./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.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_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/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_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/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_d15ec038-8b5c-4e1f-99aa-470112fd757d/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 fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:50:12,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:50:12,913 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-28 02:50:12,918 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:50:12,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:50:12,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:50:12,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:50:12,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:50:12,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:50:12,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:50:12,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:50:12,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:50:12,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:50:12,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:50:12,947 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:50:12,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:50:12,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:50:12,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:50:12,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:50:12,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:50:12,948 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:50:12,949 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:50:12,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:50:12,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:50:12,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:50:12,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:50:12,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:50:12,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:50:12,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:50:12,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:50:12,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:50:12,951 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_d15ec038-8b5c-4e1f-99aa-470112fd757d/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 -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2024-11-28 02:50:13,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:50:13,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:50:13,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:50:13,261 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:50:13,262 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:50:13,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2024-11-28 02:50:16,342 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b9f122f/590153b06ad645ba962eee007df3ac51/FLAGef4803d5b [2024-11-28 02:50:16,618 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:50:16,623 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2024-11-28 02:50:16,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b9f122f/590153b06ad645ba962eee007df3ac51/FLAGef4803d5b [2024-11-28 02:50:16,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/data/90b9f122f/590153b06ad645ba962eee007df3ac51 [2024-11-28 02:50:16,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:50:16,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:50:16,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:50:16,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:50:16,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:50:16,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:16" (1/1) ... [2024-11-28 02:50:16,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62767ee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:16, skipping insertion in model container [2024-11-28 02:50:16,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:50:16" (1/1) ... [2024-11-28 02:50:16,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:50:17,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:50:17,126 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:50:17,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:50:17,151 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:50:17,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17 WrapperNode [2024-11-28 02:50:17,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:50:17,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:50:17,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:50:17,154 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:50:17,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,192 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2024-11-28 02:50:17,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:50:17,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:50:17,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:50:17,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:50:17,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,214 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 02:50:17,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:50:17,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:50:17,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:50:17,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:50:17,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (1/1) ... [2024-11-28 02:50:17,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:50:17,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:17,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:50:17,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:50:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:50:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:50:17,369 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:50:17,371 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:50:17,533 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-28 02:50:17,534 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:50:17,545 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:50:17,546 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:50:17,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:17 BoogieIcfgContainer [2024-11-28 02:50:17,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:50:17,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:50:17,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:50:17,557 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:50:17,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:50:16" (1/3) ... [2024-11-28 02:50:17,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc56fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:17, skipping insertion in model container [2024-11-28 02:50:17,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:50:17" (2/3) ... [2024-11-28 02:50:17,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cc56fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:50:17, skipping insertion in model container [2024-11-28 02:50:17,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:50:17" (3/3) ... [2024-11-28 02:50:17,560 INFO L128 eAbstractionObserver]: Analyzing ICFG Collatz_bounded.c [2024-11-28 02:50:17,573 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:50:17,574 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Collatz_bounded.c that has 1 procedures, 21 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2024-11-28 02:50:17,636 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:50:17,649 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;@104bd5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:50:17,649 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:50:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-11-28 02:50:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:50:17,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:17,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:50:17,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:17,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:17,665 INFO L85 PathProgramCache]: Analyzing trace with hash 889572362, now seen corresponding path program 1 times [2024-11-28 02:50:17,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896061902] [2024-11-28 02:50:17,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:17,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896061902] [2024-11-28 02:50:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896061902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:17,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:17,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:50:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256055054] [2024-11-28 02:50:17,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:17,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:50:17,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:17,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:50:17,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:50:17,992 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-28 02:50:18,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:18,068 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-28 02:50:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:50:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-11-28 02:50:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:18,076 INFO L225 Difference]: With dead ends: 26 [2024-11-28 02:50:18,076 INFO L226 Difference]: Without dead ends: 15 [2024-11-28 02:50:18,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:50:18,083 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:18,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-28 02:50:18,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-28 02:50:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2024-11-28 02:50:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-28 02:50:18,117 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2024-11-28 02:50:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:18,117 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-28 02:50:18,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-28 02:50:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-28 02:50:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:50:18,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:18,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:18,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:50:18,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:18,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1806939499, now seen corresponding path program 1 times [2024-11-28 02:50:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:18,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432487937] [2024-11-28 02:50:18,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:18,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432487937] [2024-11-28 02:50:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432487937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:18,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:18,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:50:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806049076] [2024-11-28 02:50:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:18,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:50:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:18,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:50:18,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:50:18,399 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-28 02:50:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:18,540 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-28 02:50:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:50:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) Word has length 7 [2024-11-28 02:50:18,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:18,541 INFO L225 Difference]: With dead ends: 26 [2024-11-28 02:50:18,541 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 02:50:18,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:18,543 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:18,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 02:50:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-28 02:50:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 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) [2024-11-28 02:50:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-28 02:50:18,549 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2024-11-28 02:50:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:18,549 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-28 02:50:18,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-11-28 02:50:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-28 02:50:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 02:50:18,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:18,550 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:18,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:50:18,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:18,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:18,551 INFO L85 PathProgramCache]: Analyzing trace with hash 259880155, now seen corresponding path program 1 times [2024-11-28 02:50:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:18,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432524105] [2024-11-28 02:50:18,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:18,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432524105] [2024-11-28 02:50:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432524105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263789718] [2024-11-28 02:50:18,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:18,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:18,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:18,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:18,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:50:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:18,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:50:18,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:18,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263789718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:19,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 3] total 7 [2024-11-28 02:50:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062745139] [2024-11-28 02:50:19,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:19,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:50:19,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:19,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:50:19,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:50:19,079 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2024-11-28 02:50:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:19,244 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2024-11-28 02:50:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:50:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) Word has length 13 [2024-11-28 02:50:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:19,246 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:50:19,246 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 02:50:19,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:50:19,249 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:19,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 02:50:19,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2024-11-28 02:50:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 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) [2024-11-28 02:50:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-28 02:50:19,262 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 13 [2024-11-28 02:50:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:19,262 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-28 02:50:19,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2024-11-28 02:50:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-28 02:50:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 02:50:19,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:19,264 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 02:50:19,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:50:19,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:19,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:19,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:19,466 INFO L85 PathProgramCache]: Analyzing trace with hash -478808175, now seen corresponding path program 1 times [2024-11-28 02:50:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:19,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549366194] [2024-11-28 02:50:19,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:19,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549366194] [2024-11-28 02:50:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549366194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503433026] [2024-11-28 02:50:19,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:19,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:19,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:19,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:19,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:50:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:19,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:50:19,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:19,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:19,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503433026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:19,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:50:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712791823] [2024-11-28 02:50:19,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:19,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:50:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:19,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:50:19,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:50:19,705 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2024-11-28 02:50:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:19,877 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-11-28 02:50:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:50:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) Word has length 19 [2024-11-28 02:50:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:19,879 INFO L225 Difference]: With dead ends: 60 [2024-11-28 02:50:19,879 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 02:50:19,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:50:19,880 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:19,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 6 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 02:50:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-28 02:50:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 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) [2024-11-28 02:50:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2024-11-28 02:50:19,889 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 19 [2024-11-28 02:50:19,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:19,889 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2024-11-28 02:50:19,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2024-11-28 02:50:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2024-11-28 02:50:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 02:50:19,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:19,890 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2024-11-28 02:50:19,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:20,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:20,091 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:20,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1654021457, now seen corresponding path program 2 times [2024-11-28 02:50:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110300638] [2024-11-28 02:50:20,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:20,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:20,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110300638] [2024-11-28 02:50:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110300638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799496402] [2024-11-28 02:50:20,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:20,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:20,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:50:20,332 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:20,332 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:20,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:50:20,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:20,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799496402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:20,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 02:50:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877618359] [2024-11-28 02:50:20,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:20,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:50:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:20,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:50:20,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:50:20,638 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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) [2024-11-28 02:50:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:20,974 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2024-11-28 02:50:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:50:20,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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) Word has length 43 [2024-11-28 02:50:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:20,977 INFO L225 Difference]: With dead ends: 123 [2024-11-28 02:50:20,977 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 02:50:20,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:50:20,978 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 64 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:20,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 8 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:50:20,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 02:50:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2024-11-28 02:50:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 107 states have internal predecessors, (123), 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) [2024-11-28 02:50:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2024-11-28 02:50:21,012 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 43 [2024-11-28 02:50:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:21,012 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2024-11-28 02:50:21,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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) [2024-11-28 02:50:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2024-11-28 02:50:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 02:50:21,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:21,019 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1] [2024-11-28 02:50:21,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:50:21,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:21,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:21,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:21,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1558485041, now seen corresponding path program 3 times [2024-11-28 02:50:21,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:21,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025855440] [2024-11-28 02:50:21,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:21,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:21,260 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:50:21,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-28 02:50:21,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:21,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025855440] [2024-11-28 02:50:21,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025855440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:21,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:21,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:50:21,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174913249] [2024-11-28 02:50:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:21,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:21,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:21,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:21,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:21,510 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-28 02:50:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:21,598 INFO L93 Difference]: Finished difference Result 211 states and 243 transitions. [2024-11-28 02:50:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:50:21,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) Word has length 55 [2024-11-28 02:50:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:21,600 INFO L225 Difference]: With dead ends: 211 [2024-11-28 02:50:21,600 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 02:50:21,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:21,601 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:21,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 9 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 02:50:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2024-11-28 02:50:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 99 states have internal predecessors, (110), 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) [2024-11-28 02:50:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-11-28 02:50:21,616 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 55 [2024-11-28 02:50:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:21,616 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-11-28 02:50:21,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-28 02:50:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-11-28 02:50:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 02:50:21,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:21,619 INFO L218 NwaCegarLoop]: trace histogram [19, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2024-11-28 02:50:21,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:50:21,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:21,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 301513385, now seen corresponding path program 1 times [2024-11-28 02:50:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482315841] [2024-11-28 02:50:21,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 17 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482315841] [2024-11-28 02:50:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482315841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555528079] [2024-11-28 02:50:24,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:24,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:24,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:24,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:24,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:50:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:24,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:50:24,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 17 proven. 559 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:25,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 34 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:26,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555528079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:26,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 29, 20] total 80 [2024-11-28 02:50:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85117065] [2024-11-28 02:50:26,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:26,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-28 02:50:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:26,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-28 02:50:26,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2667, Invalid=3813, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 02:50:26,782 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 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) [2024-11-28 02:50:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:28,287 INFO L93 Difference]: Finished difference Result 886 states and 1010 transitions. [2024-11-28 02:50:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-28 02:50:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 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) Word has length 97 [2024-11-28 02:50:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:28,292 INFO L225 Difference]: With dead ends: 886 [2024-11-28 02:50:28,295 INFO L226 Difference]: Without dead ends: 885 [2024-11-28 02:50:28,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5557 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4423, Invalid=6707, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 02:50:28,303 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 304 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:28,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 10 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:50:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-28 02:50:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 258. [2024-11-28 02:50:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.132295719844358) internal successors, (291), 257 states have internal predecessors, (291), 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) [2024-11-28 02:50:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 291 transitions. [2024-11-28 02:50:28,358 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 291 transitions. Word has length 97 [2024-11-28 02:50:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:28,358 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 291 transitions. [2024-11-28 02:50:28,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.3625) internal successors, (269), 81 states have internal predecessors, (269), 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) [2024-11-28 02:50:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 291 transitions. [2024-11-28 02:50:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 02:50:28,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:28,367 INFO L218 NwaCegarLoop]: trace histogram [41, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1] [2024-11-28 02:50:28,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:50:28,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:50:28,568 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:28,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:28,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1989939951, now seen corresponding path program 2 times [2024-11-28 02:50:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914697777] [2024-11-28 02:50:28,569 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:28,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:28,851 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:28,851 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 39 proven. 2781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914697777] [2024-11-28 02:50:37,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914697777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789452308] [2024-11-28 02:50:37,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:37,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:37,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:37,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:37,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:50:38,082 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:38,082 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:38,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 02:50:38,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 39 proven. 2781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:40,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 78 proven. 2742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:50:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789452308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:42,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 62, 42] total 179 [2024-11-28 02:50:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226667707] [2024-11-28 02:50:42,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:42,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 180 states [2024-11-28 02:50:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:42,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2024-11-28 02:50:42,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12087, Invalid=20133, Unknown=0, NotChecked=0, Total=32220 [2024-11-28 02:50:42,749 INFO L87 Difference]: Start difference. First operand 258 states and 291 transitions. Second operand has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 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) [2024-11-28 02:50:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:50,021 INFO L93 Difference]: Finished difference Result 6158 states and 6966 transitions. [2024-11-28 02:50:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-11-28 02:50:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 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) Word has length 207 [2024-11-28 02:50:50,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:50,043 INFO L225 Difference]: With dead ends: 6158 [2024-11-28 02:50:50,044 INFO L226 Difference]: Without dead ends: 6157 [2024-11-28 02:50:50,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 312 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45016 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=29616, Invalid=57114, Unknown=0, NotChecked=0, Total=86730 [2024-11-28 02:50:50,056 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 732 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:50,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 12 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:50:50,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2024-11-28 02:50:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 484. [2024-11-28 02:50:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.1221532091097308) internal successors, (542), 483 states have internal predecessors, (542), 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) [2024-11-28 02:50:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 542 transitions. [2024-11-28 02:50:50,182 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 542 transitions. Word has length 207 [2024-11-28 02:50:50,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:50,183 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 542 transitions. [2024-11-28 02:50:50,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 180 states, 179 states have (on average 3.346368715083799) internal successors, (599), 180 states have internal predecessors, (599), 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) [2024-11-28 02:50:50,184 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 542 transitions. [2024-11-28 02:50:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-28 02:50:50,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:50,192 INFO L218 NwaCegarLoop]: trace histogram [45, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-28 02:50:50,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:50,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:50,392 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 02:50:50,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 238968705, now seen corresponding path program 3 times [2024-11-28 02:50:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355840587] [2024-11-28 02:50:50,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:51,268 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-28 02:50:51,268 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 0 proven. 3410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:51:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355840587] [2024-11-28 02:51:48,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355840587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859089960] [2024-11-28 02:51:48,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:51:48,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:48,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:48,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15ec038-8b5c-4e1f-99aa-470112fd757d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process