./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.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_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/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_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/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_518c52a9-cfec-4a4c-b308-e4701db916a7/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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:50:36,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:50:36,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:50:36,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:50:36,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:50:36,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:50:36,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:50:36,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:50:36,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:50:36,482 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:50:36,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:50:36,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:50:36,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:50:36,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:50:36,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:50:36,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:50:36,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:36,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:50:36,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:36,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:50:36,486 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:50:36,487 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_518c52a9-cfec-4a4c-b308-e4701db916a7/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 -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2024-11-28 04:50:36,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:50:36,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:50:36,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:50:36,841 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:50:36,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:50:36,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2024-11-28 04:50:39,802 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/data/49e1db1fc/607cf802a8c34ae1bf22c5f89a233113/FLAG05ad99cfe [2024-11-28 04:50:40,066 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:50:40,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2024-11-28 04:50:40,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/data/49e1db1fc/607cf802a8c34ae1bf22c5f89a233113/FLAG05ad99cfe [2024-11-28 04:50:40,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/data/49e1db1fc/607cf802a8c34ae1bf22c5f89a233113 [2024-11-28 04:50:40,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:50:40,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:50:40,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:40,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:50:40,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:50:40,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7429e089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40, skipping insertion in model container [2024-11-28 04:50:40,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:50:40,322 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_518c52a9-cfec-4a4c-b308-e4701db916a7/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2024-11-28 04:50:40,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:40,340 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:50:40,357 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_518c52a9-cfec-4a4c-b308-e4701db916a7/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2024-11-28 04:50:40,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:50:40,374 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:50:40,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40 WrapperNode [2024-11-28 04:50:40,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:50:40,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:40,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:50:40,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:50:40,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,414 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-28 04:50:40,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:50:40,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:50:40,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:50:40,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:50:40,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,448 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 04:50:40,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,451 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:50:40,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:50:40,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:50:40,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:50:40,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (1/1) ... [2024-11-28 04:50:40,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:50:40,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:40,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:50:40,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:50:40,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:50:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:50:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:50:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:50:40,539 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-28 04:50:40,539 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-28 04:50:40,611 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:50:40,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:50:40,751 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 04:50:40,752 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:50:40,766 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:50:40,766 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:50:40,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:40 BoogieIcfgContainer [2024-11-28 04:50:40,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:50:40,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:50:40,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:50:40,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:50:40,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:40" (1/3) ... [2024-11-28 04:50:40,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55839376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:40, skipping insertion in model container [2024-11-28 04:50:40,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:40" (2/3) ... [2024-11-28 04:50:40,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55839376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:40, skipping insertion in model container [2024-11-28 04:50:40,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:40" (3/3) ... [2024-11-28 04:50:40,778 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2024-11-28 04:50:40,795 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:50:40,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_10-2.c that has 2 procedures, 20 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:50:40,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:50:40,874 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;@7b736e4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:50:40,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:50:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:50:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:50:40,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:40,889 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:40,890 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:40,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-11-28 04:50:40,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072742085] [2024-11-28 04:50:40,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,208 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 04:50:41,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:41,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072742085] [2024-11-28 04:50:41,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072742085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:41,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:41,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:50:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569544018] [2024-11-28 04:50:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:41,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:50:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:41,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:50:41,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:50:41,245 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 04:50:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:41,366 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-28 04:50:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:50:41,369 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 04:50:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:41,377 INFO L225 Difference]: With dead ends: 32 [2024-11-28 04:50:41,377 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 04:50:41,383 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 04:50:41,387 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:41,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 04:50:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-28 04:50:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 04:50:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-28 04:50:41,424 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-28 04:50:41,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:41,425 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-28 04:50:41,425 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 04:50:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-28 04:50:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:50:41,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:41,426 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:41,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:50:41,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:41,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-11-28 04:50:41,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:41,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419294765] [2024-11-28 04:50:41,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:41,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,527 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 04:50:41,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419294765] [2024-11-28 04:50:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419294765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:50:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:50:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:50:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628866338] [2024-11-28 04:50:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:50:41,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:50:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:41,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:50:41,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:50:41,529 INFO L87 Difference]: Start difference. First operand 18 states and 22 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 04:50:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:41,586 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-28 04:50:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:50:41,586 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 04:50:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:41,587 INFO L225 Difference]: With dead ends: 24 [2024-11-28 04:50:41,587 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 04:50:41,588 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 04:50:41,589 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:41,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:50:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 04:50:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-28 04:50:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 04:50:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-28 04:50:41,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-28 04:50:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:41,596 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-28 04:50:41,596 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 04:50:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-28 04:50:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:50:41,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:41,597 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:41,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:50:41,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-11-28 04:50:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963698174] [2024-11-28 04:50:41,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:50:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963698174] [2024-11-28 04:50:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963698174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:41,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780546272] [2024-11-28 04:50:41,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:41,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:41,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:41,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:41,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:50:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:41,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:50:41,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:50:42,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:50:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780546272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:42,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-28 04:50:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639761383] [2024-11-28 04:50:42,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:42,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:50:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:42,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:50:42,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:50:42,345 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 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 04:50:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:42,467 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-28 04:50:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:50:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 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 04:50:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:42,468 INFO L225 Difference]: With dead ends: 35 [2024-11-28 04:50:42,468 INFO L226 Difference]: Without dead ends: 20 [2024-11-28 04:50:42,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:50:42,470 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:42,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-28 04:50:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-28 04:50:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:50:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-28 04:50:42,477 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-28 04:50:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:42,478 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-28 04:50:42,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 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 04:50:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-28 04:50:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:50:42,479 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:42,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:42,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:50:42,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:42,683 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:42,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-11-28 04:50:42,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:42,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716666765] [2024-11-28 04:50:42,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:42,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:50:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716666765] [2024-11-28 04:50:42,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716666765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999691795] [2024-11-28 04:50:42,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:42,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:42,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:50:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:42,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:50:42,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:50:42,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:50:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999691795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:43,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:43,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-28 04:50:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857974215] [2024-11-28 04:50:43,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:43,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:50:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:43,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:50:43,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:50:43,197 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 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 04:50:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:43,332 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-28 04:50:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:50:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 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 04:50:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:43,334 INFO L225 Difference]: With dead ends: 29 [2024-11-28 04:50:43,334 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 04:50:43,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:50:43,335 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:43,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 04:50:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-28 04:50:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 04:50:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-28 04:50:43,350 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-28 04:50:43,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:43,350 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-28 04:50:43,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 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 04:50:43,351 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-28 04:50:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:50:43,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:43,352 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:43,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:43,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:43,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:43,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-11-28 04:50:43,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:43,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144008500] [2024-11-28 04:50:43,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:50:43,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:43,571 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:50:43,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:50:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144008500] [2024-11-28 04:50:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144008500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932335258] [2024-11-28 04:50:43,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:50:43,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:43,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:43,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:43,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:50:43,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:50:43,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:43,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:50:43,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:50:43,907 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:50:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932335258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:44,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2024-11-28 04:50:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059294298] [2024-11-28 04:50:44,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:44,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:50:44,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:44,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:50:44,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:50:44,373 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 04:50:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:44,639 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2024-11-28 04:50:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:50:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-28 04:50:44,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:44,641 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:50:44,641 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:50:44,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:50:44,642 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:44,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:50:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-28 04:50:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-28 04:50:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-28 04:50:44,651 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2024-11-28 04:50:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:44,651 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-28 04:50:44,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 04:50:44,652 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-28 04:50:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:50:44,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:44,654 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:44,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:44,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:44,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:44,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:44,859 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2024-11-28 04:50:44,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:44,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863651146] [2024-11-28 04:50:44,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:44,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:44,915 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:50:44,916 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 04:50:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863651146] [2024-11-28 04:50:45,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863651146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:45,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682042737] [2024-11-28 04:50:45,053 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:45,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:45,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:45,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:45,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:50:45,123 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:50:45,123 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:45,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:50:45,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 04:50:45,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-28 04:50:45,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682042737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:45,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:45,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2024-11-28 04:50:45,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090614866] [2024-11-28 04:50:45,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:45,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:50:45,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:45,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:50:45,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:50:45,723 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 04:50:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:45,848 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2024-11-28 04:50:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:50:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2024-11-28 04:50:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:45,850 INFO L225 Difference]: With dead ends: 72 [2024-11-28 04:50:45,850 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 04:50:45,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:50:45,852 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:45,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 04:50:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 04:50:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 04:50:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-28 04:50:45,865 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 93 [2024-11-28 04:50:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:45,866 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-28 04:50:45,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 04:50:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-28 04:50:45,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:50:45,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:45,868 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:45,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:50:46,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:46,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:46,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:46,070 INFO L85 PathProgramCache]: Analyzing trace with hash 366248375, now seen corresponding path program 4 times [2024-11-28 04:50:46,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18502144] [2024-11-28 04:50:46,070 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:50:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:46,086 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:50:46,086 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 04:50:46,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18502144] [2024-11-28 04:50:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18502144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:46,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732476249] [2024-11-28 04:50:46,263 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:50:46,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:46,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:46,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:50:46,325 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:50:46,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:46,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:50:46,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 127 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 04:50:46,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 22 proven. 142 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-28 04:50:47,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732476249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:47,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 13 [2024-11-28 04:50:47,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319795210] [2024-11-28 04:50:47,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:47,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:50:47,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:47,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:50:47,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:50:47,079 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 04:50:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:47,212 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-28 04:50:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:50:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 79 [2024-11-28 04:50:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:47,214 INFO L225 Difference]: With dead ends: 49 [2024-11-28 04:50:47,214 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 04:50:47,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 152 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:50:47,215 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:47,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 65 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:47,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 04:50:47,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-28 04:50:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.09375) internal successors, (35), 30 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 04:50:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-28 04:50:47,224 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 79 [2024-11-28 04:50:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:47,225 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-28 04:50:47,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 04:50:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-28 04:50:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 04:50:47,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:47,227 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 19, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:47,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:50:47,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:47,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:47,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:47,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1279375831, now seen corresponding path program 5 times [2024-11-28 04:50:47,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:47,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104107831] [2024-11-28 04:50:47,432 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:50:47,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:47,460 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:50:47,460 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 322 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2024-11-28 04:50:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104107831] [2024-11-28 04:50:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104107831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005111513] [2024-11-28 04:50:47,619 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:50:47,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:47,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:47,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:47,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:50:47,706 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 04:50:47,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:47,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:50:47,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 822 proven. 67 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-28 04:50:47,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 175 proven. 325 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-28 04:50:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005111513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:48,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:48,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-28 04:50:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866176882] [2024-11-28 04:50:48,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:48,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:50:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:48,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:50:48,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:50:48,615 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-28 04:50:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:48,871 INFO L93 Difference]: Finished difference Result 98 states and 136 transitions. [2024-11-28 04:50:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:50:48,872 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) Word has length 161 [2024-11-28 04:50:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:48,875 INFO L225 Difference]: With dead ends: 98 [2024-11-28 04:50:48,876 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 04:50:48,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 315 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:50:48,877 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:48,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 67 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:48,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 04:50:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-28 04:50:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.135135135135135) internal successors, (42), 34 states have internal predecessors, (42), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 04:50:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-28 04:50:48,888 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 161 [2024-11-28 04:50:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:48,888 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-28 04:50:48,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 7 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (17), 9 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-28 04:50:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-28 04:50:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 04:50:48,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:48,891 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:48,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:49,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:50:49,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:49,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:49,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1447005449, now seen corresponding path program 6 times [2024-11-28 04:50:49,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077918931] [2024-11-28 04:50:49,095 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:50:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:49,127 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:50:49,127 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 55 proven. 317 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-28 04:50:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:49,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077918931] [2024-11-28 04:50:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077918931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767531509] [2024-11-28 04:50:49,363 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:50:49,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:49,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:49,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:49,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:50:49,461 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 04:50:49,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:49,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:50:49,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-28 04:50:49,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 352 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-11-28 04:50:50,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767531509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:50,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:50,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-28 04:50:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39554490] [2024-11-28 04:50:50,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:50,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:50:50,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:50,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:50:50,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:50:50,701 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 04:50:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:50,837 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-28 04:50:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:50:50,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 133 [2024-11-28 04:50:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:50,840 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:50:50,840 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:50:50,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 258 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:50:50,841 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:50,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 70 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:50:50,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-28 04:50:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 37 states have internal predecessors, (45), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:50:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2024-11-28 04:50:50,862 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 133 [2024-11-28 04:50:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:50,862 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2024-11-28 04:50:50,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-28 04:50:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2024-11-28 04:50:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 04:50:50,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:50,865 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:50,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:50:51,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:50:51,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:51,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1022210831, now seen corresponding path program 7 times [2024-11-28 04:50:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:51,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412088813] [2024-11-28 04:50:51,071 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:50:51,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-28 04:50:51,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412088813] [2024-11-28 04:50:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412088813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976326425] [2024-11-28 04:50:51,498 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:50:51,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:51,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:51,500 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:51,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:50:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:51,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:50:51,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2024-11-28 04:50:51,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 756 refuted. 0 times theorem prover too weak. 1716 trivial. 0 not checked. [2024-11-28 04:50:53,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976326425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:53,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-28 04:50:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424030301] [2024-11-28 04:50:53,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:53,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:50:53,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:53,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:50:53,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:50:53,532 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 04:50:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:53,709 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2024-11-28 04:50:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:50:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 215 [2024-11-28 04:50:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:53,712 INFO L225 Difference]: With dead ends: 65 [2024-11-28 04:50:53,712 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 04:50:53,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 422 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:50:53,713 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 84 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:53,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 91 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 04:50:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-28 04:50:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 40 states have internal predecessors, (48), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (30), 13 states have call predecessors, (30), 9 states have call successors, (30) [2024-11-28 04:50:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2024-11-28 04:50:53,723 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 215 [2024-11-28 04:50:53,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:53,724 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2024-11-28 04:50:53,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 04:50:53,725 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2024-11-28 04:50:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-28 04:50:53,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:53,729 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:53,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:53,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:53,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:53,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891743, now seen corresponding path program 8 times [2024-11-28 04:50:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951566735] [2024-11-28 04:50:53,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:50:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:53,978 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:50:53,978 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2024-11-28 04:50:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951566735] [2024-11-28 04:50:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951566735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179170473] [2024-11-28 04:50:54,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:50:54,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:54,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:54,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:54,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:50:54,704 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:50:54,704 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:54,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:50:54,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2024-11-28 04:50:54,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1405 refuted. 0 times theorem prover too weak. 4430 trivial. 0 not checked. [2024-11-28 04:50:57,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179170473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:57,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:57,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2024-11-28 04:50:57,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187818021] [2024-11-28 04:50:57,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:57,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:50:57,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:57,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:50:57,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:50:57,315 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 04:50:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:57,484 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2024-11-28 04:50:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:50:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 324 [2024-11-28 04:50:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:57,487 INFO L225 Difference]: With dead ends: 70 [2024-11-28 04:50:57,487 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 04:50:57,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:50:57,488 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:57,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 99 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:50:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 04:50:57,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-28 04:50:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.108695652173913) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (41), 15 states have call predecessors, (41), 10 states have call successors, (41) [2024-11-28 04:50:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2024-11-28 04:50:57,503 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 324 [2024-11-28 04:50:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:57,504 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2024-11-28 04:50:57,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 04:50:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2024-11-28 04:50:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2024-11-28 04:50:57,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:57,511 INFO L218 NwaCegarLoop]: trace histogram [119, 119, 95, 59, 59, 59, 59, 59, 59, 59, 36, 24, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:57,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:57,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:57,715 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 55861993, now seen corresponding path program 9 times [2024-11-28 04:50:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851150030] [2024-11-28 04:50:57,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:57,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 04:50:57,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 39393 backedges. 3956 proven. 183 refuted. 0 times theorem prover too weak. 35254 trivial. 0 not checked. [2024-11-28 04:50:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851150030] [2024-11-28 04:50:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851150030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508749941] [2024-11-28 04:50:58,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:50:58,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:58,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:58,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:58,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:50:58,326 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-28 04:50:58,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:58,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:50:58,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 39393 backedges. 4253 proven. 191 refuted. 0 times theorem prover too weak. 34949 trivial. 0 not checked. [2024-11-28 04:50:58,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39393 backedges. 4255 proven. 201 refuted. 0 times theorem prover too weak. 34937 trivial. 0 not checked. [2024-11-28 04:51:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508749941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:01,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:01,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-28 04:51:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275818089] [2024-11-28 04:51:01,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:01,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:51:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:01,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:51:01,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:51:01,672 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-28 04:51:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:02,074 INFO L93 Difference]: Finished difference Result 146 states and 260 transitions. [2024-11-28 04:51:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:51:02,076 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) Word has length 813 [2024-11-28 04:51:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:02,078 INFO L225 Difference]: With dead ends: 146 [2024-11-28 04:51:02,078 INFO L226 Difference]: Without dead ends: 77 [2024-11-28 04:51:02,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1658 GetRequests, 1616 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:51:02,080 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:02,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 114 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:51:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-28 04:51:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2024-11-28 04:51:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 46 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (38), 15 states have call predecessors, (38), 11 states have call successors, (38) [2024-11-28 04:51:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2024-11-28 04:51:02,091 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 813 [2024-11-28 04:51:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:02,092 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2024-11-28 04:51:02,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 12 states have call predecessors, (22), 11 states have call successors, (22) [2024-11-28 04:51:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2024-11-28 04:51:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-28 04:51:02,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:02,096 INFO L218 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:02,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:02,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:02,300 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:02,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1322798379, now seen corresponding path program 10 times [2024-11-28 04:51:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006079949] [2024-11-28 04:51:02,301 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:02,388 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:02,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 422 proven. 2921 refuted. 0 times theorem prover too weak. 15760 trivial. 0 not checked. [2024-11-28 04:51:03,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006079949] [2024-11-28 04:51:03,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006079949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883494217] [2024-11-28 04:51:03,059 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:03,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:03,061 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:03,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:51:03,318 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:03,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:03,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:51:03,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 422 proven. 2921 refuted. 0 times theorem prover too weak. 15760 trivial. 0 not checked. [2024-11-28 04:51:03,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 422 proven. 2998 refuted. 0 times theorem prover too weak. 15683 trivial. 0 not checked. [2024-11-28 04:51:07,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883494217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:07,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:07,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2024-11-28 04:51:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707834331] [2024-11-28 04:51:07,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:07,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:51:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:07,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:51:07,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:51:07,213 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 21 states have internal predecessors, (64), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-28 04:51:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:07,436 INFO L93 Difference]: Finished difference Result 78 states and 121 transitions. [2024-11-28 04:51:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:51:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 21 states have internal predecessors, (64), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) Word has length 569 [2024-11-28 04:51:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:07,439 INFO L225 Difference]: With dead ends: 78 [2024-11-28 04:51:07,439 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 04:51:07,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1162 GetRequests, 1128 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:51:07,440 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:07,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 107 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 04:51:07,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-28 04:51:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 49 states have internal predecessors, (55), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (50), 17 states have call predecessors, (50), 12 states have call successors, (50) [2024-11-28 04:51:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 117 transitions. [2024-11-28 04:51:07,452 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 117 transitions. Word has length 569 [2024-11-28 04:51:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:07,454 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 117 transitions. [2024-11-28 04:51:07,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 21 states have internal predecessors, (64), 18 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 9 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-28 04:51:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2024-11-28 04:51:07,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-28 04:51:07,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:07,463 INFO L218 NwaCegarLoop]: trace histogram [155, 155, 125, 77, 77, 77, 77, 77, 77, 77, 48, 30, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:07,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:51:07,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:51:07,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:07,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:07,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2044273265, now seen corresponding path program 11 times [2024-11-28 04:51:07,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:07,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114554198] [2024-11-28 04:51:07,665 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:51:07,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:07,718 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:51:07,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 1534 proven. 3935 refuted. 0 times theorem prover too weak. 61725 trivial. 0 not checked. [2024-11-28 04:51:07,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:07,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114554198] [2024-11-28 04:51:07,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114554198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:07,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319827258] [2024-11-28 04:51:07,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:51:07,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:07,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:07,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:51:08,164 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2024-11-28 04:51:08,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:08,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:51:08,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 21509 proven. 73 refuted. 0 times theorem prover too weak. 45612 trivial. 0 not checked. [2024-11-28 04:51:08,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 1628 proven. 4523 refuted. 0 times theorem prover too weak. 61043 trivial. 0 not checked. [2024-11-28 04:51:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319827258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:12,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:12,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 13] total 19 [2024-11-28 04:51:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240577109] [2024-11-28 04:51:12,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:12,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:51:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:12,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:51:12,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:51:12,016 INFO L87 Difference]: Start difference. First operand 74 states and 117 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2024-11-28 04:51:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:12,203 INFO L93 Difference]: Finished difference Result 150 states and 266 transitions. [2024-11-28 04:51:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:51:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) Word has length 1059 [2024-11-28 04:51:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:12,206 INFO L225 Difference]: With dead ends: 150 [2024-11-28 04:51:12,206 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:51:12,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2137 GetRequests, 2106 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:51:12,207 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:12,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 95 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:51:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-28 04:51:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 49 states have internal predecessors, (55), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (45), 17 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-28 04:51:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 112 transitions. [2024-11-28 04:51:12,219 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 112 transitions. Word has length 1059 [2024-11-28 04:51:12,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:12,220 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 112 transitions. [2024-11-28 04:51:12,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 11 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (24), 10 states have call predecessors, (24), 11 states have call successors, (24) [2024-11-28 04:51:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 112 transitions. [2024-11-28 04:51:12,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2024-11-28 04:51:12,229 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:12,229 INFO L218 NwaCegarLoop]: trace histogram [153, 153, 124, 76, 76, 76, 76, 76, 76, 76, 48, 29, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:12,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:51:12,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:51:12,430 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:12,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1469003118, now seen corresponding path program 12 times [2024-11-28 04:51:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:12,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540498320] [2024-11-28 04:51:12,431 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:51:12,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:12,529 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-11-28 04:51:12,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 65538 backedges. 1675 proven. 4784 refuted. 0 times theorem prover too weak. 59079 trivial. 0 not checked. [2024-11-28 04:51:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540498320] [2024-11-28 04:51:12,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540498320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:12,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505031800] [2024-11-28 04:51:12,887 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:51:12,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:12,890 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:12,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:51:13,214 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-11-28 04:51:13,214 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:13,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:51:13,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 65538 backedges. 1675 proven. 4784 refuted. 0 times theorem prover too weak. 59079 trivial. 0 not checked. [2024-11-28 04:51:13,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 65538 backedges. 1683 proven. 4853 refuted. 0 times theorem prover too weak. 59002 trivial. 0 not checked. [2024-11-28 04:51:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505031800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:18,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:18,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 20 [2024-11-28 04:51:18,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704971748] [2024-11-28 04:51:18,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:18,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:51:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:18,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:51:18,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:51:18,310 INFO L87 Difference]: Start difference. First operand 74 states and 112 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 16 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 11 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-28 04:51:18,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:18,502 INFO L93 Difference]: Finished difference Result 91 states and 161 transitions. [2024-11-28 04:51:18,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:51:18,502 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 16 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 11 states have call predecessors, (25), 16 states have call successors, (25) Word has length 1046 [2024-11-28 04:51:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:18,508 INFO L225 Difference]: With dead ends: 91 [2024-11-28 04:51:18,508 INFO L226 Difference]: Without dead ends: 87 [2024-11-28 04:51:18,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2116 GetRequests, 2082 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=467, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:51:18,511 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:18,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 90 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:51:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-28 04:51:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 74. [2024-11-28 04:51:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 49 states have internal predecessors, (55), 12 states have call successors, (12), 7 states have call predecessors, (12), 10 states have return successors, (45), 17 states have call predecessors, (45), 12 states have call successors, (45) [2024-11-28 04:51:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 112 transitions. [2024-11-28 04:51:18,532 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 112 transitions. Word has length 1046 [2024-11-28 04:51:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:18,536 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 112 transitions. [2024-11-28 04:51:18,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 16 states have call successors, (19), 1 states have call predecessors, (19), 9 states have return successors, (25), 11 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-28 04:51:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 112 transitions. [2024-11-28 04:51:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-11-28 04:51:18,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:18,546 INFO L218 NwaCegarLoop]: trace histogram [155, 155, 125, 77, 77, 77, 77, 77, 77, 77, 48, 30, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:18,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:51:18,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:18,751 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:18,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 799784779, now seen corresponding path program 13 times [2024-11-28 04:51:18,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650595860] [2024-11-28 04:51:18,752 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:51:18,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 935 proven. 6415 refuted. 0 times theorem prover too weak. 59844 trivial. 0 not checked. [2024-11-28 04:51:20,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650595860] [2024-11-28 04:51:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650595860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714883143] [2024-11-28 04:51:20,927 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:51:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:20,929 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:20,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:51:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:21,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 2370 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:51:21,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 935 proven. 6415 refuted. 0 times theorem prover too weak. 59844 trivial. 0 not checked. [2024-11-28 04:51:21,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 67194 backedges. 935 proven. 6515 refuted. 0 times theorem prover too weak. 59744 trivial. 0 not checked. [2024-11-28 04:51:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714883143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:27,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 22 [2024-11-28 04:51:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586729278] [2024-11-28 04:51:27,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:27,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:51:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:27,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:51:27,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:51:27,108 INFO L87 Difference]: Start difference. First operand 74 states and 112 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 19 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (27), 10 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-28 04:51:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:27,394 INFO L93 Difference]: Finished difference Result 96 states and 183 transitions. [2024-11-28 04:51:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:51:27,394 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 19 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (27), 10 states have call predecessors, (27), 19 states have call successors, (27) Word has length 1059 [2024-11-28 04:51:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:27,400 INFO L225 Difference]: With dead ends: 96 [2024-11-28 04:51:27,400 INFO L226 Difference]: Without dead ends: 92 [2024-11-28 04:51:27,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2145 GetRequests, 2107 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:51:27,402 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:27,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 98 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:51:27,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-28 04:51:27,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2024-11-28 04:51:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 52 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 11 states have return successors, (58), 19 states have call predecessors, (58), 13 states have call successors, (58) [2024-11-28 04:51:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 129 transitions. [2024-11-28 04:51:27,423 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 129 transitions. Word has length 1059 [2024-11-28 04:51:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:27,425 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 129 transitions. [2024-11-28 04:51:27,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 19 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (27), 10 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-28 04:51:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 129 transitions. [2024-11-28 04:51:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2024-11-28 04:51:27,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:27,448 INFO L218 NwaCegarLoop]: trace histogram [255, 255, 206, 127, 127, 127, 127, 127, 127, 127, 79, 49, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:27,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:51:27,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:51:27,648 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:27,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash -476723529, now seen corresponding path program 14 times [2024-11-28 04:51:27,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:27,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229517068] [2024-11-28 04:51:27,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:27,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:28,070 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:28,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 182659 backedges. 3975 proven. 7504 refuted. 0 times theorem prover too weak. 171180 trivial. 0 not checked. [2024-11-28 04:51:31,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229517068] [2024-11-28 04:51:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229517068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969180792] [2024-11-28 04:51:31,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:51:31,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:31,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:31,617 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:31,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:51:32,325 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:51:32,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:32,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 3882 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:51:32,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 182659 backedges. 4610 proven. 9155 refuted. 0 times theorem prover too weak. 168894 trivial. 0 not checked. [2024-11-28 04:51:32,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 182659 backedges. 4612 proven. 9270 refuted. 0 times theorem prover too weak. 168777 trivial. 0 not checked. [2024-11-28 04:51:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969180792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:41,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:41,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 27 [2024-11-28 04:51:41,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395657669] [2024-11-28 04:51:41,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:41,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:51:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:41,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:51:41,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:51:41,602 INFO L87 Difference]: Start difference. First operand 79 states and 129 transitions. Second operand has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (34), 14 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 04:51:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:41,886 INFO L93 Difference]: Finished difference Result 149 states and 471 transitions. [2024-11-28 04:51:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:51:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (34), 14 states have call predecessors, (34), 21 states have call successors, (34) Word has length 1740 [2024-11-28 04:51:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:41,892 INFO L225 Difference]: With dead ends: 149 [2024-11-28 04:51:41,892 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 04:51:41,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3508 GetRequests, 3463 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=831, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:51:41,895 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:41,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 207 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:51:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 04:51:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-28 04:51:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 67 states have internal predecessors, (73), 16 states have call successors, (16), 7 states have call predecessors, (16), 17 states have return successors, (89), 28 states have call predecessors, (89), 16 states have call successors, (89) [2024-11-28 04:51:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 178 transitions. [2024-11-28 04:51:41,915 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 178 transitions. Word has length 1740 [2024-11-28 04:51:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 178 transitions. [2024-11-28 04:51:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (34), 14 states have call predecessors, (34), 21 states have call successors, (34) [2024-11-28 04:51:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 178 transitions. [2024-11-28 04:51:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1456 [2024-11-28 04:51:41,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:41,934 INFO L218 NwaCegarLoop]: trace histogram [213, 213, 173, 106, 106, 106, 106, 106, 106, 106, 67, 40, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:41,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:51:42,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:51:42,135 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:42,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1336893174, now seen corresponding path program 15 times [2024-11-28 04:51:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656435826] [2024-11-28 04:51:42,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:51:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:42,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-11-28 04:51:42,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 127450 backedges. 7110 proven. 565 refuted. 0 times theorem prover too weak. 119775 trivial. 0 not checked. [2024-11-28 04:51:42,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656435826] [2024-11-28 04:51:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656435826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:42,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940024592] [2024-11-28 04:51:42,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:51:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:42,497 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:42,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:51:42,963 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2024-11-28 04:51:42,963 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:42,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:51:42,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:43,072 INFO L134 CoverageAnalysis]: Checked inductivity of 127450 backedges. 23425 proven. 123 refuted. 0 times theorem prover too weak. 103902 trivial. 0 not checked. [2024-11-28 04:51:43,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 127450 backedges. 7114 proven. 568 refuted. 0 times theorem prover too weak. 119768 trivial. 0 not checked. [2024-11-28 04:51:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940024592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:47,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 17 [2024-11-28 04:51:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944604034] [2024-11-28 04:51:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:47,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:51:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:47,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:51:47,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:51:47,538 INFO L87 Difference]: Start difference. First operand 103 states and 178 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-28 04:51:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:47,781 INFO L93 Difference]: Finished difference Result 202 states and 374 transitions. [2024-11-28 04:51:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:51:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) Word has length 1455 [2024-11-28 04:51:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:47,785 INFO L225 Difference]: With dead ends: 202 [2024-11-28 04:51:47,785 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 04:51:47,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2929 GetRequests, 2900 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:51:47,788 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:47,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 114 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:51:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 04:51:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-11-28 04:51:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.0625) internal successors, (68), 62 states have internal predecessors, (68), 15 states have call successors, (15), 8 states have call predecessors, (15), 14 states have return successors, (60), 23 states have call predecessors, (60), 15 states have call successors, (60) [2024-11-28 04:51:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 143 transitions. [2024-11-28 04:51:47,804 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 143 transitions. Word has length 1455 [2024-11-28 04:51:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:47,805 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 143 transitions. [2024-11-28 04:51:47,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 8 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-28 04:51:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 143 transitions. [2024-11-28 04:51:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2024-11-28 04:51:47,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:47,827 INFO L218 NwaCegarLoop]: trace histogram [251, 251, 203, 125, 125, 125, 125, 125, 125, 125, 78, 48, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:51:47,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:51:48,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:51:48,028 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:48,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:48,028 INFO L85 PathProgramCache]: Analyzing trace with hash 215593033, now seen corresponding path program 16 times [2024-11-28 04:51:48,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:48,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553324485] [2024-11-28 04:51:48,028 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:48,283 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:48,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 177003 backedges. 2029 proven. 10631 refuted. 0 times theorem prover too weak. 164343 trivial. 0 not checked. [2024-11-28 04:51:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553324485] [2024-11-28 04:51:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553324485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:51:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302636195] [2024-11-28 04:51:51,221 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:51:51,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:51:51,222 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:51:51,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:51:51,924 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:51:51,925 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:51:51,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:51:51,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:51:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 177003 backedges. 2090 proven. 11453 refuted. 0 times theorem prover too weak. 163460 trivial. 0 not checked. [2024-11-28 04:51:52,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 177003 backedges. 2098 proven. 11562 refuted. 0 times theorem prover too weak. 163343 trivial. 0 not checked. [2024-11-28 04:52:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302636195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:00,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:00,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 23] total 27 [2024-11-28 04:52:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217781175] [2024-11-28 04:52:00,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:00,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:52:00,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:00,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:52:00,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:52:00,890 INFO L87 Difference]: Start difference. First operand 94 states and 143 transitions. Second operand has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (33), 14 states have call predecessors, (33), 21 states have call successors, (33) [2024-11-28 04:52:01,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:01,162 INFO L93 Difference]: Finished difference Result 168 states and 303 transitions. [2024-11-28 04:52:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:52:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (33), 14 states have call predecessors, (33), 21 states have call successors, (33) Word has length 1713 [2024-11-28 04:52:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:01,167 INFO L225 Difference]: With dead ends: 168 [2024-11-28 04:52:01,167 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 04:52:01,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3456 GetRequests, 3411 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=831, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:52:01,171 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:01,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 183 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:52:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 04:52:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-11-28 04:52:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.0625) internal successors, (68), 62 states have internal predecessors, (68), 15 states have call successors, (15), 8 states have call predecessors, (15), 14 states have return successors, (39), 23 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-28 04:52:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2024-11-28 04:52:01,186 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 1713 [2024-11-28 04:52:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:01,186 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2024-11-28 04:52:01,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (33), 14 states have call predecessors, (33), 21 states have call successors, (33) [2024-11-28 04:52:01,186 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2024-11-28 04:52:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2024-11-28 04:52:01,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:01,201 INFO L218 NwaCegarLoop]: trace histogram [197, 197, 159, 98, 98, 98, 98, 98, 98, 98, 61, 38, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:01,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:52:01,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:01,402 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:01,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash 839528130, now seen corresponding path program 17 times [2024-11-28 04:52:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607787536] [2024-11-28 04:52:01,402 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:52:01,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:01,668 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2024-11-28 04:52:01,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 108797 backedges. 9907 proven. 3433 refuted. 0 times theorem prover too weak. 95457 trivial. 0 not checked. [2024-11-28 04:52:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607787536] [2024-11-28 04:52:03,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607787536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272870720] [2024-11-28 04:52:03,605 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:52:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:03,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:03,607 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:03,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:52:04,584 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2024-11-28 04:52:04,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:04,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:52:04,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 108797 backedges. 34195 proven. 1855 refuted. 0 times theorem prover too weak. 72747 trivial. 0 not checked. [2024-11-28 04:52:04,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 108797 backedges. 10421 proven. 3660 refuted. 0 times theorem prover too weak. 94716 trivial. 0 not checked. [2024-11-28 04:52:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272870720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:12,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 27] total 35 [2024-11-28 04:52:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540923394] [2024-11-28 04:52:12,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:12,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:52:12,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:12,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:52:12,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:52:12,405 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 28 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (44), 15 states have call predecessors, (44), 28 states have call successors, (44) [2024-11-28 04:52:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:12,994 INFO L93 Difference]: Finished difference Result 226 states and 374 transitions. [2024-11-28 04:52:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 04:52:12,995 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 28 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (44), 15 states have call predecessors, (44), 28 states have call successors, (44) Word has length 1345 [2024-11-28 04:52:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:12,997 INFO L225 Difference]: With dead ends: 226 [2024-11-28 04:52:12,997 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 04:52:13,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2742 GetRequests, 2670 SyntacticMatches, 13 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=895, Invalid=2765, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:52:13,001 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 240 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:13,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 183 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:52:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 04:52:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2024-11-28 04:52:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 77 states have internal predecessors, (81), 20 states have call successors, (20), 13 states have call predecessors, (20), 14 states have return successors, (44), 23 states have call predecessors, (44), 20 states have call successors, (44) [2024-11-28 04:52:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2024-11-28 04:52:13,022 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 1345 [2024-11-28 04:52:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:13,023 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2024-11-28 04:52:13,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.2058823529411766) internal successors, (109), 35 states have internal predecessors, (109), 28 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (44), 15 states have call predecessors, (44), 28 states have call successors, (44) [2024-11-28 04:52:13,023 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2024-11-28 04:52:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2024-11-28 04:52:13,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:13,035 INFO L218 NwaCegarLoop]: trace histogram [187, 187, 151, 93, 93, 93, 93, 93, 93, 93, 58, 36, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:13,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:52:13,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:13,236 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:13,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -258565353, now seen corresponding path program 18 times [2024-11-28 04:52:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869266277] [2024-11-28 04:52:13,237 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:52:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:13,672 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2024-11-28 04:52:13,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 6317 proven. 1780 refuted. 0 times theorem prover too weak. 89904 trivial. 0 not checked. [2024-11-28 04:52:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869266277] [2024-11-28 04:52:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869266277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361828306] [2024-11-28 04:52:15,297 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:52:15,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:15,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:15,299 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:15,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:52:16,588 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2024-11-28 04:52:16,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:16,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:52:16,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 39139 proven. 296 refuted. 0 times theorem prover too weak. 58566 trivial. 0 not checked. [2024-11-28 04:52:16,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 98001 backedges. 6910 proven. 2020 refuted. 0 times theorem prover too weak. 89071 trivial. 0 not checked. [2024-11-28 04:52:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361828306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:21,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:21,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 23 [2024-11-28 04:52:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25183593] [2024-11-28 04:52:21,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:52:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:21,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:52:21,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:52:21,446 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 13 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-11-28 04:52:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:21,749 INFO L93 Difference]: Finished difference Result 229 states and 296 transitions. [2024-11-28 04:52:21,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:52:21,750 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 13 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) Word has length 1277 [2024-11-28 04:52:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:21,752 INFO L225 Difference]: With dead ends: 229 [2024-11-28 04:52:21,753 INFO L226 Difference]: Without dead ends: 113 [2024-11-28 04:52:21,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2582 GetRequests, 2540 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=342, Invalid=918, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:52:21,755 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:21,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 141 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:52:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-28 04:52:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-28 04:52:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 70 states have internal predecessors, (74), 19 states have call successors, (19), 13 states have call predecessors, (19), 11 states have return successors, (31), 19 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-28 04:52:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2024-11-28 04:52:21,767 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 1277 [2024-11-28 04:52:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:21,769 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2024-11-28 04:52:21,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 13 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (30), 14 states have call predecessors, (30), 13 states have call successors, (30) [2024-11-28 04:52:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2024-11-28 04:52:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2024-11-28 04:52:21,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:21,780 INFO L218 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:21,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:52:21,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:21,981 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:21,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash 15284780, now seen corresponding path program 19 times [2024-11-28 04:52:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426796233] [2024-11-28 04:52:21,982 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:52:21,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 0 proven. 28921 refuted. 0 times theorem prover too weak. 58848 trivial. 0 not checked. [2024-11-28 04:53:11,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:11,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426796233] [2024-11-28 04:53:11,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426796233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:11,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442066853] [2024-11-28 04:53:11,825 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:53:11,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:11,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:11,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:53:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:12,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 711 conjuncts are in the unsatisfiable core [2024-11-28 04:53:12,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 0 proven. 28921 refuted. 0 times theorem prover too weak. 58848 trivial. 0 not checked. [2024-11-28 04:53:13,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 87769 backedges. 0 proven. 28921 refuted. 0 times theorem prover too weak. 58848 trivial. 0 not checked. [2024-11-28 04:53:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442066853] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:53:21,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:53:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 40 [2024-11-28 04:53:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861856421] [2024-11-28 04:53:21,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:53:21,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:53:21,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:21,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:53:21,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:53:21,964 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 04:53:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:22,372 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2024-11-28 04:53:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:53:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) Word has length 1209 [2024-11-28 04:53:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:22,374 INFO L225 Difference]: With dead ends: 103 [2024-11-28 04:53:22,374 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:53:22,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2773 GetRequests, 2735 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:53:22,377 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:22,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1140 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:53:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:53:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:53:22,378 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 04:53:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:53:22,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1209 [2024-11-28 04:53:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:22,378 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:53:22,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 21 states have internal predecessors, (46), 9 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (27), 27 states have call predecessors, (27), 9 states have call successors, (27) [2024-11-28 04:53:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:53:22,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:53:22,382 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:53:22,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:53:22,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:53:22,589 INFO L422 BasicCegarLoop]: Path program histogram: [19, 1, 1, 1] [2024-11-28 04:53:22,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:53:34,131 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:53:34,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:53:34 BoogieIcfgContainer [2024-11-28 04:53:34,138 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:53:34,139 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:53:34,139 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:53:34,139 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:53:34,140 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:40" (3/4) ... [2024-11-28 04:53:34,143 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:53:34,148 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-28 04:53:34,151 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 04:53:34,151 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:53:34,152 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:53:34,152 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:53:34,227 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:53:34,228 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:53:34,228 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:53:34,230 INFO L158 Benchmark]: Toolchain (without parser) took 174118.27ms. Allocated memory was 117.4MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 93.1MB in the beginning and 1.1GB in the end (delta: -979.8MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-28 04:53:34,230 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:34,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.40ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:53:34,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.53ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:34,233 INFO L158 Benchmark]: Boogie Preprocessor took 44.39ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 897.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:34,236 INFO L158 Benchmark]: RCFGBuilder took 305.78ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:53:34,236 INFO L158 Benchmark]: TraceAbstraction took 173369.25ms. Allocated memory was 117.4MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 70.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-28 04:53:34,236 INFO L158 Benchmark]: Witness Printer took 88.72ms. Allocated memory is still 2.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:53:34,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.40ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.53ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.39ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 897.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.78ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 173369.25ms. Allocated memory was 117.4MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 70.6MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 88.72ms. Allocated memory is still 2.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: 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 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 161.7s, OverallIterations: 22, TraceHistogramMax: 255, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.2s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1077 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 988 mSDsluCounter, 3225 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2774 mSDsCounter, 1034 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3809 IncrementalHoareTripleChecker+Invalid, 4843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1034 mSolverCounterUnsat, 451 mSDtfsCounter, 3809 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29528 GetRequests, 28879 SyntacticMatches, 127 SemanticMatches, 522 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3938 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=20, InterpolantAutomatonStates: 307, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 88 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 141.8s InterpolantComputationTime, 28769 NumberOfCodeBlocks, 19899 NumberOfCodeBlocksAsserted, 818 NumberOfCheckSat, 43081 ConstructedInterpolants, 0 QuantifiedInterpolants, 54262 SizeOfPredicates, 98 NumberOfNonLiveVariables, 22064 ConjunctsInSsa, 981 ConjunctsInUnsatCore, 62 InterpolantComputations, 2 PerfectInterpolantSequences, 2934665/3155553 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 04:53:34,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_518c52a9-cfec-4a4c-b308-e4701db916a7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE