./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.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_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/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_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/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_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/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 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:35:50,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:35:50,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-27 23:35:50,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:35:50,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:35:50,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:35:50,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:35:50,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:35:50,895 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:35:50,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:35:50,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:35:50,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:35:50,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:35:50,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:35:50,898 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:35:50,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:35:50,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:35:50,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:35:50,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:35:50,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:35:50,901 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:50,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:50,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:35:50,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:35:50,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:35:50,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:50,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:35:50,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:35:50,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:35:50,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:35:50,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:35:50,904 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_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/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 -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2024-11-27 23:35:51,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:35:51,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:35:51,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:35:51,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:35:51,231 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:35:51,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2024-11-27 23:35:54,121 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/data/77fd0fabf/ba8421dfac694d458195e11224bdda2a/FLAGa0d34aafc [2024-11-27 23:35:54,418 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:35:54,420 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2024-11-27 23:35:54,430 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/data/77fd0fabf/ba8421dfac694d458195e11224bdda2a/FLAGa0d34aafc [2024-11-27 23:35:54,455 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/data/77fd0fabf/ba8421dfac694d458195e11224bdda2a [2024-11-27 23:35:54,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:35:54,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:35:54,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:54,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:35:54,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:35:54,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1acce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54, skipping insertion in model container [2024-11-27 23:35:54,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:35:54,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:54,660 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:35:54,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:35:54,690 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:35:54,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54 WrapperNode [2024-11-27 23:35:54,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:35:54,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:54,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:35:54,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:35:54,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,723 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2024-11-27 23:35:54,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:35:54,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:35:54,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:35:54,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:35:54,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,745 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 23:35:54,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,748 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:35:54,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:35:54,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:35:54,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:35:54,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (1/1) ... [2024-11-27 23:35:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:35:54,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:54,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:35:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:35:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-27 23:35:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-27 23:35:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-27 23:35:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-27 23:35:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:35:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:35:54,889 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:35:54,892 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:35:55,053 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-27 23:35:55,053 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:35:55,064 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:35:55,065 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:35:55,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:55 BoogieIcfgContainer [2024-11-27 23:35:55,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:35:55,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:35:55,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:35:55,075 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:35:55,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:35:54" (1/3) ... [2024-11-27 23:35:55,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4215b1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:55, skipping insertion in model container [2024-11-27 23:35:55,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:35:54" (2/3) ... [2024-11-27 23:35:55,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4215b1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:35:55, skipping insertion in model container [2024-11-27 23:35:55,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:55" (3/3) ... [2024-11-27 23:35:55,079 INFO L128 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2024-11-27 23:35:55,096 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:35:55,098 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG MutualRecursion_1a.c that has 3 procedures, 43 locations, 1 initial locations, 0 loop locations, and 10 error locations. [2024-11-27 23:35:55,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:35:55,186 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;@7aafe0e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:35:55,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-27 23:35:55,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 23:35:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-27 23:35:55,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:55,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:35:55,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:55,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2073143902, now seen corresponding path program 1 times [2024-11-27 23:35:55,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:55,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535598729] [2024-11-27 23:35:55,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:55,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535598729] [2024-11-27 23:35:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535598729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:55,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:55,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:35:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912196356] [2024-11-27 23:35:55,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:55,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:55,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:55,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:55,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:55,406 INFO L87 Difference]: Start difference. First operand has 43 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:55,455 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2024-11-27 23:35:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:55,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-11-27 23:35:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:55,469 INFO L225 Difference]: With dead ends: 45 [2024-11-27 23:35:55,469 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 23:35:55,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:55,475 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 11 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:55,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 74 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 23:35:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-11-27 23:35:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 23:35:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-27 23:35:55,529 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 6 [2024-11-27 23:35:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:55,530 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-27 23:35:55,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-27 23:35:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-27 23:35:55,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:55,532 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:55,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:35:55,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:55,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:55,533 INFO L85 PathProgramCache]: Analyzing trace with hash -157048422, now seen corresponding path program 1 times [2024-11-27 23:35:55,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:55,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235912564] [2024-11-27 23:35:55,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:55,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235912564] [2024-11-27 23:35:55,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235912564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:55,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122790619] [2024-11-27 23:35:55,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:55,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:55,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:55,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:55,649 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:55,745 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2024-11-27 23:35:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-27 23:35:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:55,750 INFO L225 Difference]: With dead ends: 57 [2024-11-27 23:35:55,750 INFO L226 Difference]: Without dead ends: 51 [2024-11-27 23:35:55,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:35:55,751 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:55,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 138 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-27 23:35:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-27 23:35:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.34375) internal successors, (43), 39 states have internal predecessors, (43), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-27 23:35:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-27 23:35:55,765 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 7 [2024-11-27 23:35:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:55,765 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-27 23:35:55,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-27 23:35:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 23:35:55,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:55,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:55,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:35:55,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:55,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1776336168, now seen corresponding path program 1 times [2024-11-27 23:35:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:55,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894473388] [2024-11-27 23:35:55,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:35:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894473388] [2024-11-27 23:35:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894473388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:55,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:35:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931053348] [2024-11-27 23:35:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:35:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:55,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:35:55,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:35:55,971 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:56,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:56,280 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2024-11-27 23:35:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:35:56,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-27 23:35:56,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:56,281 INFO L225 Difference]: With dead ends: 71 [2024-11-27 23:35:56,282 INFO L226 Difference]: Without dead ends: 68 [2024-11-27 23:35:56,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:35:56,283 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:56,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 179 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:35:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-27 23:35:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-27 23:35:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.255813953488372) internal successors, (54), 47 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 23:35:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2024-11-27 23:35:56,295 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 15 [2024-11-27 23:35:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:56,296 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2024-11-27 23:35:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2024-11-27 23:35:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 23:35:56,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:56,297 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:56,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:35:56,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:56,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1957494335, now seen corresponding path program 1 times [2024-11-27 23:35:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:56,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889216895] [2024-11-27 23:35:56,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:35:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:56,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889216895] [2024-11-27 23:35:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889216895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:56,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:35:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068299735] [2024-11-27 23:35:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:56,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:35:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:56,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:35:56,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:56,361 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:35:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:56,380 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2024-11-27 23:35:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:35:56,380 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-27 23:35:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:56,383 INFO L225 Difference]: With dead ends: 62 [2024-11-27 23:35:56,383 INFO L226 Difference]: Without dead ends: 61 [2024-11-27 23:35:56,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:35:56,385 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:56,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-27 23:35:56,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2024-11-27 23:35:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 23:35:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-11-27 23:35:56,398 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 17 [2024-11-27 23:35:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:56,399 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-11-27 23:35:56,399 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:35:56,399 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-11-27 23:35:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-27 23:35:56,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:56,400 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:56,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:35:56,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:56,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2114816930, now seen corresponding path program 1 times [2024-11-27 23:35:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:56,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194432494] [2024-11-27 23:35:56,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194432494] [2024-11-27 23:35:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194432494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:56,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:56,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908841616] [2024-11-27 23:35:56,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:56,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:56,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:56,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:56,491 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:56,548 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2024-11-27 23:35:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:56,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-27 23:35:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:56,550 INFO L225 Difference]: With dead ends: 92 [2024-11-27 23:35:56,550 INFO L226 Difference]: Without dead ends: 91 [2024-11-27 23:35:56,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:35:56,551 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:56,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 131 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-27 23:35:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2024-11-27 23:35:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-27 23:35:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2024-11-27 23:35:56,565 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 22 [2024-11-27 23:35:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:56,565 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2024-11-27 23:35:56,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2024-11-27 23:35:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:35:56,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:56,566 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:56,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:35:56,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:56,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1134815458, now seen corresponding path program 1 times [2024-11-27 23:35:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049180799] [2024-11-27 23:35:56,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:56,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:56,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049180799] [2024-11-27 23:35:56,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049180799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:56,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:35:56,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:35:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774994075] [2024-11-27 23:35:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:56,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:56,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:56,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:56,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:56,698 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:56,766 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2024-11-27 23:35:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:56,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-27 23:35:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:56,769 INFO L225 Difference]: With dead ends: 92 [2024-11-27 23:35:56,769 INFO L226 Difference]: Without dead ends: 88 [2024-11-27 23:35:56,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:35:56,770 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:56,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 131 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:35:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-27 23:35:56,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2024-11-27 23:35:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-27 23:35:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2024-11-27 23:35:56,789 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 23 [2024-11-27 23:35:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:56,791 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2024-11-27 23:35:56,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2024-11-27 23:35:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-27 23:35:56,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:56,792 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:56,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:35:56,793 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:56,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1403840678, now seen corresponding path program 1 times [2024-11-27 23:35:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097264326] [2024-11-27 23:35:56,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:56,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097264326] [2024-11-27 23:35:56,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097264326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183736165] [2024-11-27 23:35:56,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:56,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:56,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:35:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:56,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:35:56,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:35:56,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:35:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183736165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:35:56,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:35:56,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-27 23:35:56,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893844668] [2024-11-27 23:35:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:35:56,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:35:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:56,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:35:56,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:56,988 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:57,058 INFO L93 Difference]: Finished difference Result 150 states and 200 transitions. [2024-11-27 23:35:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:35:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-27 23:35:57,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:57,061 INFO L225 Difference]: With dead ends: 150 [2024-11-27 23:35:57,061 INFO L226 Difference]: Without dead ends: 79 [2024-11-27 23:35:57,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:35:57,062 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:57,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:57,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-27 23:35:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-27 23:35:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 61 states have internal predecessors, (67), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-27 23:35:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2024-11-27 23:35:57,095 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 25 [2024-11-27 23:35:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:57,099 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2024-11-27 23:35:57,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 23:35:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2024-11-27 23:35:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 23:35:57,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:35:57,101 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:57,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:35:57,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 23:35:57,301 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-27 23:35:57,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash -832072208, now seen corresponding path program 1 times [2024-11-27 23:35:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:57,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366820279] [2024-11-27 23:35:57,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:57,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:35:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366820279] [2024-11-27 23:35:57,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366820279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675440436] [2024-11-27 23:35:57,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:35:57,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:57,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:57,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:35:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:35:57,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 23:35:57,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:35:57,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 23:35:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675440436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:57,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-27 23:35:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918033987] [2024-11-27 23:35:57,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:57,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:35:57,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:57,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:35:57,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:35:57,919 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:35:58,020 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2024-11-27 23:35:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:35:58,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 61 [2024-11-27 23:35:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:35:58,022 INFO L225 Difference]: With dead ends: 116 [2024-11-27 23:35:58,022 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:35:58,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 116 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:35:58,024 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:35:58,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 86 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:35:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:35:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:35:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:35:58,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2024-11-27 23:35:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:35:58,029 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:35:58,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (8), 1 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-27 23:35:58,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:35:58,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:35:58,032 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-11-27 23:35:58,035 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-27 23:35:58,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-27 23:35:58,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-27 23:35:58,036 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2024-11-27 23:35:58,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2024-11-27 23:35:58,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-27 23:35:58,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-27 23:35:58,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-27 23:35:58,037 INFO L782 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-27 23:35:58,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:35:58,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:58,243 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:35:58,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 23:35:58,479 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:35:58,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:35:58 BoogieIcfgContainer [2024-11-27 23:35:58,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:35:58,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:35:58,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:35:58,486 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:35:58,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:35:55" (3/4) ... [2024-11-27 23:35:58,488 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:35:58,493 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2024-11-27 23:35:58,493 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2024-11-27 23:35:58,497 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-27 23:35:58,497 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 23:35:58,497 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-27 23:35:58,566 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:35:58,566 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:35:58,566 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:35:58,568 INFO L158 Benchmark]: Toolchain (without parser) took 4107.27ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 86.4MB in the end (delta: 7.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2024-11-27 23:35:58,568 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 104.2MB in the end (delta: 216.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:35:58,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.61ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 83.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:35:58,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.88ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 82.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:35:58,570 INFO L158 Benchmark]: Boogie Preprocessor took 32.44ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 81.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:35:58,571 INFO L158 Benchmark]: RCFGBuilder took 308.45ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 70.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:35:58,571 INFO L158 Benchmark]: TraceAbstraction took 3416.60ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 91.0MB in the end (delta: -20.6MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2024-11-27 23:35:58,572 INFO L158 Benchmark]: Witness Printer took 80.83ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 86.4MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:35:58,573 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory was 104.4MB in the beginning and 104.2MB in the end (delta: 216.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.61ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 83.7MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.88ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 82.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.44ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 81.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 308.45ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 70.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3416.60ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 91.0MB in the end (delta: -20.6MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Witness Printer took 80.83ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 86.4MB in the end (delta: 4.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 893 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 628 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 265 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=5, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 35 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 1 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 186/198 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 23:35:58,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_342f01d0-d3ce-4d8e-899e-a29eb9f97b94/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE