,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 76, 76] total 116 [2024-11-27 23:50:32,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562472064] [2024-11-27 23:50:32,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:50:32,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-27 23:50:32,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:50:32,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-27 23:50:32,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1111, Invalid=12229, Unknown=0, NotChecked=0, Total=13340 [2024-11-27 23:50:32,685 INFO L87 Difference]: Start difference. First operand 1881 states and 1991 transitions. Second operand has 116 states, 116 states have (on average 2.5086206896551726) internal successors, (291), 103 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-27 23:50:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:50:49,861 INFO L93 Difference]: Finished difference Result 3632 states and 3869 transitions. [2024-11-27 23:50:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 416 states. [2024-11-27 23:50:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.5086206896551726) internal successors, (291), 103 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1833 [2024-11-27 23:50:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:50:49,871 INFO L225 Difference]: With dead ends: 3632 [2024-11-27 23:50:49,871 INFO L226 Difference]: Without dead ends: 2153 [2024-11-27 23:50:49,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4071 GetRequests, 3569 SyntacticMatches, 49 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86527 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=20174, Invalid=186396, Unknown=0, NotChecked=0, Total=206570 [2024-11-27 23:50:49,897 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:50:49,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 332 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 23:50:49,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2024-11-27 23:50:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2024-11-27 23:50:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2120 states have (on average 1.058490566037736) internal successors, (2244), 2120 states have internal predecessors, (2244), 3 states have call successors, (3), 2 states have call predecessors, (3), 29 states have return successors, (30), 30 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-27 23:50:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2277 transitions. [2024-11-27 23:50:50,486 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2277 transitions. Word has length 1833 [2024-11-27 23:50:50,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:50:50,487 INFO L471 AbstractCegarLoop]: Abstraction has 2153 states and 2277 transitions. [2024-11-27 23:50:50,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.5086206896551726) internal successors, (291), 103 states have internal predecessors, (291), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-27 23:50:50,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2277 transitions. [2024-11-27 23:50:50,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2096 [2024-11-27 23:50:50,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:50:50,529 INFO L218 NwaCegarLoop]: trace histogram [440, 440, 440, 440, 32, 31, 31, 31, 31, 29, 29, 29, 29, 29, 28, 1, 1, 1, 1, 1, 1] [2024-11-27 23:50:50,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-27 23:50:50,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:50:50,730 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-27 23:50:50,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:50:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2095501821, now seen corresponding path program 24 times [2024-11-27 23:50:50,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:50:50,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182941171] [2024-11-27 23:50:50,732 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:50:50,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:50:51,559 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2024-11-27 23:50:51,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:51:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 403903 backedges. 193815 proven. 53473 refuted. 0 times theorem prover too weak. 156615 trivial. 0 not checked. [2024-11-27 23:51:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:51:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182941171] [2024-11-27 23:51:01,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182941171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:51:01,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525408072] [2024-11-27 23:51:01,823 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:51:01,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:51:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:51:01,826 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:51:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2853fdb-cc52-4ec5-88de-0967ef6e740f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-27 23:51:07,144 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 53 check-sat command(s) [2024-11-27 23:51:07,144 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:51:07,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-27 23:51:07,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:51:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 403903 backedges. 193815 proven. 53473 refuted. 0 times theorem prover too weak. 156615 trivial. 0 not checked. [2024-11-27 23:51:08,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:51:30,084 INFO L134 CoverageAnalysis]: Checked inductivity of 403903 backedges. 193815 proven. 53473 refuted. 0 times theorem prover too weak. 156615 trivial. 0 not checked. [2024-11-27 23:51:30,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525408072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:51:30,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:51:30,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 113 [2024-11-27 23:51:30,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656660413] [2024-11-27 23:51:30,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:51:30,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-27 23:51:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:51:30,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-27 23:51:30,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2391, Invalid=10491, Unknown=0, NotChecked=0, Total=12882 [2024-11-27 23:51:30,090 INFO L87 Difference]: Start difference. First operand 2153 states and 2277 transitions. Second operand has 114 states, 113 states have (on average 2.3451327433628317) internal successors, (265), 106 states have internal predecessors, (265), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9)