./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/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_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:22:51,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:22:51,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:22:51,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:22:51,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:22:51,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:22:51,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:22:51,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:22:51,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:22:51,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:22:51,649 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:22:51,649 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:22:51,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:22:51,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:22:51,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:22:51,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:22:51,652 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:22:51,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:51,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:22:51,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:22:51,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:22:51,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:22:51,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:22:51,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:22:51,654 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_5f9a23c7-ec1f-440e-888b-5dc217e64e66/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 ! call(reach_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2024-11-28 02:22:51,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:22:51,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:22:52,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:22:52,004 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:22:52,004 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:22:52,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-28 02:22:55,171 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/data/d7f7cae4a/dbf81b87115548aba191e53353a57448/FLAG652669f2f [2024-11-28 02:22:55,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:22:55,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2024-11-28 02:22:55,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/data/d7f7cae4a/dbf81b87115548aba191e53353a57448/FLAG652669f2f [2024-11-28 02:22:55,526 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/data/d7f7cae4a/dbf81b87115548aba191e53353a57448 [2024-11-28 02:22:55,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:22:55,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:22:55,534 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:55,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:22:55,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:22:55,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391da7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55, skipping insertion in model container [2024-11-28 02:22:55,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:22:55,738 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-11-28 02:22:55,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:55,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:22:55,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2024-11-28 02:22:55,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:22:55,783 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:22:55,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55 WrapperNode [2024-11-28 02:22:55,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:22:55,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:55,785 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:22:55,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:22:55,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,812 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-28 02:22:55,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:22:55,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:22:55,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:22:55,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,833 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:22:55,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,836 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:22:55,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:22:55,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:22:55,847 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:22:55,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (1/1) ... [2024-11-28 02:22:55,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:22:55,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:55,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:22:55,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:22:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:22:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:22:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-28 02:22:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-28 02:22:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-28 02:22:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-28 02:22:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:22:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:22:55,986 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:22:55,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:22:56,137 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 02:22:56,137 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:22:56,151 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:22:56,151 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:22:56,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56 BoogieIcfgContainer [2024-11-28 02:22:56,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:22:56,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:22:56,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:22:56,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:22:56,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:22:55" (1/3) ... [2024-11-28 02:22:56,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100571d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:22:55" (2/3) ... [2024-11-28 02:22:56,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100571d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:22:56, skipping insertion in model container [2024-11-28 02:22:56,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56" (3/3) ... [2024-11-28 02:22:56,166 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2024-11-28 02:22:56,184 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:22:56,186 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_8-1.c that has 3 procedures, 29 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:22:56,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:22:56,272 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;@427e8e13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:22:56,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:22:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:22:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 02:22:56,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:56,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:56,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:56,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-28 02:22:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:56,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853583327] [2024-11-28 02:22:56,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,586 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 02:22:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853583327] [2024-11-28 02:22:56,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853583327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:56,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:22:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451081684] [2024-11-28 02:22:56,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:56,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:56,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:56,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:56,621 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:56,749 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-28 02:22:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:56,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-28 02:22:56,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:56,760 INFO L225 Difference]: With dead ends: 41 [2024-11-28 02:22:56,761 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:22:56,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:56,769 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:56,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:22:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-28 02:22:56,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 02:22:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-28 02:22:56,828 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-28 02:22:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:56,829 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-28 02:22:56,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:56,829 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-28 02:22:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 02:22:56,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:56,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:56,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:22:56,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:56,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-28 02:22:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107085245] [2024-11-28 02:22:56,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:56,967 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 02:22:56,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:56,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107085245] [2024-11-28 02:22:56,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107085245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:22:56,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:22:56,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:22:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69366266] [2024-11-28 02:22:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:22:56,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:22:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:56,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:22:56,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:56,973 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:57,064 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-28 02:22:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:22:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-28 02:22:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:57,066 INFO L225 Difference]: With dead ends: 33 [2024-11-28 02:22:57,066 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:22:57,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:22:57,067 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:57,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:57,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:22:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-28 02:22:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 02:22:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-28 02:22:57,077 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-28 02:22:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:57,077 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-28 02:22:57,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:22:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-28 02:22:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:22:57,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:57,079 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:57,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:22:57,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:57,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:57,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-28 02:22:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726338304] [2024-11-28 02:22:57,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726338304] [2024-11-28 02:22:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726338304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130777967] [2024-11-28 02:22:57,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:57,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:57,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:57,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:57,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:22:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:57,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:22:57,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:57,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:57,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130777967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:57,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:57,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-28 02:22:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405378569] [2024-11-28 02:22:57,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:57,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:22:57,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:57,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:22:57,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:22:57,882 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:22:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:58,075 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-28 02:22:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:22:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-28 02:22:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:58,077 INFO L225 Difference]: With dead ends: 55 [2024-11-28 02:22:58,077 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 02:22:58,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:22:58,078 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:58,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 02:22:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-28 02:22:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 02:22:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-28 02:22:58,092 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-28 02:22:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:58,092 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-28 02:22:58,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:22:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-28 02:22:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:22:58,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:58,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:58,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:22:58,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:58,300 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:58,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-28 02:22:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:58,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558846246] [2024-11-28 02:22:58,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:58,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:58,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558846246] [2024-11-28 02:22:58,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558846246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:58,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537791974] [2024-11-28 02:22:58,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:58,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:58,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:58,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:58,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:22:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:58,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:22:58,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:58,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:22:58,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537791974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:58,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 02:22:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103469740] [2024-11-28 02:22:58,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:58,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:22:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:58,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:22:58,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:22:58,744 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:22:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:22:58,903 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-28 02:22:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:22:58,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-28 02:22:58,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:22:58,905 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:22:58,905 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 02:22:58,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:22:58,906 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:22:58,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:22:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 02:22:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-28 02:22:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 02:22:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-28 02:22:58,921 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-28 02:22:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:22:58,922 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-28 02:22:58,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:22:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-28 02:22:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:22:58,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:22:58,923 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:22:58,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:22:59,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:59,124 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:22:59,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:22:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-28 02:22:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:22:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278584659] [2024-11-28 02:22:59,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:22:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:22:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278584659] [2024-11-28 02:22:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278584659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:22:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103711249] [2024-11-28 02:22:59,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:22:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:22:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:22:59,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:22:59,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:22:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:22:59,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:22:59,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:22:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:22:59,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:22:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:22:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103711249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:22:59,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:22:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-28 02:22:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019717599] [2024-11-28 02:22:59,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:22:59,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:22:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:22:59,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:22:59,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:22:59,917 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-28 02:23:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:00,143 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-28 02:23:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:23:00,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-28 02:23:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:00,145 INFO L225 Difference]: With dead ends: 69 [2024-11-28 02:23:00,145 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 02:23:00,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:23:00,147 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:00,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 02:23:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-28 02:23:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:23:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-28 02:23:00,158 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-28 02:23:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:00,158 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-28 02:23:00,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-28 02:23:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-28 02:23:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 02:23:00,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:00,159 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:00,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:23:00,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:00,360 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:00,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-28 02:23:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361037300] [2024-11-28 02:23:00,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:23:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361037300] [2024-11-28 02:23:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361037300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720877583] [2024-11-28 02:23:00,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:00,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:00,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:00,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:23:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:00,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:23:00,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:23:00,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:23:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720877583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:01,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-28 02:23:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988271539] [2024-11-28 02:23:01,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:01,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:23:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:01,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:23:01,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:23:01,230 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-28 02:23:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:01,761 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-28 02:23:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:23:01,762 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-28 02:23:01,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:01,764 INFO L225 Difference]: With dead ends: 101 [2024-11-28 02:23:01,764 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 02:23:01,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:23:01,766 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:01,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:23:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 02:23:01,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-28 02:23:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 02:23:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-28 02:23:01,780 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-28 02:23:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:01,781 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-28 02:23:01,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-28 02:23:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-28 02:23:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 02:23:01,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:01,783 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:01,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:23:01,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:23:01,984 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:01,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-28 02:23:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368391391] [2024-11-28 02:23:01,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:23:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368391391] [2024-11-28 02:23:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368391391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523154079] [2024-11-28 02:23:02,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:02,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:02,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:02,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:23:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:02,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:23:02,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:23:02,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:23:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523154079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:03,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-28 02:23:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253947339] [2024-11-28 02:23:03,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:23:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:03,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:23:03,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:23:03,125 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 02:23:03,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:03,433 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-28 02:23:03,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:23:03,435 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-28 02:23:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:03,438 INFO L225 Difference]: With dead ends: 102 [2024-11-28 02:23:03,439 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 02:23:03,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:23:03,441 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:03,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 164 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 02:23:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-28 02:23:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-28 02:23:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-28 02:23:03,475 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-28 02:23:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:03,475 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-28 02:23:03,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 02:23:03,484 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-28 02:23:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:23:03,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:03,493 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:03,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:23:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:23:03,694 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-28 02:23:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646509798] [2024-11-28 02:23:03,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 02:23:03,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646509798] [2024-11-28 02:23:03,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646509798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399837808] [2024-11-28 02:23:03,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:03,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:03,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:03,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:23:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:04,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:23:04,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-28 02:23:04,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-28 02:23:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399837808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:05,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-28 02:23:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134159280] [2024-11-28 02:23:05,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:05,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:23:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:05,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:23:05,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:23:05,527 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-28 02:23:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:06,341 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-28 02:23:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:23:06,342 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 93 [2024-11-28 02:23:06,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:06,344 INFO L225 Difference]: With dead ends: 177 [2024-11-28 02:23:06,345 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 02:23:06,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:23:06,348 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 96 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:06,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 325 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:23:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 02:23:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-28 02:23:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-28 02:23:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-28 02:23:06,368 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-28 02:23:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:06,368 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-28 02:23:06,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-28 02:23:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-28 02:23:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 02:23:06,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:06,371 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 10, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:06,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:06,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:23:06,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:06,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash 437944761, now seen corresponding path program 2 times [2024-11-28 02:23:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15780966] [2024-11-28 02:23:06,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:06,617 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:06,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 43 proven. 179 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-28 02:23:06,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15780966] [2024-11-28 02:23:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15780966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974985902] [2024-11-28 02:23:06,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:06,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:06,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:06,899 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:06,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:23:07,008 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:07,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:07,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:23:07,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 244 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-28 02:23:07,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-28 02:23:08,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974985902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:08,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:08,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-28 02:23:08,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543093873] [2024-11-28 02:23:08,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:08,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:23:08,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:08,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:23:08,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:23:08,843 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-28 02:23:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:09,211 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-28 02:23:09,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:23:09,212 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 159 [2024-11-28 02:23:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:09,215 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:23:09,215 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 02:23:09,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:23:09,216 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:09,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 02:23:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-28 02:23:09,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-28 02:23:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-28 02:23:09,243 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 159 [2024-11-28 02:23:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:09,244 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-28 02:23:09,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.619047619047619) internal successors, (76), 23 states have internal predecessors, (76), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-28 02:23:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-28 02:23:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-28 02:23:09,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:09,248 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:09,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:09,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:09,452 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:09,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:09,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-28 02:23:09,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:09,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711710387] [2024-11-28 02:23:09,453 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:09,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:09,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:09,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-28 02:23:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711710387] [2024-11-28 02:23:10,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711710387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:10,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370169067] [2024-11-28 02:23:10,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:10,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:10,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:10,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:23:10,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:10,268 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:10,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:23:10,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-28 02:23:10,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-28 02:23:12,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370169067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:12,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 28 [2024-11-28 02:23:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143958951] [2024-11-28 02:23:12,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:12,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:23:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:12,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:23:12,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:12,933 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-28 02:23:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:13,958 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-28 02:23:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 02:23:13,959 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) Word has length 284 [2024-11-28 02:23:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:13,963 INFO L225 Difference]: With dead ends: 323 [2024-11-28 02:23:13,963 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 02:23:13,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=446, Invalid=2310, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:23:13,966 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:13,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 460 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:23:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 02:23:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-28 02:23:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-28 02:23:14,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-28 02:23:14,002 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-28 02:23:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:14,003 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-28 02:23:14,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-28 02:23:14,004 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-28 02:23:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2024-11-28 02:23:14,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:14,023 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 36, 35, 35, 27, 24, 24, 24, 24, 24, 24, 24, 19, 17, 17, 17, 17, 17, 17, 17, 12, 8, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:14,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:14,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:14,227 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:14,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash -278566935, now seen corresponding path program 3 times [2024-11-28 02:23:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44591824] [2024-11-28 02:23:14,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:14,290 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 02:23:14,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1260 proven. 86 refuted. 0 times theorem prover too weak. 8175 trivial. 0 not checked. [2024-11-28 02:23:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44591824] [2024-11-28 02:23:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44591824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878643235] [2024-11-28 02:23:14,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:14,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:14,606 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:14,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:23:14,815 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 02:23:14,815 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:14,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:23:14,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1440 proven. 99 refuted. 0 times theorem prover too weak. 7982 trivial. 0 not checked. [2024-11-28 02:23:14,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9521 backedges. 1440 proven. 102 refuted. 0 times theorem prover too weak. 7979 trivial. 0 not checked. [2024-11-28 02:23:17,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878643235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:17,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:17,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 23 [2024-11-28 02:23:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284428245] [2024-11-28 02:23:17,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:17,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:23:17,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:17,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:23:17,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:23:17,466 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-28 02:23:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:17,942 INFO L93 Difference]: Finished difference Result 422 states and 830 transitions. [2024-11-28 02:23:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 02:23:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) Word has length 565 [2024-11-28 02:23:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:17,947 INFO L225 Difference]: With dead ends: 422 [2024-11-28 02:23:17,947 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 02:23:17,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1156 GetRequests, 1115 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 02:23:17,951 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:17,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 265 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 02:23:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 204. [2024-11-28 02:23:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 137 states have (on average 1.145985401459854) internal successors, (157), 136 states have internal predecessors, (157), 38 states have call successors, (38), 20 states have call predecessors, (38), 28 states have return successors, (133), 47 states have call predecessors, (133), 38 states have call successors, (133) [2024-11-28 02:23:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 328 transitions. [2024-11-28 02:23:17,990 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 328 transitions. Word has length 565 [2024-11-28 02:23:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:17,991 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 328 transitions. [2024-11-28 02:23:17,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 13 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-28 02:23:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 328 transitions. [2024-11-28 02:23:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-11-28 02:23:18,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:18,000 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 25, 25, 25, 21, 17, 17, 17, 17, 17, 17, 17, 13, 12, 12, 12, 12, 12, 12, 12, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:18,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:18,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:18,204 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:18,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1787527787, now seen corresponding path program 4 times [2024-11-28 02:23:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442605998] [2024-11-28 02:23:18,205 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:18,251 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:18,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 145 proven. 818 refuted. 0 times theorem prover too weak. 3799 trivial. 0 not checked. [2024-11-28 02:23:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442605998] [2024-11-28 02:23:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442605998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460537133] [2024-11-28 02:23:18,752 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:18,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:18,755 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:18,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:23:19,049 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:19,049 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:19,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:23:19,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 145 proven. 818 refuted. 0 times theorem prover too weak. 3799 trivial. 0 not checked. [2024-11-28 02:23:19,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4762 backedges. 145 proven. 839 refuted. 0 times theorem prover too weak. 3778 trivial. 0 not checked. [2024-11-28 02:23:21,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460537133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:21,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:21,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 19 [2024-11-28 02:23:21,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315188522] [2024-11-28 02:23:21,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:21,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:23:21,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:21,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:23:21,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:23:21,951 INFO L87 Difference]: Start difference. First operand 204 states and 328 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-28 02:23:22,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:22,260 INFO L93 Difference]: Finished difference Result 284 states and 538 transitions. [2024-11-28 02:23:22,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:23:22,260 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) Word has length 404 [2024-11-28 02:23:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:22,267 INFO L225 Difference]: With dead ends: 284 [2024-11-28 02:23:22,267 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 02:23:22,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 798 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:23:22,269 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:22,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 161 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 02:23:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 219. [2024-11-28 02:23:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 146 states have (on average 1.1369863013698631) internal successors, (166), 145 states have internal predecessors, (166), 41 states have call successors, (41), 20 states have call predecessors, (41), 31 states have return successors, (163), 53 states have call predecessors, (163), 41 states have call successors, (163) [2024-11-28 02:23:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 370 transitions. [2024-11-28 02:23:22,308 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 370 transitions. Word has length 404 [2024-11-28 02:23:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:22,309 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 370 transitions. [2024-11-28 02:23:22,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-28 02:23:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 370 transitions. [2024-11-28 02:23:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-28 02:23:22,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:22,314 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 28, 27, 27, 25, 19, 19, 19, 19, 19, 19, 19, 15, 13, 13, 13, 13, 13, 13, 13, 10, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:22,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:22,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:23:22,518 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:22,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1212687592, now seen corresponding path program 5 times [2024-11-28 02:23:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152697235] [2024-11-28 02:23:22,519 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:22,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:22,547 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 02:23:22,547 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 208 proven. 696 refuted. 0 times theorem prover too weak. 4986 trivial. 0 not checked. [2024-11-28 02:23:22,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:22,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152697235] [2024-11-28 02:23:22,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152697235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171746091] [2024-11-28 02:23:22,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:22,650 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:22,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:23:22,830 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 02:23:22,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:22,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:23:22,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 1436 proven. 7 refuted. 0 times theorem prover too weak. 4447 trivial. 0 not checked. [2024-11-28 02:23:22,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5890 backedges. 208 proven. 696 refuted. 0 times theorem prover too weak. 4986 trivial. 0 not checked. [2024-11-28 02:23:24,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171746091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:24,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 02:23:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118746794] [2024-11-28 02:23:24,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:24,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:23:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:24,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:23:24,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:24,481 INFO L87 Difference]: Start difference. First operand 219 states and 370 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-28 02:23:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:24,698 INFO L93 Difference]: Finished difference Result 444 states and 811 transitions. [2024-11-28 02:23:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:23:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 447 [2024-11-28 02:23:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:24,703 INFO L225 Difference]: With dead ends: 444 [2024-11-28 02:23:24,703 INFO L226 Difference]: Without dead ends: 212 [2024-11-28 02:23:24,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 887 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:23:24,707 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:24,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 213 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-28 02:23:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-28 02:23:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 144 states have (on average 1.1180555555555556) internal successors, (161), 139 states have internal predecessors, (161), 38 states have call successors, (38), 22 states have call predecessors, (38), 29 states have return successors, (150), 50 states have call predecessors, (150), 38 states have call successors, (150) [2024-11-28 02:23:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 349 transitions. [2024-11-28 02:23:24,742 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 349 transitions. Word has length 447 [2024-11-28 02:23:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:24,742 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 349 transitions. [2024-11-28 02:23:24,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 5 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-28 02:23:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 349 transitions. [2024-11-28 02:23:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-28 02:23:24,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:24,748 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 28, 28, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 12, 10, 9, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:24,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:24,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:23:24,949 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:24,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1820632177, now seen corresponding path program 6 times [2024-11-28 02:23:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:24,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471570259] [2024-11-28 02:23:24,949 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:24,979 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:23:24,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 636 proven. 2 refuted. 0 times theorem prover too weak. 6206 trivial. 0 not checked. [2024-11-28 02:23:25,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471570259] [2024-11-28 02:23:25,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471570259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023954646] [2024-11-28 02:23:25,098 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:25,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:25,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:25,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:23:25,278 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:23:25,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:25,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:23:25,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 766 proven. 6 refuted. 0 times theorem prover too weak. 6072 trivial. 0 not checked. [2024-11-28 02:23:25,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 766 proven. 6 refuted. 0 times theorem prover too weak. 6072 trivial. 0 not checked. [2024-11-28 02:23:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023954646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:26,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:26,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 02:23:26,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979404845] [2024-11-28 02:23:26,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:26,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:23:26,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:26,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:23:26,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:23:26,783 INFO L87 Difference]: Start difference. First operand 212 states and 349 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:23:26,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:26,940 INFO L93 Difference]: Finished difference Result 365 states and 619 transitions. [2024-11-28 02:23:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:23:26,941 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 486 [2024-11-28 02:23:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:26,945 INFO L225 Difference]: With dead ends: 365 [2024-11-28 02:23:26,945 INFO L226 Difference]: Without dead ends: 150 [2024-11-28 02:23:26,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 961 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:23:26,947 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:26,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 135 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-28 02:23:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2024-11-28 02:23:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 98 states have internal predecessors, (117), 24 states have call successors, (24), 19 states have call predecessors, (24), 18 states have return successors, (68), 27 states have call predecessors, (68), 24 states have call successors, (68) [2024-11-28 02:23:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 209 transitions. [2024-11-28 02:23:26,966 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 209 transitions. Word has length 486 [2024-11-28 02:23:26,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:26,969 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 209 transitions. [2024-11-28 02:23:26,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-28 02:23:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 209 transitions. [2024-11-28 02:23:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-28 02:23:26,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:26,973 INFO L218 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 31, 28, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:26,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:23:27,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:23:27,177 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:27,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1199543511, now seen corresponding path program 7 times [2024-11-28 02:23:27,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48929642] [2024-11-28 02:23:27,178 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 214 proven. 858 refuted. 0 times theorem prover too weak. 5859 trivial. 0 not checked. [2024-11-28 02:23:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48929642] [2024-11-28 02:23:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48929642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963695258] [2024-11-28 02:23:27,932 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:27,935 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:27,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:23:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:28,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:23:28,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 225 proven. 1008 refuted. 0 times theorem prover too weak. 5698 trivial. 0 not checked. [2024-11-28 02:23:28,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:31,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6931 backedges. 233 proven. 1021 refuted. 0 times theorem prover too weak. 5677 trivial. 0 not checked. [2024-11-28 02:23:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963695258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:31,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 17] total 28 [2024-11-28 02:23:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322602814] [2024-11-28 02:23:31,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:31,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:23:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:31,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:23:31,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:31,183 INFO L87 Difference]: Start difference. First operand 145 states and 209 transitions. Second operand has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 21 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) [2024-11-28 02:23:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:32,354 INFO L93 Difference]: Finished difference Result 453 states and 836 transitions. [2024-11-28 02:23:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 02:23:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 21 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) Word has length 489 [2024-11-28 02:23:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:32,358 INFO L225 Difference]: With dead ends: 453 [2024-11-28 02:23:32,359 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 02:23:32,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 957 SyntacticMatches, 8 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=2655, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:23:32,363 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:32,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 508 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:23:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 02:23:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 176. [2024-11-28 02:23:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 123 states have (on average 1.113821138211382) internal successors, (137), 117 states have internal predecessors, (137), 32 states have call successors, (32), 24 states have call predecessors, (32), 20 states have return successors, (79), 34 states have call predecessors, (79), 32 states have call successors, (79) [2024-11-28 02:23:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 248 transitions. [2024-11-28 02:23:32,390 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 248 transitions. Word has length 489 [2024-11-28 02:23:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:32,390 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 248 transitions. [2024-11-28 02:23:32,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 21 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) [2024-11-28 02:23:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 248 transitions. [2024-11-28 02:23:32,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-28 02:23:32,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:32,395 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 30, 26, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 13, 9, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:32,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 02:23:32,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:23:32,599 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:32,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1642377338, now seen corresponding path program 8 times [2024-11-28 02:23:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:32,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491454675] [2024-11-28 02:23:32,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:32,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:32,680 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:32,680 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6472 backedges. 326 proven. 763 refuted. 0 times theorem prover too weak. 5383 trivial. 0 not checked. [2024-11-28 02:23:33,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491454675] [2024-11-28 02:23:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491454675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:33,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255361604] [2024-11-28 02:23:33,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:33,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:33,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:33,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:33,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:23:33,765 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:33,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:33,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:23:33,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:33,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6472 backedges. 359 proven. 995 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2024-11-28 02:23:33,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6472 backedges. 361 proven. 1023 refuted. 0 times theorem prover too weak. 5088 trivial. 0 not checked. [2024-11-28 02:23:37,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255361604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:37,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2024-11-28 02:23:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868766040] [2024-11-28 02:23:37,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:37,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:23:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:37,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:23:37,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:23:37,488 INFO L87 Difference]: Start difference. First operand 176 states and 248 transitions. Second operand has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-28 02:23:37,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:37,930 INFO L93 Difference]: Finished difference Result 206 states and 309 transitions. [2024-11-28 02:23:37,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:23:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) Word has length 474 [2024-11-28 02:23:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:37,935 INFO L225 Difference]: With dead ends: 206 [2024-11-28 02:23:37,935 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 02:23:37,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 971 GetRequests, 931 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:23:37,938 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:37,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 383 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:23:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 02:23:37,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-11-28 02:23:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 123 states have (on average 1.113821138211382) internal successors, (137), 117 states have internal predecessors, (137), 32 states have call successors, (32), 24 states have call predecessors, (32), 20 states have return successors, (79), 34 states have call predecessors, (79), 32 states have call successors, (79) [2024-11-28 02:23:37,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 248 transitions. [2024-11-28 02:23:37,967 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 248 transitions. Word has length 474 [2024-11-28 02:23:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:37,967 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 248 transitions. [2024-11-28 02:23:37,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-28 02:23:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 248 transitions. [2024-11-28 02:23:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-28 02:23:37,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:37,973 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 28, 25, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 12, 9, 7, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:37,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:23:38,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:23:38,177 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:38,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1302001118, now seen corresponding path program 9 times [2024-11-28 02:23:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:38,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921018026] [2024-11-28 02:23:38,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:38,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:38,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 02:23:38,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5734 backedges. 833 proven. 150 refuted. 0 times theorem prover too weak. 4751 trivial. 0 not checked. [2024-11-28 02:23:38,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921018026] [2024-11-28 02:23:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921018026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:38,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255183566] [2024-11-28 02:23:38,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:23:38,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:38,489 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:38,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:23:38,790 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 02:23:38,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:38,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:23:38,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5734 backedges. 2351 proven. 34 refuted. 0 times theorem prover too weak. 3349 trivial. 0 not checked. [2024-11-28 02:23:38,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:40,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5734 backedges. 934 proven. 183 refuted. 0 times theorem prover too weak. 4617 trivial. 0 not checked. [2024-11-28 02:23:40,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255183566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:40,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:40,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 21 [2024-11-28 02:23:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456192378] [2024-11-28 02:23:40,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:40,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:23:40,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:40,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:23:40,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:23:40,983 INFO L87 Difference]: Start difference. First operand 176 states and 248 transitions. Second operand has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-28 02:23:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:41,344 INFO L93 Difference]: Finished difference Result 306 states and 432 transitions. [2024-11-28 02:23:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:23:41,344 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) Word has length 447 [2024-11-28 02:23:41,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:41,347 INFO L225 Difference]: With dead ends: 306 [2024-11-28 02:23:41,347 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 02:23:41,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 880 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:23:41,349 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:41,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 249 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 02:23:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 148. [2024-11-28 02:23:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 102 states have (on average 1.088235294117647) internal successors, (111), 99 states have internal predecessors, (111), 27 states have call successors, (27), 18 states have call predecessors, (27), 18 states have return successors, (63), 30 states have call predecessors, (63), 27 states have call successors, (63) [2024-11-28 02:23:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 201 transitions. [2024-11-28 02:23:41,369 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 201 transitions. Word has length 447 [2024-11-28 02:23:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:41,370 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 201 transitions. [2024-11-28 02:23:41,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.0476190476190474) internal successors, (85), 21 states have internal predecessors, (85), 12 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (30), 10 states have call predecessors, (30), 12 states have call successors, (30) [2024-11-28 02:23:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 201 transitions. [2024-11-28 02:23:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-28 02:23:41,374 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:41,374 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 27, 26, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:41,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:41,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:23:41,578 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:41,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash -398380614, now seen corresponding path program 10 times [2024-11-28 02:23:41,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:41,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369695898] [2024-11-28 02:23:41,579 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:41,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:41,625 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:41,625 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5732 backedges. 645 proven. 163 refuted. 0 times theorem prover too weak. 4924 trivial. 0 not checked. [2024-11-28 02:23:41,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369695898] [2024-11-28 02:23:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369695898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69463606] [2024-11-28 02:23:41,923 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:23:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:41,925 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:23:42,221 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:23:42,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:42,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:23:42,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5732 backedges. 463 proven. 803 refuted. 0 times theorem prover too weak. 4466 trivial. 0 not checked. [2024-11-28 02:23:42,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5732 backedges. 465 proven. 831 refuted. 0 times theorem prover too weak. 4436 trivial. 0 not checked. [2024-11-28 02:23:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69463606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:46,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 19] total 29 [2024-11-28 02:23:46,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167431917] [2024-11-28 02:23:46,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:46,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:23:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:46,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:23:46,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:23:46,005 INFO L87 Difference]: Start difference. First operand 148 states and 201 transitions. Second operand has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-28 02:23:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:47,066 INFO L93 Difference]: Finished difference Result 375 states and 597 transitions. [2024-11-28 02:23:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 02:23:47,067 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) Word has length 447 [2024-11-28 02:23:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:47,071 INFO L225 Difference]: With dead ends: 375 [2024-11-28 02:23:47,071 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 02:23:47,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 869 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=2543, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:23:47,075 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 114 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:47,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 607 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:23:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 02:23:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 203. [2024-11-28 02:23:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 140 states have (on average 1.0714285714285714) internal successors, (150), 138 states have internal predecessors, (150), 41 states have call successors, (41), 27 states have call predecessors, (41), 21 states have return successors, (98), 37 states have call predecessors, (98), 41 states have call successors, (98) [2024-11-28 02:23:47,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 289 transitions. [2024-11-28 02:23:47,141 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 289 transitions. Word has length 447 [2024-11-28 02:23:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:47,142 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 289 transitions. [2024-11-28 02:23:47,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 29 states have internal predecessors, (96), 22 states have call successors, (29), 1 states have call predecessors, (29), 14 states have return successors, (36), 17 states have call predecessors, (36), 22 states have call successors, (36) [2024-11-28 02:23:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 289 transitions. [2024-11-28 02:23:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-11-28 02:23:47,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:47,146 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 22, 22, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 9, 8, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:47,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:47,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:23:47,350 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:47,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1326548043, now seen corresponding path program 11 times [2024-11-28 02:23:47,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:47,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682502762] [2024-11-28 02:23:47,351 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:47,390 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:23:47,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4054 backedges. 314 proven. 555 refuted. 0 times theorem prover too weak. 3185 trivial. 0 not checked. [2024-11-28 02:23:47,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682502762] [2024-11-28 02:23:47,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682502762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:47,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911574726] [2024-11-28 02:23:47,589 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:23:47,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:47,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:47,592 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:47,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:23:47,884 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 02:23:47,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:47,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:23:47,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4054 backedges. 2167 proven. 63 refuted. 0 times theorem prover too weak. 1824 trivial. 0 not checked. [2024-11-28 02:23:47,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4054 backedges. 314 proven. 556 refuted. 0 times theorem prover too weak. 3184 trivial. 0 not checked. [2024-11-28 02:23:49,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911574726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:49,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:49,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 17 [2024-11-28 02:23:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782020091] [2024-11-28 02:23:49,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:49,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:23:49,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:49,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:23:49,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:23:49,370 INFO L87 Difference]: Start difference. First operand 203 states and 289 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 02:23:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:49,718 INFO L93 Difference]: Finished difference Result 397 states and 572 transitions. [2024-11-28 02:23:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:23:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) Word has length 378 [2024-11-28 02:23:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:49,721 INFO L225 Difference]: With dead ends: 397 [2024-11-28 02:23:49,721 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 02:23:49,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 746 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:23:49,723 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:49,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 287 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 02:23:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 210. [2024-11-28 02:23:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 145 states have (on average 1.0689655172413792) internal successors, (155), 142 states have internal predecessors, (155), 43 states have call successors, (43), 28 states have call predecessors, (43), 21 states have return successors, (94), 39 states have call predecessors, (94), 43 states have call successors, (94) [2024-11-28 02:23:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 292 transitions. [2024-11-28 02:23:49,759 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 292 transitions. Word has length 378 [2024-11-28 02:23:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:49,760 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 292 transitions. [2024-11-28 02:23:49,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 9 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (27), 12 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 02:23:49,760 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 292 transitions. [2024-11-28 02:23:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-28 02:23:49,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:49,765 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 33, 33, 28, 27, 18, 18, 18, 18, 18, 18, 18, 16, 16, 16, 16, 16, 16, 16, 12, 9, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:49,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:49,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:49,969 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:49,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1680476078, now seen corresponding path program 12 times [2024-11-28 02:23:49,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:49,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910778881] [2024-11-28 02:23:49,970 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:49,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:50,070 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 02:23:50,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 331 proven. 538 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2024-11-28 02:23:50,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910778881] [2024-11-28 02:23:50,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910778881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:50,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317486411] [2024-11-28 02:23:50,305 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:23:50,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:50,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:50,308 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:50,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:23:50,693 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 02:23:50,694 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:50,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:23:50,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 3135 proven. 17 refuted. 0 times theorem prover too weak. 3301 trivial. 0 not checked. [2024-11-28 02:23:50,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6453 backedges. 366 proven. 628 refuted. 0 times theorem prover too weak. 5459 trivial. 0 not checked. [2024-11-28 02:23:52,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317486411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:52,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-28 02:23:52,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478680209] [2024-11-28 02:23:52,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:52,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:23:52,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:52,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:23:52,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:23:52,401 INFO L87 Difference]: Start difference. First operand 210 states and 292 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 02:23:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:52,748 INFO L93 Difference]: Finished difference Result 380 states and 532 transitions. [2024-11-28 02:23:52,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:23:52,749 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) Word has length 473 [2024-11-28 02:23:52,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:52,752 INFO L225 Difference]: With dead ends: 380 [2024-11-28 02:23:52,752 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 02:23:52,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 934 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:23:52,754 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:52,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 189 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:23:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 02:23:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2024-11-28 02:23:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 125 states have (on average 1.072) internal successors, (134), 121 states have internal predecessors, (134), 34 states have call successors, (34), 25 states have call predecessors, (34), 18 states have return successors, (55), 31 states have call predecessors, (55), 34 states have call successors, (55) [2024-11-28 02:23:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 223 transitions. [2024-11-28 02:23:52,776 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 223 transitions. Word has length 473 [2024-11-28 02:23:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:52,777 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 223 transitions. [2024-11-28 02:23:52,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 9 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 8 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 02:23:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 223 transitions. [2024-11-28 02:23:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-28 02:23:52,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:52,781 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 34, 34, 29, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 12, 10, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:52,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:23:52,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:52,985 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:52,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1450125465, now seen corresponding path program 13 times [2024-11-28 02:23:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267514093] [2024-11-28 02:23:52,987 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:52,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 355 proven. 533 refuted. 0 times theorem prover too weak. 5960 trivial. 0 not checked. [2024-11-28 02:23:53,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267514093] [2024-11-28 02:23:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267514093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133232285] [2024-11-28 02:23:53,579 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:23:53,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:53,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:53,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:53,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:23:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:54,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:23:54,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 411 proven. 647 refuted. 0 times theorem prover too weak. 5790 trivial. 0 not checked. [2024-11-28 02:23:54,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:23:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 413 proven. 661 refuted. 0 times theorem prover too weak. 5774 trivial. 0 not checked. [2024-11-28 02:23:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133232285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:23:56,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:23:56,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-28 02:23:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033748056] [2024-11-28 02:23:56,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:23:56,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:23:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:56,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:23:56,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:23:56,446 INFO L87 Difference]: Start difference. First operand 178 states and 223 transitions. Second operand has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-28 02:23:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:56,645 INFO L93 Difference]: Finished difference Result 190 states and 238 transitions. [2024-11-28 02:23:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:23:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) Word has length 487 [2024-11-28 02:23:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:56,649 INFO L225 Difference]: With dead ends: 190 [2024-11-28 02:23:56,649 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 02:23:56,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 962 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:23:56,651 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:56,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:23:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 02:23:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2024-11-28 02:23:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 125 states have (on average 1.072) internal successors, (134), 121 states have internal predecessors, (134), 34 states have call successors, (34), 25 states have call predecessors, (34), 18 states have return successors, (55), 31 states have call predecessors, (55), 34 states have call successors, (55) [2024-11-28 02:23:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 223 transitions. [2024-11-28 02:23:56,673 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 223 transitions. Word has length 487 [2024-11-28 02:23:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:56,674 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 223 transitions. [2024-11-28 02:23:56,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-28 02:23:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 223 transitions. [2024-11-28 02:23:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-28 02:23:56,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:56,678 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 30, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:56,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:23:56,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:56,879 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:56,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1005758370, now seen corresponding path program 14 times [2024-11-28 02:23:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806867009] [2024-11-28 02:23:56,880 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:56,940 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:56,940 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 594 proven. 131 refuted. 0 times theorem prover too weak. 6524 trivial. 0 not checked. [2024-11-28 02:23:57,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806867009] [2024-11-28 02:23:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806867009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751451720] [2024-11-28 02:23:57,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:57,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:57,286 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:23:57,675 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:57,675 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:57,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 1131 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 02:23:57,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1013 proven. 429 refuted. 0 times theorem prover too weak. 5807 trivial. 0 not checked. [2024-11-28 02:23:57,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1013 proven. 459 refuted. 0 times theorem prover too weak. 5777 trivial. 0 not checked. [2024-11-28 02:24:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751451720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:01,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 19] total 28 [2024-11-28 02:24:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657288678] [2024-11-28 02:24:01,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:01,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:24:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:01,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:24:01,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:24:01,479 INFO L87 Difference]: Start difference. First operand 178 states and 223 transitions. Second operand has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-28 02:24:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:02,466 INFO L93 Difference]: Finished difference Result 253 states and 312 transitions. [2024-11-28 02:24:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 02:24:02,467 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) Word has length 501 [2024-11-28 02:24:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:02,471 INFO L225 Difference]: With dead ends: 253 [2024-11-28 02:24:02,471 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 02:24:02,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 976 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=409, Invalid=2453, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 02:24:02,476 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 93 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:02,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 533 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:24:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 02:24:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 173. [2024-11-28 02:24:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 122 states have (on average 1.0655737704918034) internal successors, (130), 119 states have internal predecessors, (130), 34 states have call successors, (34), 26 states have call predecessors, (34), 16 states have return successors, (40), 27 states have call predecessors, (40), 34 states have call successors, (40) [2024-11-28 02:24:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2024-11-28 02:24:02,499 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 501 [2024-11-28 02:24:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:02,500 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2024-11-28 02:24:02,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 28 states have internal predecessors, (92), 20 states have call successors, (27), 1 states have call predecessors, (27), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-28 02:24:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2024-11-28 02:24:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-28 02:24:02,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:02,505 INFO L218 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 31, 31, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 12, 12, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:02,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:02,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:24:02,709 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:02,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:02,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1128768692, now seen corresponding path program 15 times [2024-11-28 02:24:02,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:02,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529754071] [2024-11-28 02:24:02,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:24:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:02,803 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 02:24:02,803 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 556 proven. 478 refuted. 0 times theorem prover too weak. 7040 trivial. 0 not checked. [2024-11-28 02:24:03,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:03,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529754071] [2024-11-28 02:24:03,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529754071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:03,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957533606] [2024-11-28 02:24:03,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:24:03,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:03,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:03,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:03,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:24:03,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 02:24:03,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:03,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:24:03,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 631 proven. 526 refuted. 0 times theorem prover too weak. 6917 trivial. 0 not checked. [2024-11-28 02:24:03,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8074 backedges. 633 proven. 542 refuted. 0 times theorem prover too weak. 6899 trivial. 0 not checked. [2024-11-28 02:24:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957533606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:06,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-28 02:24:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724521620] [2024-11-28 02:24:06,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:06,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:24:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:06,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:24:06,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:24:06,220 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 02:24:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:06,395 INFO L93 Difference]: Finished difference Result 193 states and 226 transitions. [2024-11-28 02:24:06,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:24:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) Word has length 528 [2024-11-28 02:24:06,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:06,398 INFO L225 Difference]: With dead ends: 193 [2024-11-28 02:24:06,398 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 02:24:06,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1074 GetRequests, 1044 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:24:06,400 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:06,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 219 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:24:06,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 02:24:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2024-11-28 02:24:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 118 states have (on average 1.0677966101694916) internal successors, (126), 115 states have internal predecessors, (126), 32 states have call successors, (32), 25 states have call predecessors, (32), 16 states have return successors, (35), 26 states have call predecessors, (35), 32 states have call successors, (35) [2024-11-28 02:24:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2024-11-28 02:24:06,417 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 528 [2024-11-28 02:24:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:06,418 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2024-11-28 02:24:06,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 02:24:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2024-11-28 02:24:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-28 02:24:06,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:24:06,422 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:06,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:24:06,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:06,626 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:24:06,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:24:06,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1402769443, now seen corresponding path program 16 times [2024-11-28 02:24:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:24:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578109651] [2024-11-28 02:24:06,627 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:06,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:06,674 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:06,674 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-28 02:24:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578109651] [2024-11-28 02:24:14,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578109651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:14,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379116534] [2024-11-28 02:24:14,761 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:24:14,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:14,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:14,763 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:14,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:24:15,243 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:24:15,243 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:24:15,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 271 conjuncts are in the unsatisfiable core [2024-11-28 02:24:15,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:24:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-28 02:24:16,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:24:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2024-11-28 02:24:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379116534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:24:18,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:24:18,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 52 [2024-11-28 02:24:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144944861] [2024-11-28 02:24:18,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:24:18,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 02:24:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:24:19,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 02:24:19,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:24:19,001 INFO L87 Difference]: Start difference. First operand 167 states and 193 transitions. Second operand has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2024-11-28 02:24:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:24:19,572 INFO L93 Difference]: Finished difference Result 167 states and 193 transitions. [2024-11-28 02:24:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 02:24:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) Word has length 460 [2024-11-28 02:24:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:24:19,575 INFO L225 Difference]: With dead ends: 167 [2024-11-28 02:24:19,575 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:24:19,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:24:19,576 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:24:19,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2284 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:24:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:24:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:24:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:24:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:24:19,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 460 [2024-11-28 02:24:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:24:19,578 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:24:19,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 27 states have internal predecessors, (63), 11 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (35), 35 states have call predecessors, (35), 11 states have call successors, (35) [2024-11-28 02:24:19,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:24:19,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:24:19,581 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:24:19,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:24:19,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:19,789 INFO L422 BasicCegarLoop]: Path program histogram: [16, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:24:19,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:24:46,303 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:24:46,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:24:46 BoogieIcfgContainer [2024-11-28 02:24:46,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:24:46,309 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:24:46,309 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:24:46,310 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:24:46,310 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:22:56" (3/4) ... [2024-11-28 02:24:46,312 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:24:46,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-28 02:24:46,318 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-28 02:24:46,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:24:46,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:24:46,323 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:24:46,323 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:24:46,394 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:24:46,394 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:24:46,395 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:24:46,395 INFO L158 Benchmark]: Toolchain (without parser) took 110864.89ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 118.0MB in the beginning and 750.8MB in the end (delta: -632.8MB). Peak memory consumption was 901.1MB. Max. memory is 16.1GB. [2024-11-28 02:24:46,396 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:46,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.19ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 107.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:24:46,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.1MB in the end (delta: 906.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:46,396 INFO L158 Benchmark]: Boogie Preprocessor took 32.33ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 104.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:24:46,397 INFO L158 Benchmark]: RCFGBuilder took 306.76ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 94.6MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:24:46,397 INFO L158 Benchmark]: TraceAbstraction took 110152.97ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 93.9MB in the beginning and 755.3MB in the end (delta: -661.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-11-28 02:24:46,397 INFO L158 Benchmark]: Witness Printer took 85.28ms. Allocated memory is still 1.7GB. Free memory was 755.3MB in the beginning and 750.8MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:24:46,399 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.19ms. Allocated memory is still 142.6MB. Free memory was 118.0MB in the beginning and 107.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.1MB in the end (delta: 906.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.33ms. Allocated memory is still 142.6MB. Free memory was 106.1MB in the beginning and 104.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 306.76ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 94.6MB in the end (delta: 10.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 110152.97ms. Allocated memory was 142.6MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 93.9MB in the beginning and 755.3MB in the end (delta: -661.5MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 85.28ms. Allocated memory is still 1.7GB. Free memory was 755.3MB in the beginning and 750.8MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 83.6s, OverallIterations: 24, TraceHistogramMax: 48, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.1s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1216 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1134 mSDsluCounter, 8205 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7465 mSDsCounter, 1143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9031 IncrementalHoareTripleChecker+Invalid, 10174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1143 mSolverCounterUnsat, 740 mSDtfsCounter, 9031 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15174 GetRequests, 14394 SyntacticMatches, 122 SemanticMatches, 658 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4858 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=12, InterpolantAutomatonStates: 443, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 317 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 60.6s InterpolantComputationTime, 14607 NumberOfCodeBlocks, 10349 NumberOfCodeBlocksAsserted, 218 NumberOfCheckSat, 21832 ConstructedInterpolants, 0 QuantifiedInterpolants, 29324 SizeOfPredicates, 91 NumberOfNonLiveVariables, 11714 ConjunctsInSsa, 529 ConjunctsInUnsatCore, 68 InterpolantComputations, 2 PerfectInterpolantSequences, 253932/281517 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:24:46,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9a23c7-ec1f-440e-888b-5dc217e64e66/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE