./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1.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_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/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_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/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_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:00:46,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:00:46,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-28 03:00:46,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:00:46,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:00:46,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:00:46,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:00:46,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:00:46,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:00:46,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:00:46,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:00:46,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:00:46,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:00:46,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:00:46,784 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:00:46,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:00:46,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:00:46,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:00:46,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:00:46,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:00:46,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:00:46,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:00:46,786 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:46,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:46,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:46,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:00:46,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:00:46,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:00:46,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:00:46,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:00:46,788 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_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/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 -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2024-11-28 03:00:47,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:00:47,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:00:47,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:00:47,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:00:47,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:00:47,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2024-11-28 03:00:50,267 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/aff043dcc/b3a4643a5a6545faaa78dd591a113686/FLAGb5cf3006f [2024-11-28 03:00:50,573 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:00:50,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/sv-benchmarks/c/termination-numeric/rec_counter1.c [2024-11-28 03:00:50,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/aff043dcc/b3a4643a5a6545faaa78dd591a113686/FLAGb5cf3006f [2024-11-28 03:00:50,602 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/data/aff043dcc/b3a4643a5a6545faaa78dd591a113686 [2024-11-28 03:00:50,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:00:50,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:00:50,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:50,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:00:50,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:00:50,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50, skipping insertion in model container [2024-11-28 03:00:50,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,636 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:00:50,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:50,807 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:00:50,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:00:50,842 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:00:50,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50 WrapperNode [2024-11-28 03:00:50,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:00:50,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:50,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:00:50,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:00:50,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,881 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2024-11-28 03:00:50,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:00:50,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:00:50,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:00:50,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:00:50,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,904 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 03:00:50,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,908 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:00:50,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:00:50,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:00:50,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:00:50,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2024-11-28 03:00:50,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:00:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:50,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:00:50,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:00:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2024-11-28 03:00:51,019 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2024-11-28 03:00:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:00:51,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:00:51,088 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:00:51,090 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:00:51,299 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 03:00:51,299 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:00:51,318 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:00:51,319 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:00:51,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:51 BoogieIcfgContainer [2024-11-28 03:00:51,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:00:51,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:00:51,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:00:51,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:00:51,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:50" (1/3) ... [2024-11-28 03:00:51,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f20dfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:51, skipping insertion in model container [2024-11-28 03:00:51,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (2/3) ... [2024-11-28 03:00:51,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f20dfed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:51, skipping insertion in model container [2024-11-28 03:00:51,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:51" (3/3) ... [2024-11-28 03:00:51,337 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2024-11-28 03:00:51,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:00:51,362 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_counter1.c that has 2 procedures, 28 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-28 03:00:51,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:00:51,443 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;@3787f3e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:00:51,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 03:00:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:00:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:00:51,456 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:51,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:51,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:51,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:51,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2006051958, now seen corresponding path program 1 times [2024-11-28 03:00:51,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793184879] [2024-11-28 03:00:51,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:51,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:51,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793184879] [2024-11-28 03:00:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793184879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:51,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:51,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:00:51,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583974294] [2024-11-28 03:00:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:51,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:00:51,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:51,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:00:51,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:00:51,811 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:00:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:51,964 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-28 03:00:51,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:00:51,967 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 [2024-11-28 03:00:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:51,974 INFO L225 Difference]: With dead ends: 66 [2024-11-28 03:00:51,974 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 03:00:51,978 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 [2024-11-28 03:00:51,981 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 98 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 [2024-11-28 03:00:51,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 03:00:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-28 03:00:52,023 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) [2024-11-28 03:00:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-11-28 03:00:52,035 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 7 [2024-11-28 03:00:52,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:52,036 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-11-28 03:00:52,036 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) [2024-11-28 03:00:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-11-28 03:00:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:00:52,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:52,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:52,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:00:52,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:52,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:52,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2058068592, now seen corresponding path program 1 times [2024-11-28 03:00:52,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878671103] [2024-11-28 03:00:52,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:52,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:52,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878671103] [2024-11-28 03:00:52,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878671103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:52,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:52,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:00:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925410910] [2024-11-28 03:00:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:52,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:00:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:52,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:00:52,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:00:52,127 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) [2024-11-28 03:00:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:52,200 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-11-28 03:00:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:00:52,202 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 [2024-11-28 03:00:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:52,204 INFO L225 Difference]: With dead ends: 38 [2024-11-28 03:00:52,204 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 03:00:52,205 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 [2024-11-28 03:00:52,206 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 [2024-11-28 03:00:52,206 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] [2024-11-28 03:00:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 03:00:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-28 03:00:52,217 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) [2024-11-28 03:00:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-28 03:00:52,219 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 8 [2024-11-28 03:00:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:52,219 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-28 03:00:52,219 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) [2024-11-28 03:00:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-28 03:00:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 03:00:52,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:52,220 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:52,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:00:52,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:52,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash 509078404, now seen corresponding path program 1 times [2024-11-28 03:00:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:52,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277357851] [2024-11-28 03:00:52,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:52,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277357851] [2024-11-28 03:00:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277357851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442760899] [2024-11-28 03:00:52,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:52,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:52,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:52,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:00:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:52,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:00:52,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:00:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442760899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:52,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-28 03:00:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293778643] [2024-11-28 03:00:52,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:52,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:00:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:52,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:00:52,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:00:52,795 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) [2024-11-28 03:00:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:52,972 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-11-28 03:00:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:00:52,973 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 [2024-11-28 03:00:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:52,974 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:00:52,974 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 03:00:52,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:00:52,976 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 138 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 78 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 [2024-11-28 03:00:52,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 78 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 03:00:52,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-28 03:00:52,995 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) [2024-11-28 03:00:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-28 03:00:52,999 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 12 [2024-11-28 03:00:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:52,999 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-28 03:00:53,000 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) [2024-11-28 03:00:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-28 03:00:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:00:53,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:53,001 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:53,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:00:53,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:53,202 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:53,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash 294367429, now seen corresponding path program 1 times [2024-11-28 03:00:53,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:53,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009344920] [2024-11-28 03:00:53,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:53,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:00:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009344920] [2024-11-28 03:00:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009344920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:53,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:00:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142926193] [2024-11-28 03:00:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:53,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:00:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:53,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:00:53,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:00:53,266 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) [2024-11-28 03:00:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:53,279 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-11-28 03:00:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:00:53,280 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 [2024-11-28 03:00:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:53,280 INFO L225 Difference]: With dead ends: 34 [2024-11-28 03:00:53,280 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:00:53,281 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 [2024-11-28 03:00:53,282 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 [2024-11-28 03:00:53,282 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] [2024-11-28 03:00:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:00:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-28 03:00:53,288 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) [2024-11-28 03:00:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-28 03:00:53,289 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 16 [2024-11-28 03:00:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:53,289 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-28 03:00:53,290 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) [2024-11-28 03:00:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-28 03:00:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:00:53,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:53,290 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:53,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:00:53,291 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:53,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 535453558, now seen corresponding path program 1 times [2024-11-28 03:00:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086815672] [2024-11-28 03:00:53,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:00:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086815672] [2024-11-28 03:00:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086815672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615660897] [2024-11-28 03:00:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:53,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:53,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:53,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:53,355 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) [2024-11-28 03:00:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:53,382 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-28 03:00:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:53,383 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 [2024-11-28 03:00:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:53,383 INFO L225 Difference]: With dead ends: 33 [2024-11-28 03:00:53,383 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:00:53,384 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 [2024-11-28 03:00:53,385 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 [2024-11-28 03:00:53,385 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] [2024-11-28 03:00:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:00:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 03:00:53,392 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) [2024-11-28 03:00:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-11-28 03:00:53,393 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 17 [2024-11-28 03:00:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:53,394 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-11-28 03:00:53,394 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) [2024-11-28 03:00:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-11-28 03:00:53,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:00:53,395 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:53,395 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:53,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:00:53,395 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:53,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 535455768, now seen corresponding path program 1 times [2024-11-28 03:00:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:53,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148851662] [2024-11-28 03:00:53,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:53,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:00:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148851662] [2024-11-28 03:00:53,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148851662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:00:53,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379228817] [2024-11-28 03:00:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:53,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:00:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:53,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:00:53,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:00:53,505 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) [2024-11-28 03:00:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:53,551 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-28 03:00:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:00:53,552 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 [2024-11-28 03:00:53,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:53,554 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:00:53,556 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 03:00:53,556 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 [2024-11-28 03:00:53,557 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 [2024-11-28 03:00:53,558 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] [2024-11-28 03:00:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 03:00:53,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-28 03:00:53,571 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) [2024-11-28 03:00:53,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-28 03:00:53,575 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2024-11-28 03:00:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:53,576 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-28 03:00:53,576 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) [2024-11-28 03:00:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-28 03:00:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:00:53,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:53,577 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:53,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:00:53,581 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:53,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -580808832, now seen corresponding path program 1 times [2024-11-28 03:00:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:53,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975667302] [2024-11-28 03:00:53,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:00:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975667302] [2024-11-28 03:00:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975667302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:00:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:00:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815262476] [2024-11-28 03:00:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:53,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:00:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:53,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:00:53,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:00:53,744 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) [2024-11-28 03:00:53,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:53,793 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-11-28 03:00:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:00:53,794 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 [2024-11-28 03:00:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:53,795 INFO L225 Difference]: With dead ends: 64 [2024-11-28 03:00:53,795 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 03:00:53,795 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 [2024-11-28 03:00:53,796 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 [2024-11-28 03:00:53,797 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] [2024-11-28 03:00:53,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 03:00:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 03:00:53,806 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) [2024-11-28 03:00:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-28 03:00:53,807 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 18 [2024-11-28 03:00:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:53,808 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-28 03:00:53,808 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) [2024-11-28 03:00:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-28 03:00:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:00:53,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:53,809 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] [2024-11-28 03:00:53,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:00:53,810 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:53,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1112546151, now seen corresponding path program 1 times [2024-11-28 03:00:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:53,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770807209] [2024-11-28 03:00:53,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:53,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:00:54,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770807209] [2024-11-28 03:00:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770807209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686246474] [2024-11-28 03:00:54,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:54,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:54,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:54,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:54,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:00:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:00:54,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:00:54,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:54,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686246474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:54,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:54,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-28 03:00:54,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419735827] [2024-11-28 03:00:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:54,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:00:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:54,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:00:54,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:00:54,238 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) [2024-11-28 03:00:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:54,291 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-28 03:00:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:00:54,292 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 [2024-11-28 03:00:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:54,293 INFO L225 Difference]: With dead ends: 40 [2024-11-28 03:00:54,293 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 03:00:54,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:00:54,294 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 [2024-11-28 03:00:54,294 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] [2024-11-28 03:00:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 03:00:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 03:00:54,309 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) [2024-11-28 03:00:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-28 03:00:54,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 29 [2024-11-28 03:00:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:54,310 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-28 03:00:54,310 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) [2024-11-28 03:00:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-28 03:00:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 03:00:54,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:54,318 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] [2024-11-28 03:00:54,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:00:54,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:54,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:54,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 400286809, now seen corresponding path program 1 times [2024-11-28 03:00:54,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:54,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667663691] [2024-11-28 03:00:54,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:54,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:00:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667663691] [2024-11-28 03:00:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667663691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784291996] [2024-11-28 03:00:54,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:54,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:54,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:00:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:54,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:00:54,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:00:54,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:00:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784291996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:55,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2024-11-28 03:00:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042222294] [2024-11-28 03:00:55,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:55,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:00:55,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:55,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:00:55,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:00:55,143 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) [2024-11-28 03:00:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:55,529 INFO L93 Difference]: Finished difference Result 132 states and 159 transitions. [2024-11-28 03:00:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:00:55,530 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 [2024-11-28 03:00:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:55,531 INFO L225 Difference]: With dead ends: 132 [2024-11-28 03:00:55,531 INFO L226 Difference]: Without dead ends: 93 [2024-11-28 03:00:55,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:00:55,537 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:55,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 127 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-28 03:00:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-28 03:00:55,570 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) [2024-11-28 03:00:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2024-11-28 03:00:55,575 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 32 [2024-11-28 03:00:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:55,576 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2024-11-28 03:00:55,576 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) [2024-11-28 03:00:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2024-11-28 03:00:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 03:00:55,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:55,580 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] [2024-11-28 03:00:55,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:55,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:00:55,780 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:55,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash -933322094, now seen corresponding path program 2 times [2024-11-28 03:00:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290268196] [2024-11-28 03:00:55,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:55,875 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:55,875 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 137 proven. 27 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 03:00:56,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290268196] [2024-11-28 03:00:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290268196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68060485] [2024-11-28 03:00:56,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:00:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:56,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:56,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:00:56,721 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:00:56,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:56,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:00:56,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 122 proven. 42 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 03:00:56,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 122 proven. 42 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 03:00:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68060485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:58,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-11-28 03:00:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557913705] [2024-11-28 03:00:58,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:58,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:00:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:58,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:00:58,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:00:58,244 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) [2024-11-28 03:00:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:58,558 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2024-11-28 03:00:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:00:58,559 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 [2024-11-28 03:00:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:58,561 INFO L225 Difference]: With dead ends: 164 [2024-11-28 03:00:58,561 INFO L226 Difference]: Without dead ends: 97 [2024-11-28 03:00:58,562 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 [2024-11-28 03:00:58,567 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:58,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 256 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:00:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-28 03:00:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-28 03:00:58,592 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) [2024-11-28 03:00:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2024-11-28 03:00:58,594 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 99 [2024-11-28 03:00:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:58,594 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2024-11-28 03:00:58,595 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) [2024-11-28 03:00:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2024-11-28 03:00:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 03:00:58,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:58,597 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 03:00:58,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:00:58,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:00:58,799 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:58,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2064942138, now seen corresponding path program 3 times [2024-11-28 03:00:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684486935] [2024-11-28 03:00:58,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:00:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:58,843 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:00:58,844 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 03:00:59,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:00:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684486935] [2024-11-28 03:00:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684486935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:00:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989709086] [2024-11-28 03:00:59,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:00:59,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:00:59,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:00:59,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:00:59,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:00:59,122 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 03:00:59,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:00:59,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:00:59,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 03:00:59,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:00:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 03:00:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989709086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:00:59,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:00:59,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 03:00:59,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217548682] [2024-11-28 03:00:59,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:00:59,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:00:59,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:59,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:00:59,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:00:59,538 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) [2024-11-28 03:00:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:59,657 INFO L93 Difference]: Finished difference Result 210 states and 241 transitions. [2024-11-28 03:00:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:00:59,658 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 97 [2024-11-28 03:00:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:59,660 INFO L225 Difference]: With dead ends: 210 [2024-11-28 03:00:59,661 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 03:00:59,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:00:59,662 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:00:59,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 64 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:00:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 03:00:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 129. [2024-11-28 03:00:59,689 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) [2024-11-28 03:00:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2024-11-28 03:00:59,690 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 97 [2024-11-28 03:00:59,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:59,691 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2024-11-28 03:00:59,691 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) [2024-11-28 03:00:59,691 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2024-11-28 03:00:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 03:00:59,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:59,693 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] [2024-11-28 03:00:59,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:00:59,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 03:00:59,895 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:00:59,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:59,895 INFO L85 PathProgramCache]: Analyzing trace with hash 933192110, now seen corresponding path program 4 times [2024-11-28 03:00:59,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718590085] [2024-11-28 03:00:59,896 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:00:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:00:59,938 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:00:59,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 186 proven. 112 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-28 03:01:00,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718590085] [2024-11-28 03:01:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718590085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404153445] [2024-11-28 03:01:00,407 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:01:00,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:00,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:00,410 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:00,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:01:00,514 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:01:00,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:00,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:01:00,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-28 03:01:00,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2024-11-28 03:01:02,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404153445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:02,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:02,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 38 [2024-11-28 03:01:02,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822287607] [2024-11-28 03:01:02,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:02,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:01:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:02,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:01:02,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:01:02,495 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) [2024-11-28 03:01:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:04,132 INFO L93 Difference]: Finished difference Result 540 states and 598 transitions. [2024-11-28 03:01:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-28 03:01:04,133 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 [2024-11-28 03:01:04,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:04,136 INFO L225 Difference]: With dead ends: 540 [2024-11-28 03:01:04,136 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 03:01:04,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1360, Invalid=7952, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 03:01:04,144 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:04,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 220 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:04,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 03:01:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 261. [2024-11-28 03:01:04,176 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) [2024-11-28 03:01:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 284 transitions. [2024-11-28 03:01:04,178 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 284 transitions. Word has length 113 [2024-11-28 03:01:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:04,179 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 284 transitions. [2024-11-28 03:01:04,179 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) [2024-11-28 03:01:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 284 transitions. [2024-11-28 03:01:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 03:01:04,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:04,185 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] [2024-11-28 03:01:04,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:04,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:01:04,385 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:04,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1261351372, now seen corresponding path program 5 times [2024-11-28 03:01:04,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:04,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-28 03:01:04,386 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:04,441 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:01:04,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1923 proven. 205 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2024-11-28 03:01:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-28 03:01:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005051484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694806729] [2024-11-28 03:01:05,146 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:05,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:05,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:05,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:05,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:01:05,294 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-28 03:01:05,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:05,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:01:05,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1907 proven. 240 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2024-11-28 03:01:05,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 1951 proven. 196 refuted. 0 times theorem prover too weak. 1670 trivial. 0 not checked. [2024-11-28 03:01:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694806729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:08,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 28 [2024-11-28 03:01:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010390839] [2024-11-28 03:01:08,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:01:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:08,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:01:08,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:01:08,306 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) [2024-11-28 03:01:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:09,225 INFO L93 Difference]: Finished difference Result 610 states and 670 transitions. [2024-11-28 03:01:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:01:09,226 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 [2024-11-28 03:01:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:09,230 INFO L225 Difference]: With dead ends: 610 [2024-11-28 03:01:09,230 INFO L226 Difference]: Without dead ends: 391 [2024-11-28 03:01:09,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 546 SyntacticMatches, 18 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=454, Invalid=2302, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 03:01:09,235 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:09,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 262 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:01:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-28 03:01:09,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 369. [2024-11-28 03:01:09,297 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) [2024-11-28 03:01:09,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 389 transitions. [2024-11-28 03:01:09,301 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 389 transitions. Word has length 285 [2024-11-28 03:01:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:09,302 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 389 transitions. [2024-11-28 03:01:09,302 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) [2024-11-28 03:01:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 389 transitions. [2024-11-28 03:01:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-28 03:01:09,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:09,311 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:09,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:09,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:01:09,512 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:09,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1838512406, now seen corresponding path program 6 times [2024-11-28 03:01:09,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:09,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430562058] [2024-11-28 03:01:09,513 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:01:09,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:09,618 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:01:09,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2024-11-28 03:01:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430562058] [2024-11-28 03:01:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430562058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618456334] [2024-11-28 03:01:10,426 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:01:10,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:10,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:10,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:10,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:01:10,630 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:01:10,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:10,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:01:10,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2024-11-28 03:01:10,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 1692 proven. 200 refuted. 0 times theorem prover too weak. 2760 trivial. 0 not checked. [2024-11-28 03:01:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618456334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:11,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-28 03:01:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061777683] [2024-11-28 03:01:11,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:11,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:01:11,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:11,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:01:11,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=779, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:01:11,881 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) [2024-11-28 03:01:12,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:12,892 INFO L93 Difference]: Finished difference Result 1504 states and 1680 transitions. [2024-11-28 03:01:12,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 03:01:12,893 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 305 [2024-11-28 03:01:12,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:12,902 INFO L225 Difference]: With dead ends: 1504 [2024-11-28 03:01:12,902 INFO L226 Difference]: Without dead ends: 1421 [2024-11-28 03:01:12,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=916, Invalid=3116, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:01:12,906 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:12,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 140 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2024-11-28 03:01:12,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 429. [2024-11-28 03:01:12,975 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) [2024-11-28 03:01:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 460 transitions. [2024-11-28 03:01:12,979 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 460 transitions. Word has length 305 [2024-11-28 03:01:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:12,980 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 460 transitions. [2024-11-28 03:01:12,980 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) [2024-11-28 03:01:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 460 transitions. [2024-11-28 03:01:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-28 03:01:12,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:12,988 INFO L218 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:13,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:13,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:01:13,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:13,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash 537480404, now seen corresponding path program 7 times [2024-11-28 03:01:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905702764] [2024-11-28 03:01:13,190 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:01:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6841 backedges. 4009 proven. 178 refuted. 0 times theorem prover too weak. 2654 trivial. 0 not checked. [2024-11-28 03:01:14,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:14,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905702764] [2024-11-28 03:01:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905702764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133868131] [2024-11-28 03:01:14,810 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:01:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:14,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:14,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:01:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:01:15,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:01:15,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6841 backedges. 3646 proven. 396 refuted. 0 times theorem prover too weak. 2799 trivial. 0 not checked. [2024-11-28 03:01:15,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6841 backedges. 3646 proven. 396 refuted. 0 times theorem prover too weak. 2799 trivial. 0 not checked. [2024-11-28 03:01:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133868131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:22,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:22,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2024-11-28 03:01:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350053410] [2024-11-28 03:01:22,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:22,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:01:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:22,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:01:22,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:01:22,582 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) [2024-11-28 03:01:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:24,392 INFO L93 Difference]: Finished difference Result 1015 states and 1087 transitions. [2024-11-28 03:01:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-28 03:01:24,393 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 349 [2024-11-28 03:01:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:24,398 INFO L225 Difference]: With dead ends: 1015 [2024-11-28 03:01:24,398 INFO L226 Difference]: Without dead ends: 704 [2024-11-28 03:01:24,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 648 SyntacticMatches, 31 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3325 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=823, Invalid=6659, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 03:01:24,403 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:24,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 398 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:01:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-28 03:01:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 541. [2024-11-28 03:01:24,472 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) [2024-11-28 03:01:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 574 transitions. [2024-11-28 03:01:24,476 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 574 transitions. Word has length 349 [2024-11-28 03:01:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:24,477 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 574 transitions. [2024-11-28 03:01:24,477 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) [2024-11-28 03:01:24,477 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 574 transitions. [2024-11-28 03:01:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-28 03:01:24,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:24,485 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 55, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:24,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:24,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:24,689 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:24,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1346255368, now seen corresponding path program 8 times [2024-11-28 03:01:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908073587] [2024-11-28 03:01:24,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:01:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:24,821 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:24,821 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7172 backedges. 4502 proven. 261 refuted. 0 times theorem prover too weak. 2409 trivial. 0 not checked. [2024-11-28 03:01:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908073587] [2024-11-28 03:01:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908073587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46897779] [2024-11-28 03:01:26,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:01:26,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:26,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:26,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:26,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:01:26,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:01:26,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:26,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:01:26,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7172 backedges. 4454 proven. 640 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2024-11-28 03:01:26,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7172 backedges. 4454 proven. 640 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2024-11-28 03:01:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46897779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:34,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 49 [2024-11-28 03:01:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530383333] [2024-11-28 03:01:34,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:34,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:01:34,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:34,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:01:34,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:01:34,450 INFO L87 Difference]: Start difference. First operand 541 states and 574 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 41 states have internal predecessors, (136), 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) [2024-11-28 03:01:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:36,863 INFO L93 Difference]: Finished difference Result 1118 states and 1183 transitions. [2024-11-28 03:01:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-28 03:01:36,864 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 41 states have internal predecessors, (136), 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 347 [2024-11-28 03:01:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:36,872 INFO L225 Difference]: With dead ends: 1118 [2024-11-28 03:01:36,872 INFO L226 Difference]: Without dead ends: 787 [2024-11-28 03:01:36,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 638 SyntacticMatches, 36 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1249, Invalid=10523, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 03:01:36,879 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:36,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 456 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:01:36,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-28 03:01:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 682. [2024-11-28 03:01:36,995 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) [2024-11-28 03:01:36,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 718 transitions. [2024-11-28 03:01:37,000 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 718 transitions. Word has length 347 [2024-11-28 03:01:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:37,002 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 718 transitions. [2024-11-28 03:01:37,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 41 states have internal predecessors, (136), 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) [2024-11-28 03:01:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 718 transitions. [2024-11-28 03:01:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-28 03:01:37,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:37,008 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] [2024-11-28 03:01:37,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:01:37,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:01:37,208 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:37,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1478784516, now seen corresponding path program 9 times [2024-11-28 03:01:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844861536] [2024-11-28 03:01:37,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:01:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:37,294 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:01:37,294 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-28 03:01:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844861536] [2024-11-28 03:01:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844861536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805588914] [2024-11-28 03:01:38,114 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:01:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:38,117 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:38,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:01:38,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:01:38,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:38,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:01:38,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-28 03:01:38,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7638 backedges. 3690 proven. 1261 refuted. 0 times theorem prover too weak. 2687 trivial. 0 not checked. [2024-11-28 03:01:40,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805588914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:40,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-28 03:01:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39285731] [2024-11-28 03:01:40,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:40,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:01:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:40,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:01:40,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1683, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:01:40,688 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) [2024-11-28 03:01:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:43,483 INFO L93 Difference]: Finished difference Result 2779 states and 3058 transitions. [2024-11-28 03:01:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-28 03:01:43,484 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 [2024-11-28 03:01:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:43,497 INFO L225 Difference]: With dead ends: 2779 [2024-11-28 03:01:43,497 INFO L226 Difference]: Without dead ends: 2600 [2024-11-28 03:01:43,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5934 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3816, Invalid=14006, Unknown=0, NotChecked=0, Total=17822 [2024-11-28 03:01:43,506 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:43,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 193 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2024-11-28 03:01:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 795. [2024-11-28 03:01:43,679 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) [2024-11-28 03:01:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 850 transitions. [2024-11-28 03:01:43,684 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 850 transitions. Word has length 355 [2024-11-28 03:01:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:43,685 INFO L471 AbstractCegarLoop]: Abstraction has 795 states and 850 transitions. [2024-11-28 03:01:43,685 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) [2024-11-28 03:01:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 850 transitions. [2024-11-28 03:01:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-28 03:01:43,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:43,691 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 76, 76, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 03:01:43,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:01:43,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:01:43,896 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:43,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1073330250, now seen corresponding path program 10 times [2024-11-28 03:01:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581090158] [2024-11-28 03:01:43,898 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:01:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:44,007 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:01:44,007 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 12982 backedges. 5880 proven. 177 refuted. 0 times theorem prover too weak. 6925 trivial. 0 not checked. [2024-11-28 03:01:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581090158] [2024-11-28 03:01:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581090158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20265793] [2024-11-28 03:01:45,382 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:01:45,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:45,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:45,387 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:45,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:01:45,800 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:01:45,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:45,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 03:01:45,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12982 backedges. 5327 proven. 940 refuted. 0 times theorem prover too weak. 6715 trivial. 0 not checked. [2024-11-28 03:01:46,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:01:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 12982 backedges. 5327 proven. 940 refuted. 0 times theorem prover too weak. 6715 trivial. 0 not checked. [2024-11-28 03:01:51,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20265793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:01:51,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:01:51,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 35, 35] total 46 [2024-11-28 03:01:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949452926] [2024-11-28 03:01:51,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:01:51,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:01:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:01:51,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:01:51,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1863, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:01:51,736 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) [2024-11-28 03:01:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:01:52,796 INFO L93 Difference]: Finished difference Result 1136 states and 1224 transitions. [2024-11-28 03:01:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 03:01:52,796 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 441 [2024-11-28 03:01:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:01:52,799 INFO L225 Difference]: With dead ends: 1136 [2024-11-28 03:01:52,800 INFO L226 Difference]: Without dead ends: 479 [2024-11-28 03:01:52,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 833 SyntacticMatches, 32 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3891 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1068, Invalid=7488, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 03:01:52,803 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:01:52,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 228 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:01:52,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-28 03:01:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-28 03:01:52,873 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) [2024-11-28 03:01:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 513 transitions. [2024-11-28 03:01:52,876 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 513 transitions. Word has length 441 [2024-11-28 03:01:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:01:52,877 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 513 transitions. [2024-11-28 03:01:52,877 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) [2024-11-28 03:01:52,878 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 513 transitions. [2024-11-28 03:01:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-28 03:01:52,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:01:52,882 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] [2024-11-28 03:01:52,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:01:53,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:01:53,086 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:01:53,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:01:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2064272339, now seen corresponding path program 11 times [2024-11-28 03:01:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:01:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117054826] [2024-11-28 03:01:53,087 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:01:53,180 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:01:53,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7606 proven. 831 refuted. 0 times theorem prover too weak. 6581 trivial. 0 not checked. [2024-11-28 03:01:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:01:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117054826] [2024-11-28 03:01:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117054826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:01:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495509459] [2024-11-28 03:01:54,709 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:01:54,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:01:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:01:54,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:01:54,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:01:55,185 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:01:55,186 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:01:55,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 03:01:55,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:01:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7126 proven. 1386 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2024-11-28 03:01:55,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:02:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15018 backedges. 7126 proven. 1386 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2024-11-28 03:02:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495509459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:02:00,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:02:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 37] total 46 [2024-11-28 03:02:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757760731] [2024-11-28 03:02:00,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:02:00,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:02:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:00,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:02:00,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:02:00,913 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) [2024-11-28 03:02:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:02,296 INFO L93 Difference]: Finished difference Result 854 states and 922 transitions. [2024-11-28 03:02:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-28 03:02:02,297 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 [2024-11-28 03:02:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:02,302 INFO L225 Difference]: With dead ends: 854 [2024-11-28 03:02:02,302 INFO L226 Difference]: Without dead ends: 513 [2024-11-28 03:02:02,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 892 SyntacticMatches, 29 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4280 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1268, Invalid=10074, Unknown=0, NotChecked=0, Total=11342 [2024-11-28 03:02:02,307 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:02,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 225 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:02:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-28 03:02:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2024-11-28 03:02:02,391 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) [2024-11-28 03:02:02,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 547 transitions. [2024-11-28 03:02:02,394 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 547 transitions. Word has length 466 [2024-11-28 03:02:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:02,395 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 547 transitions. [2024-11-28 03:02:02,395 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) [2024-11-28 03:02:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 547 transitions. [2024-11-28 03:02:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-28 03:02:02,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:02,400 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 89, 16, 15, 15, 15, 15, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:02,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:02:02,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:02,600 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:02:02,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1028183698, now seen corresponding path program 12 times [2024-11-28 03:02:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:02,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378117697] [2024-11-28 03:02:02,601 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:02:02,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:02,745 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-28 03:02:02,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17844 backedges. 8451 proven. 4446 refuted. 0 times theorem prover too weak. 4947 trivial. 0 not checked. [2024-11-28 03:02:04,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378117697] [2024-11-28 03:02:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378117697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526249092] [2024-11-28 03:02:04,184 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:02:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:04,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:04,187 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:04,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:02:04,723 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-28 03:02:04,723 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:02:04,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 03:02:04,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17844 backedges. 695 proven. 14790 refuted. 0 times theorem prover too weak. 2359 trivial. 0 not checked. [2024-11-28 03:02:05,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:02:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17844 backedges. 695 proven. 14790 refuted. 0 times theorem prover too weak. 2359 trivial. 0 not checked. [2024-11-28 03:02:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526249092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:02:18,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:02:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 37, 37] total 85 [2024-11-28 03:02:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63828100] [2024-11-28 03:02:18,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:02:18,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-28 03:02:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:18,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-28 03:02:18,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=951, Invalid=6359, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:02:18,985 INFO L87 Difference]: Start difference. First operand 513 states and 547 transitions. Second operand has 86 states, 85 states have (on average 2.9058823529411764) internal successors, (247), 66 states have internal predecessors, (247), 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) [2024-11-28 03:02:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:35,566 INFO L93 Difference]: Finished difference Result 3892 states and 4313 transitions. [2024-11-28 03:02:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 435 states. [2024-11-28 03:02:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.9058823529411764) internal successors, (247), 66 states have internal predecessors, (247), 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 515 [2024-11-28 03:02:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:35,582 INFO L225 Difference]: With dead ends: 3892 [2024-11-28 03:02:35,583 INFO L226 Difference]: Without dead ends: 3123 [2024-11-28 03:02:35,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1406 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84146 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=31056, Invalid=158604, Unknown=0, NotChecked=0, Total=189660 [2024-11-28 03:02:35,607 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:35,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 238 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:02:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2024-11-28 03:02:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 1043. [2024-11-28 03:02:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1015 states have (on average 1.0827586206896551) internal successors, (1099), 1015 states have internal predecessors, (1099), 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) [2024-11-28 03:02:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1127 transitions. [2024-11-28 03:02:35,845 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1127 transitions. Word has length 515 [2024-11-28 03:02:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:35,848 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1127 transitions. [2024-11-28 03:02:35,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.9058823529411764) internal successors, (247), 66 states have internal predecessors, (247), 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) [2024-11-28 03:02:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1127 transitions. [2024-11-28 03:02:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2024-11-28 03:02:35,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:35,862 INFO L218 NwaCegarLoop]: trace histogram [205, 205, 205, 205, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:02:35,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:02:36,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:36,062 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:02:36,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash -503062409, now seen corresponding path program 13 times [2024-11-28 03:02:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323583622] [2024-11-28 03:02:36,063 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:02:36,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 91644 backedges. 46050 proven. 558 refuted. 0 times theorem prover too weak. 45036 trivial. 0 not checked. [2024-11-28 03:02:40,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323583622] [2024-11-28 03:02:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323583622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:02:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500350604] [2024-11-28 03:02:40,874 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:02:40,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:02:40,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:02:40,876 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:02:40,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:02:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:41,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 03:02:41,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:02:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 91644 backedges. 40016 proven. 1918 refuted. 0 times theorem prover too weak. 49710 trivial. 0 not checked. [2024-11-28 03:02:43,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:29,707 INFO L134 CoverageAnalysis]: Checked inductivity of 91644 backedges. 40016 proven. 1918 refuted. 0 times theorem prover too weak. 49710 trivial. 0 not checked. [2024-11-28 03:03:29,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500350604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:29,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 53, 53] total 70 [2024-11-28 03:03:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474924376] [2024-11-28 03:03:29,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:29,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-28 03:03:29,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:29,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-28 03:03:29,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=4408, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:03:29,711 INFO L87 Difference]: Start difference. First operand 1043 states and 1127 transitions. Second operand has 70 states, 70 states have (on average 2.6714285714285713) internal successors, (187), 59 states have internal predecessors, (187), 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) [2024-11-28 03:03:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:35,912 INFO L93 Difference]: Finished difference Result 1972 states and 2146 transitions. [2024-11-28 03:03:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-28 03:03:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.6714285714285713) internal successors, (187), 59 states have internal predecessors, (187), 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 1090 [2024-11-28 03:03:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:35,919 INFO L225 Difference]: With dead ends: 1972 [2024-11-28 03:03:35,919 INFO L226 Difference]: Without dead ends: 1101 [2024-11-28 03:03:35,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2336 GetRequests, 2100 SyntacticMatches, 51 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13987 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3457, Invalid=31325, Unknown=0, NotChecked=0, Total=34782 [2024-11-28 03:03:35,926 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 3 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 5225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 5235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:35,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 770 Invalid, 5235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 5225 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:03:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-28 03:03:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1068. [2024-11-28 03:03:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1039 states have (on average 1.041385948026949) internal successors, (1082), 1039 states have internal predecessors, (1082), 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) [2024-11-28 03:03:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1111 transitions. [2024-11-28 03:03:36,176 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1111 transitions. Word has length 1090 [2024-11-28 03:03:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:36,177 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1111 transitions. [2024-11-28 03:03:36,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.6714285714285713) internal successors, (187), 59 states have internal predecessors, (187), 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) [2024-11-28 03:03:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1111 transitions. [2024-11-28 03:03:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2024-11-28 03:03:36,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:36,193 INFO L218 NwaCegarLoop]: trace histogram [208, 208, 208, 208, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:36,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:03:36,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:36,394 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:03:36,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:36,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1045970203, now seen corresponding path program 14 times [2024-11-28 03:03:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662682514] [2024-11-28 03:03:36,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:36,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:37,010 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:03:37,011 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:03:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 94188 backedges. 44591 proven. 808 refuted. 0 times theorem prover too weak. 48789 trivial. 0 not checked. [2024-11-28 03:03:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662682514] [2024-11-28 03:03:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662682514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417884219] [2024-11-28 03:03:41,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:41,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:41,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:41,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:03:42,793 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:03:42,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:03:42,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 03:03:42,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 94188 backedges. 46731 proven. 2566 refuted. 0 times theorem prover too weak. 44891 trivial. 0 not checked. [2024-11-28 03:03:44,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:04:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 94188 backedges. 46731 proven. 2566 refuted. 0 times theorem prover too weak. 44891 trivial. 0 not checked. [2024-11-28 03:04:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417884219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:04:45,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:04:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 58, 58] total 84 [2024-11-28 03:04:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265863679] [2024-11-28 03:04:45,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:04:45,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-28 03:04:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:45,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-28 03:04:45,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=615, Invalid=6357, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 03:04:45,822 INFO L87 Difference]: Start difference. First operand 1068 states and 1111 transitions. Second operand has 84 states, 84 states have (on average 2.619047619047619) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-28 03:04:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:55,158 INFO L93 Difference]: Finished difference Result 2201 states and 2304 transitions. [2024-11-28 03:04:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2024-11-28 03:04:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.619047619047619) internal successors, (220), 71 states have internal predecessors, (220), 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 1102 [2024-11-28 03:04:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:55,169 INFO L225 Difference]: With dead ends: 2201 [2024-11-28 03:04:55,169 INFO L226 Difference]: Without dead ends: 1398 [2024-11-28 03:04:55,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2414 GetRequests, 2113 SyntacticMatches, 56 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24677 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=5952, Invalid=54810, Unknown=0, NotChecked=0, Total=60762 [2024-11-28 03:04:55,177 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 7677 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 7691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 7677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:55,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 846 Invalid, 7691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 7677 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:04:55,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2024-11-28 03:04:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1284. [2024-11-28 03:04:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1250 states have (on average 1.0272) internal successors, (1284), 1250 states have internal predecessors, (1284), 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) [2024-11-28 03:04:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1318 transitions. [2024-11-28 03:04:55,539 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1318 transitions. Word has length 1102 [2024-11-28 03:04:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:55,540 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1318 transitions. [2024-11-28 03:04:55,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.619047619047619) internal successors, (220), 71 states have internal predecessors, (220), 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) [2024-11-28 03:04:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1318 transitions. [2024-11-28 03:04:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1147 [2024-11-28 03:04:55,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:55,557 INFO L218 NwaCegarLoop]: trace histogram [219, 219, 219, 219, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:04:55,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:04:55,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:55,758 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:04:55,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1621109283, now seen corresponding path program 15 times [2024-11-28 03:04:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:55,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922212377] [2024-11-28 03:04:55,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:04:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:55,873 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:04:55,874 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 103824 backedges. 39153 proven. 5334 refuted. 0 times theorem prover too weak. 59337 trivial. 0 not checked. [2024-11-28 03:04:57,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922212377] [2024-11-28 03:04:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922212377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:04:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184278707] [2024-11-28 03:04:57,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:04:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:04:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:04:57,451 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:04:57,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:04:59,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 03:04:59,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:04:59,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:04:59,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:04:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 103824 backedges. 12858 proven. 435 refuted. 0 times theorem prover too weak. 90531 trivial. 0 not checked. [2024-11-28 03:04:59,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 103824 backedges. 12858 proven. 435 refuted. 0 times theorem prover too weak. 90531 trivial. 0 not checked. [2024-11-28 03:05:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184278707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:05:02,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:05:02,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 33, 33] total 74 [2024-11-28 03:05:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138620991] [2024-11-28 03:05:02,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:05:02,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 03:05:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:02,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 03:05:02,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1249, Invalid=4301, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 03:05:02,597 INFO L87 Difference]: Start difference. First operand 1284 states and 1318 transitions. Second operand has 75 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 72 states have internal predecessors, (173), 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) [2024-11-28 03:05:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:06,832 INFO L93 Difference]: Finished difference Result 5016 states and 5438 transitions. [2024-11-28 03:05:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-11-28 03:05:06,833 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 72 states have internal predecessors, (173), 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 1146 [2024-11-28 03:05:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:06,852 INFO L225 Difference]: With dead ends: 5016 [2024-11-28 03:05:06,853 INFO L226 Difference]: Without dead ends: 4949 [2024-11-28 03:05:06,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2413 GetRequests, 2253 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5295 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=6454, Invalid=19628, Unknown=0, NotChecked=0, Total=26082 [2024-11-28 03:05:06,861 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:06,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 213 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:05:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2024-11-28 03:05:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 1416. [2024-11-28 03:05:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1382 states have (on average 1.036903039073806) internal successors, (1433), 1382 states have internal predecessors, (1433), 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) [2024-11-28 03:05:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1467 transitions. [2024-11-28 03:05:07,304 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1467 transitions. Word has length 1146 [2024-11-28 03:05:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:07,306 INFO L471 AbstractCegarLoop]: Abstraction has 1416 states and 1467 transitions. [2024-11-28 03:05:07,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.3378378378378377) internal successors, (173), 72 states have internal predecessors, (173), 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) [2024-11-28 03:05:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1467 transitions. [2024-11-28 03:05:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2024-11-28 03:05:07,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:07,324 INFO L218 NwaCegarLoop]: trace histogram [236, 236, 236, 236, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:07,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:05:07,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:07,524 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:05:07,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2003690301, now seen corresponding path program 16 times [2024-11-28 03:05:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544222206] [2024-11-28 03:05:07,526 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:05:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:07,766 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:05:07,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 119668 backedges. 36553 proven. 2344 refuted. 0 times theorem prover too weak. 80771 trivial. 0 not checked. [2024-11-28 03:05:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544222206] [2024-11-28 03:05:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544222206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947425893] [2024-11-28 03:05:10,984 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:05:10,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:10,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:10,986 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:10,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:05:13,100 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:05:13,101 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:13,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 2218 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 03:05:13,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 119668 backedges. 26407 proven. 1891 refuted. 0 times theorem prover too weak. 91370 trivial. 0 not checked. [2024-11-28 03:05:14,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 119668 backedges. 26407 proven. 1891 refuted. 0 times theorem prover too weak. 91370 trivial. 0 not checked. [2024-11-28 03:05:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947425893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:05:21,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:05:21,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 65, 65] total 133 [2024-11-28 03:05:21,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370347255] [2024-11-28 03:05:21,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:05:21,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-28 03:05:21,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:21,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-28 03:05:21,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4430, Invalid=13392, Unknown=0, NotChecked=0, Total=17822 [2024-11-28 03:05:21,595 INFO L87 Difference]: Start difference. First operand 1416 states and 1467 transitions. Second operand has 134 states, 133 states have (on average 2.142857142857143) internal successors, (285), 133 states have internal predecessors, (285), 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) [2024-11-28 03:05:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:25,423 INFO L93 Difference]: Finished difference Result 5988 states and 6912 transitions. [2024-11-28 03:05:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2024-11-28 03:05:25,423 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 133 states have (on average 2.142857142857143) internal successors, (285), 133 states have internal predecessors, (285), 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 1214 [2024-11-28 03:05:25,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:25,444 INFO L225 Difference]: With dead ends: 5988 [2024-11-28 03:05:25,445 INFO L226 Difference]: Without dead ends: 5855 [2024-11-28 03:05:25,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2495 GetRequests, 2330 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5571 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=7714, Invalid=20008, Unknown=0, NotChecked=0, Total=27722 [2024-11-28 03:05:25,454 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:25,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 149 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:05:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2024-11-28 03:05:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 1676. [2024-11-28 03:05:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1642 states have (on average 1.05115712545676) internal successors, (1726), 1642 states have internal predecessors, (1726), 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) [2024-11-28 03:05:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 1760 transitions. [2024-11-28 03:05:25,951 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 1760 transitions. Word has length 1214 [2024-11-28 03:05:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:25,952 INFO L471 AbstractCegarLoop]: Abstraction has 1676 states and 1760 transitions. [2024-11-28 03:05:25,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 133 states have (on average 2.142857142857143) internal successors, (285), 133 states have internal predecessors, (285), 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) [2024-11-28 03:05:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 1760 transitions. [2024-11-28 03:05:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2024-11-28 03:05:25,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:25,974 INFO L218 NwaCegarLoop]: trace histogram [269, 269, 269, 269, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:25,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 03:05:26,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:05:26,178 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:05:26,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 163568887, now seen corresponding path program 17 times [2024-11-28 03:05:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:26,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755316237] [2024-11-28 03:05:26,179 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:05:26,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:26,342 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2024-11-28 03:05:26,343 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 153724 backedges. 77335 proven. 1973 refuted. 0 times theorem prover too weak. 74416 trivial. 0 not checked. [2024-11-28 03:05:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755316237] [2024-11-28 03:05:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755316237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980445507] [2024-11-28 03:05:30,282 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:05:30,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:30,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:30,284 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:30,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:05:32,318 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2024-11-28 03:05:32,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:05:32,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 03:05:32,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 153724 backedges. 79644 proven. 4070 refuted. 0 times theorem prover too weak. 70010 trivial. 0 not checked. [2024-11-28 03:05:33,216 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 153724 backedges. 80923 proven. 2791 refuted. 0 times theorem prover too weak. 70010 trivial. 0 not checked. [2024-11-28 03:06:02,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980445507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:06:02,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:06:02,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 57, 57] total 78 [2024-11-28 03:06:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922195491] [2024-11-28 03:06:02,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:06:02,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-28 03:06:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:02,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-28 03:06:02,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=5346, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 03:06:02,941 INFO L87 Difference]: Start difference. First operand 1676 states and 1760 transitions. Second operand has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 73 states have internal predecessors, (193), 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) [2024-11-28 03:06:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:08,478 INFO L93 Difference]: Finished difference Result 3198 states and 3369 transitions. [2024-11-28 03:06:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-28 03:06:08,479 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 73 states have internal predecessors, (193), 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 1346 [2024-11-28 03:06:08,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:08,486 INFO L225 Difference]: With dead ends: 3198 [2024-11-28 03:06:08,487 INFO L226 Difference]: Without dead ends: 2001 [2024-11-28 03:06:08,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2863 GetRequests, 2628 SyntacticMatches, 40 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12729 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5285, Invalid=33327, Unknown=0, NotChecked=0, Total=38612 [2024-11-28 03:06:08,494 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3500 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:08,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 447 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3500 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:06:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2024-11-28 03:06:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1866. [2024-11-28 03:06:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1829 states have (on average 1.0453799890650628) internal successors, (1912), 1829 states have internal predecessors, (1912), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 34 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 03:06:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 1949 transitions. [2024-11-28 03:06:09,078 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 1949 transitions. Word has length 1346 [2024-11-28 03:06:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:09,079 INFO L471 AbstractCegarLoop]: Abstraction has 1866 states and 1949 transitions. [2024-11-28 03:06:09,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.4743589743589745) internal successors, (193), 73 states have internal predecessors, (193), 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) [2024-11-28 03:06:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 1949 transitions. [2024-11-28 03:06:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1385 [2024-11-28 03:06:09,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:09,102 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] [2024-11-28 03:06:09,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:06:09,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:06:09,302 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:06:09,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1496408973, now seen corresponding path program 18 times [2024-11-28 03:06:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:09,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627895728] [2024-11-28 03:06:09,304 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:06:09,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:09,466 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-28 03:06:09,467 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 75577 proven. 14333 refuted. 0 times theorem prover too weak. 71847 trivial. 0 not checked. [2024-11-28 03:06:11,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627895728] [2024-11-28 03:06:11,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627895728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:11,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705729836] [2024-11-28 03:06:11,572 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:06:11,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:11,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:11,574 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:11,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:06:13,843 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2024-11-28 03:06:13,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:13,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:06:13,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 75577 proven. 14333 refuted. 0 times theorem prover too weak. 71847 trivial. 0 not checked. [2024-11-28 03:06:14,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 161757 backedges. 75577 proven. 14333 refuted. 0 times theorem prover too weak. 71847 trivial. 0 not checked. [2024-11-28 03:06:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705729836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:06:22,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:06:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 75 [2024-11-28 03:06:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770978775] [2024-11-28 03:06:22,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:06:22,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-28 03:06:22,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:22,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-28 03:06:22,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1045, Invalid=4655, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 03:06:22,025 INFO L87 Difference]: Start difference. First operand 1866 states and 1949 transitions. Second operand has 76 states, 75 states have (on average 2.44) internal successors, (183), 70 states have internal predecessors, (183), 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) [2024-11-28 03:06:36,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:36,707 INFO L93 Difference]: Finished difference Result 10821 states and 11837 transitions. [2024-11-28 03:06:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2024-11-28 03:06:36,708 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.44) internal successors, (183), 70 states have internal predecessors, (183), 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 1384 [2024-11-28 03:06:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:36,742 INFO L225 Difference]: With dead ends: 10821 [2024-11-28 03:06:36,742 INFO L226 Difference]: Without dead ends: 9796 [2024-11-28 03:06:36,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3044 GetRequests, 2730 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40436 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=21115, Invalid=78425, Unknown=0, NotChecked=0, Total=99540 [2024-11-28 03:06:36,756 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:36,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 185 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:06:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9796 states. [2024-11-28 03:06:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9796 to 2026. [2024-11-28 03:06:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1989 states have (on average 1.06184012066365) internal successors, (2112), 1989 states have internal predecessors, (2112), 3 states have call successors, (3), 2 states have call predecessors, (3), 33 states have return successors, (34), 34 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-28 03:06:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2149 transitions. [2024-11-28 03:06:37,523 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2149 transitions. Word has length 1384 [2024-11-28 03:06:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:37,525 INFO L471 AbstractCegarLoop]: Abstraction has 2026 states and 2149 transitions. [2024-11-28 03:06:37,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.44) internal successors, (183), 70 states have internal predecessors, (183), 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) [2024-11-28 03:06:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2149 transitions. [2024-11-28 03:06:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1545 [2024-11-28 03:06:37,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:37,551 INFO L218 NwaCegarLoop]: trace histogram [316, 316, 316, 316, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:37,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:06:37,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:06:37,752 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:06:37,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1621827229, now seen corresponding path program 19 times [2024-11-28 03:06:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:37,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851979088] [2024-11-28 03:06:37,753 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:06:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 209997 backedges. 120483 proven. 1285 refuted. 0 times theorem prover too weak. 88229 trivial. 0 not checked. [2024-11-28 03:06:46,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851979088] [2024-11-28 03:06:46,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851979088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702081556] [2024-11-28 03:06:46,958 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:06:46,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:46,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:46,960 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:46,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:06:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:49,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-28 03:06:49,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 209997 backedges. 109823 proven. 5344 refuted. 0 times theorem prover too weak. 94830 trivial. 0 not checked. [2024-11-28 03:06:52,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 209997 backedges. 109823 proven. 5344 refuted. 0 times theorem prover too weak. 94830 trivial. 0 not checked. [2024-11-28 03:08:21,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702081556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:21,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:21,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 73, 73] total 105 [2024-11-28 03:08:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688726937] [2024-11-28 03:08:21,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:21,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 03:08:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:21,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 03:08:21,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=924, Invalid=9996, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 03:08:21,680 INFO L87 Difference]: Start difference. First operand 2026 states and 2149 transitions. Second operand has 105 states, 105 states have (on average 2.580952380952381) internal successors, (271), 89 states have internal predecessors, (271), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 03:08:36,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:36,236 INFO L93 Difference]: Finished difference Result 4912 states and 5198 transitions. [2024-11-28 03:08:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 301 states. [2024-11-28 03:08:36,237 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.580952380952381) internal successors, (271), 89 states have internal predecessors, (271), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) Word has length 1544 [2024-11-28 03:08:36,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:36,250 INFO L225 Difference]: With dead ends: 4912 [2024-11-28 03:08:36,250 INFO L226 Difference]: Without dead ends: 3461 [2024-11-28 03:08:36,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3397 GetRequests, 2973 SyntacticMatches, 71 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50550 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=11944, Invalid=113726, Unknown=0, NotChecked=0, Total=125670 [2024-11-28 03:08:36,259 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 10253 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 10273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 10253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:36,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 709 Invalid, 10273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 10253 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 03:08:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2024-11-28 03:08:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 2639. [2024-11-28 03:08:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2590 states have (on average 1.047876447876448) internal successors, (2714), 2590 states have internal predecessors, (2714), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2024-11-28 03:08:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 2763 transitions. [2024-11-28 03:08:37,492 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 2763 transitions. Word has length 1544 [2024-11-28 03:08:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:37,493 INFO L471 AbstractCegarLoop]: Abstraction has 2639 states and 2763 transitions. [2024-11-28 03:08:37,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 2.580952380952381) internal successors, (271), 89 states have internal predecessors, (271), 1 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (18), 18 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-28 03:08:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 2763 transitions. [2024-11-28 03:08:37,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1577 [2024-11-28 03:08:37,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:37,510 INFO L218 NwaCegarLoop]: trace histogram [324, 324, 324, 324, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:37,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:08:37,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:08:37,711 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:08:37,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1690055789, now seen corresponding path program 20 times [2024-11-28 03:08:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:37,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997401148] [2024-11-28 03:08:37,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:37,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:38,461 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:38,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 220413 backedges. 127084 proven. 1476 refuted. 0 times theorem prover too weak. 91853 trivial. 0 not checked. [2024-11-28 03:08:47,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:47,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997401148] [2024-11-28 03:08:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997401148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047913592] [2024-11-28 03:08:47,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:47,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:47,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:08:51,205 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:51,205 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:51,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-28 03:08:51,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 220413 backedges. 135838 proven. 8011 refuted. 0 times theorem prover too weak. 76564 trivial. 0 not checked. [2024-11-28 03:08:54,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:10:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 220413 backedges. 135838 proven. 8011 refuted. 0 times theorem prover too weak. 76564 trivial. 0 not checked. [2024-11-28 03:10:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047913592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:10:39,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:10:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 112 [2024-11-28 03:10:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344808456] [2024-11-28 03:10:39,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:10:39,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-28 03:10:39,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:10:39,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-28 03:10:39,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1007, Invalid=11425, Unknown=0, NotChecked=0, Total=12432 [2024-11-28 03:10:39,644 INFO L87 Difference]: Start difference. First operand 2639 states and 2763 transitions. Second operand has 112 states, 112 states have (on average 2.580357142857143) internal successors, (289), 95 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 03:11:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:01,150 INFO L93 Difference]: Finished difference Result 4982 states and 5224 transitions. [2024-11-28 03:11:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 337 states. [2024-11-28 03:11:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.580357142857143) internal successors, (289), 95 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1576 [2024-11-28 03:11:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:01,162 INFO L225 Difference]: With dead ends: 4982 [2024-11-28 03:11:01,162 INFO L226 Difference]: Without dead ends: 3463 [2024-11-28 03:11:01,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3500 GetRequests, 3024 SyntacticMatches, 81 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62570 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=14713, Invalid=142499, Unknown=0, NotChecked=0, Total=157212 [2024-11-28 03:11:01,173 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 14896 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 14918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 14896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:01,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1075 Invalid, 14918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 14896 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-28 03:11:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2024-11-28 03:11:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3064. [2024-11-28 03:11:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3008 states have (on average 1.0422207446808511) internal successors, (3135), 3008 states have internal predecessors, (3135), 3 states have call successors, (3), 2 states have call predecessors, (3), 52 states have return successors, (53), 53 states have call predecessors, (53), 2 states have call successors, (53) [2024-11-28 03:11:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 3191 transitions. [2024-11-28 03:11:02,622 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 3191 transitions. Word has length 1576 [2024-11-28 03:11:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:02,623 INFO L471 AbstractCegarLoop]: Abstraction has 3064 states and 3191 transitions. [2024-11-28 03:11:02,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.580357142857143) internal successors, (289), 95 states have internal predecessors, (289), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 03:11:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 3191 transitions. [2024-11-28 03:11:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1593 [2024-11-28 03:11:02,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:02,642 INFO L218 NwaCegarLoop]: trace histogram [328, 328, 328, 328, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:02,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:02,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:11:02,842 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:11:02,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:02,843 INFO L85 PathProgramCache]: Analyzing trace with hash -963329451, now seen corresponding path program 21 times [2024-11-28 03:11:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201944658] [2024-11-28 03:11:02,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:11:02,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:03,147 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-28 03:11:03,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:11:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 225717 backedges. 111925 proven. 39560 refuted. 0 times theorem prover too weak. 74232 trivial. 0 not checked. [2024-11-28 03:11:06,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201944658] [2024-11-28 03:11:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201944658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549046361] [2024-11-28 03:11:06,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:11:06,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:06,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:06,897 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:06,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:11:11,032 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-28 03:11:11,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:11:11,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 03:11:11,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 225717 backedges. 111925 proven. 39560 refuted. 0 times theorem prover too weak. 74232 trivial. 0 not checked. [2024-11-28 03:11:11,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:11:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 225717 backedges. 111925 proven. 39560 refuted. 0 times theorem prover too weak. 74232 trivial. 0 not checked. [2024-11-28 03:11:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549046361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:11:24,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:11:24,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2024-11-28 03:11:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412236989] [2024-11-28 03:11:24,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:11:24,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-28 03:11:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:24,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-28 03:11:24,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1541, Invalid=7201, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 03:11:24,466 INFO L87 Difference]: Start difference. First operand 3064 states and 3191 transitions. Second operand has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 86 states have internal predecessors, (225), 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) [2024-11-28 03:11:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:53,300 INFO L93 Difference]: Finished difference Result 15304 states and 16647 transitions. [2024-11-28 03:11:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 485 states. [2024-11-28 03:11:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 86 states have internal predecessors, (225), 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 1592 [2024-11-28 03:11:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:53,338 INFO L225 Difference]: With dead ends: 15304 [2024-11-28 03:11:53,338 INFO L226 Difference]: Without dead ends: 14023 [2024-11-28 03:11:53,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3621 GetRequests, 3137 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104271 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=49577, Invalid=186133, Unknown=0, NotChecked=0, Total=235710 [2024-11-28 03:11:53,366 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:53,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 173 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:11:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14023 states. [2024-11-28 03:11:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14023 to 3281. [2024-11-28 03:11:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3225 states have (on average 1.051782945736434) internal successors, (3392), 3225 states have internal predecessors, (3392), 3 states have call successors, (3), 2 states have call predecessors, (3), 52 states have return successors, (53), 53 states have call predecessors, (53), 2 states have call successors, (53) [2024-11-28 03:11:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 3448 transitions. [2024-11-28 03:11:55,403 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 3448 transitions. Word has length 1592 [2024-11-28 03:11:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:55,404 INFO L471 AbstractCegarLoop]: Abstraction has 3281 states and 3448 transitions. [2024-11-28 03:11:55,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4193548387096775) internal successors, (225), 86 states have internal predecessors, (225), 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) [2024-11-28 03:11:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 3448 transitions. [2024-11-28 03:11:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1753 [2024-11-28 03:11:55,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:55,424 INFO L218 NwaCegarLoop]: trace histogram [368, 368, 368, 368, 27, 26, 26, 26, 26, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1] [2024-11-28 03:11:55,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:11:55,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:11:55,625 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:11:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1462700901, now seen corresponding path program 22 times [2024-11-28 03:11:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:55,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732637640] [2024-11-28 03:11:55,626 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:11:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:56,388 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:11:56,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 282277 backedges. 170392 proven. 2580 refuted. 0 times theorem prover too weak. 109305 trivial. 0 not checked. [2024-11-28 03:12:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732637640] [2024-11-28 03:12:12,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732637640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642178227] [2024-11-28 03:12:12,915 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:12,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:12,917 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:12,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:12:16,987 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:16,987 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:17,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 3160 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 03:12:17,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 282277 backedges. 125185 proven. 28810 refuted. 0 times theorem prover too weak. 128282 trivial. 0 not checked. [2024-11-28 03:12:20,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 282277 backedges. 125185 proven. 28810 refuted. 0 times theorem prover too weak. 128282 trivial. 0 not checked. [2024-11-28 03:13:47,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642178227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:13:47,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:13:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 80, 80] total 146 [2024-11-28 03:13:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016984055] [2024-11-28 03:13:47,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:47,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-28 03:13:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:13:47,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-28 03:13:47,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1811, Invalid=19359, Unknown=0, NotChecked=0, Total=21170 [2024-11-28 03:13:47,882 INFO L87 Difference]: Start difference. First operand 3281 states and 3448 transitions. Second operand has 146 states, 146 states have (on average 2.4178082191780823) internal successors, (353), 129 states have internal predecessors, (353), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 03:14:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:01,144 INFO L93 Difference]: Finished difference Result 4977 states and 5290 transitions. [2024-11-28 03:14:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2024-11-28 03:14:01,144 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.4178082191780823) internal successors, (353), 129 states have internal predecessors, (353), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1752 [2024-11-28 03:14:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:01,151 INFO L225 Difference]: With dead ends: 4977 [2024-11-28 03:14:01,151 INFO L226 Difference]: Without dead ends: 2284 [2024-11-28 03:14:01,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3892 GetRequests, 3380 SyntacticMatches, 77 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84724 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=20202, Invalid=170330, Unknown=0, NotChecked=0, Total=190532 [2024-11-28 03:14:01,160 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:01,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 361 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:14:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2024-11-28 03:14:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2203. [2024-11-28 03:14:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2171 states have (on average 1.064486411791801) internal successors, (2311), 2171 states have internal predecessors, (2311), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2024-11-28 03:14:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2343 transitions. [2024-11-28 03:14:02,364 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2343 transitions. Word has length 1752 [2024-11-28 03:14:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:02,365 INFO L471 AbstractCegarLoop]: Abstraction has 2203 states and 2343 transitions. [2024-11-28 03:14:02,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.4178082191780823) internal successors, (353), 129 states have internal predecessors, (353), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-28 03:14:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2343 transitions. [2024-11-28 03:14:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1828 [2024-11-28 03:14:02,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:02,382 INFO L218 NwaCegarLoop]: trace histogram [384, 384, 384, 384, 28, 27, 27, 27, 27, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:02,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:14:02,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb173091-4ba5-4a37-87b8-ebc9e0042e7d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:02,582 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:14:02,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1989252048, now seen corresponding path program 23 times [2024-11-28 03:14:02,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:02,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221494326] [2024-11-28 03:14:02,583 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:14:02,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:03,031 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2024-11-28 03:14:03,031 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat