./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.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_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/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_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/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_dacbcd44-0d54-4dd2-b98f-74657f730474/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 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:57:12,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:57:12,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:57:12,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:57:12,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:57:12,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:57:12,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:57:12,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:57:12,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:57:12,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:57:12,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:57:12,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:57:12,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:57:12,338 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:57:12,338 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:57:12,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:57:12,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:57:12,340 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:57:12,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:57:12,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:57:12,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:57:12,341 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:57:12,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:57:12,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:57:12,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:57:12,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:57:12,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:57:12,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:57:12,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:57:12,344 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_dacbcd44-0d54-4dd2-b98f-74657f730474/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 -> 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 [2024-11-28 04:57:12,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:57:12,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:57:12,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:57:12,739 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:57:12,739 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:57:12,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2024-11-28 04:57:15,814 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/data/8a374f8fd/441e070fbbe8470584163fc2bb524456/FLAGd6cecaf8b [2024-11-28 04:57:16,073 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:57:16,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2024-11-28 04:57:16,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/data/8a374f8fd/441e070fbbe8470584163fc2bb524456/FLAGd6cecaf8b [2024-11-28 04:57:16,128 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/data/8a374f8fd/441e070fbbe8470584163fc2bb524456 [2024-11-28 04:57:16,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:57:16,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:57:16,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:57:16,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:57:16,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:57:16,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190002dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16, skipping insertion in model container [2024-11-28 04:57:16,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:57:16,346 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_dacbcd44-0d54-4dd2-b98f-74657f730474/sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c[319,332] [2024-11-28 04:57:16,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:57:16,381 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:57:16,392 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_dacbcd44-0d54-4dd2-b98f-74657f730474/sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c[319,332] [2024-11-28 04:57:16,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:57:16,413 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:57:16,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16 WrapperNode [2024-11-28 04:57:16,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:57:16,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:57:16,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:57:16,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:57:16,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,454 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2024-11-28 04:57:16,454 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:57:16,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:57:16,455 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:57:16,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:57:16,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,479 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 04:57:16,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,488 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:57:16,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:57:16,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:57:16,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:57:16,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (1/1) ... [2024-11-28 04:57:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:57:16,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:16,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:57:16,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:57:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:57:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:57:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:57:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:57:16,647 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:57:16,651 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:57:16,828 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-28 04:57:16,828 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:57:16,844 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:57:16,844 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:57:16,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:16 BoogieIcfgContainer [2024-11-28 04:57:16,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:57:16,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:57:16,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:57:16,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:57:16,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:57:16" (1/3) ... [2024-11-28 04:57:16,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d468eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:16, skipping insertion in model container [2024-11-28 04:57:16,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:57:16" (2/3) ... [2024-11-28 04:57:16,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d468eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:57:16, skipping insertion in model container [2024-11-28 04:57:16,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:57:16" (3/3) ... [2024-11-28 04:57:16,865 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.c [2024-11-28 04:57:16,886 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:57:16,888 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_13.c that has 1 procedures, 14 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:57:16,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:57:16,985 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;@3146c7b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:57:16,985 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:57:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 04:57:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 04:57:16,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:16,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:16,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:17,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1818452760, now seen corresponding path program 1 times [2024-11-28 04:57:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:17,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972412809] [2024-11-28 04:57:17,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:17,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:17,190 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 04:57:17,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:17,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972412809] [2024-11-28 04:57:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972412809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:17,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:17,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:57:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436050966] [2024-11-28 04:57:17,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:17,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:57:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:17,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:57:17,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:57:17,231 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:57:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:17,245 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2024-11-28 04:57:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:57:17,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 04:57:17,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:17,256 INFO L225 Difference]: With dead ends: 24 [2024-11-28 04:57:17,256 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 04:57:17,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:57:17,263 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:17,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:57:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 04:57:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-28 04:57:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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 04:57:17,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-11-28 04:57:17,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2024-11-28 04:57:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:17,301 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-28 04:57:17,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:57:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2024-11-28 04:57:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 04:57:17,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:17,302 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:17,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:57:17,302 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:17,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:17,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1810141071, now seen corresponding path program 1 times [2024-11-28 04:57:17,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:17,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754333370] [2024-11-28 04:57:17,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:17,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:17,459 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 04:57:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754333370] [2024-11-28 04:57:17,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754333370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:17,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:57:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508405075] [2024-11-28 04:57:17,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:17,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:57:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:17,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:57:17,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:57:17,462 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:57:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:17,508 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2024-11-28 04:57:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:57:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 04:57:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:17,512 INFO L225 Difference]: With dead ends: 20 [2024-11-28 04:57:17,512 INFO L226 Difference]: Without dead ends: 12 [2024-11-28 04:57:17,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:57:17,514 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:17,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:57:17,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-28 04:57:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-28 04:57:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 04:57:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-28 04:57:17,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2024-11-28 04:57:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:17,523 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-28 04:57:17,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:57:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2024-11-28 04:57:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:57:17,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:17,526 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:17,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:57:17,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:17,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2084884727, now seen corresponding path program 1 times [2024-11-28 04:57:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565712894] [2024-11-28 04:57:17,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:17,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565712894] [2024-11-28 04:57:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565712894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:17,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984730889] [2024-11-28 04:57:17,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:17,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:17,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:17,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:57:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:17,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:57:17,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:17,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984730889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:17,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:57:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493524226] [2024-11-28 04:57:17,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:17,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:57:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:17,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:57:17,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:57:17,942 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 04:57:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:18,004 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2024-11-28 04:57:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:57:18,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:57:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:18,006 INFO L225 Difference]: With dead ends: 24 [2024-11-28 04:57:18,006 INFO L226 Difference]: Without dead ends: 16 [2024-11-28 04:57:18,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:57:18,035 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:18,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:57:18,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-28 04:57:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-28 04:57:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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 04:57:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-28 04:57:18,044 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2024-11-28 04:57:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:18,044 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-28 04:57:18,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 04:57:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-28 04:57:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:57:18,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:18,045 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:18,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:57:18,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:18,245 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:18,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:18,246 INFO L85 PathProgramCache]: Analyzing trace with hash 133684155, now seen corresponding path program 1 times [2024-11-28 04:57:18,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:18,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609904738] [2024-11-28 04:57:18,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:18,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609904738] [2024-11-28 04:57:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609904738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839250535] [2024-11-28 04:57:18,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:18,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:18,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:18,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:18,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:57:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:18,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:57:18,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:18,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:57:18,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839250535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:18,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 04:57:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105901345] [2024-11-28 04:57:18,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:18,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:57:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:18,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:57:18,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:57:18,590 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 04:57:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:18,654 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-28 04:57:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:57:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 04:57:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:18,655 INFO L225 Difference]: With dead ends: 32 [2024-11-28 04:57:18,656 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 04:57:18,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:57:18,657 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:18,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:57:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 04:57:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 04:57:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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 04:57:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-28 04:57:18,663 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2024-11-28 04:57:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:18,663 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-28 04:57:18,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 04:57:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-28 04:57:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 04:57:18,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:18,664 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:18,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:18,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:18,868 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:18,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2111980707, now seen corresponding path program 2 times [2024-11-28 04:57:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:18,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047664982] [2024-11-28 04:57:18,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:57:18,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:18,917 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:57:18,917 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:57:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:19,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047664982] [2024-11-28 04:57:19,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047664982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:19,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:19,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:57:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321585331] [2024-11-28 04:57:19,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:19,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:57:19,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:19,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:57:19,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:19,083 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 04:57:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:19,113 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-28 04:57:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:57:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 04:57:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:19,115 INFO L225 Difference]: With dead ends: 33 [2024-11-28 04:57:19,115 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 04:57:19,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:57:19,116 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:19,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:57:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 04:57:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2024-11-28 04:57:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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 04:57:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-28 04:57:19,125 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2024-11-28 04:57:19,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:19,126 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-28 04:57:19,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 04:57:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-28 04:57:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:57:19,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:19,127 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:19,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:57:19,127 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:19,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -846817173, now seen corresponding path program 1 times [2024-11-28 04:57:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340079168] [2024-11-28 04:57:19,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:19,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340079168] [2024-11-28 04:57:19,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340079168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213489689] [2024-11-28 04:57:19,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:19,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:19,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:19,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:19,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:57:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:19,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:57:19,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:19,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:19,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213489689] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:19,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:19,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 04:57:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577109265] [2024-11-28 04:57:19,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:19,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:57:19,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:19,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:57:19,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:57:19,759 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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 04:57:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:19,857 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2024-11-28 04:57:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:57:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 04:57:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:19,859 INFO L225 Difference]: With dead ends: 54 [2024-11-28 04:57:19,859 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 04:57:19,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:57:19,860 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:19,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:57:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 04:57:19,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-28 04:57:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 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 04:57:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-28 04:57:19,874 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 25 [2024-11-28 04:57:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:19,875 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-28 04:57:19,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 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 04:57:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-28 04:57:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:57:19,876 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:19,876 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:19,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:57:20,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:57:20,076 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:20,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 18336315, now seen corresponding path program 2 times [2024-11-28 04:57:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329828408] [2024-11-28 04:57:20,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:57:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:20,119 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:57:20,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329828408] [2024-11-28 04:57:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329828408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422728021] [2024-11-28 04:57:20,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:57:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:20,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:20,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:57:20,745 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:57:20,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:20,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:57:20,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:20,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:57:21,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422728021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:21,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-28 04:57:21,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136280637] [2024-11-28 04:57:21,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:21,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:57:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:21,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:57:21,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:57:21,555 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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 04:57:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:21,717 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2024-11-28 04:57:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:57:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 04:57:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:21,719 INFO L225 Difference]: With dead ends: 86 [2024-11-28 04:57:21,719 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 04:57:21,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:57:21,721 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:21,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:57:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 04:57:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-28 04:57:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 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 04:57:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2024-11-28 04:57:21,739 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 41 [2024-11-28 04:57:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:21,739 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2024-11-28 04:57:21,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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 04:57:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2024-11-28 04:57:21,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:57:21,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:21,742 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:21,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:21,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:57:21,947 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:21,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 973163995, now seen corresponding path program 3 times [2024-11-28 04:57:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534850913] [2024-11-28 04:57:21,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:57:21,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:21,974 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:57:21,974 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-28 04:57:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534850913] [2024-11-28 04:57:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534850913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619113375] [2024-11-28 04:57:22,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:57:22,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:22,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:22,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:22,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:57:22,128 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:57:22,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:22,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:57:22,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-28 04:57:22,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 31 proven. 4 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-28 04:57:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619113375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:22,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:22,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:57:22,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411645607] [2024-11-28 04:57:22,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:22,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:57:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:22,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:57:22,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:57:22,778 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 04:57:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:22,829 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2024-11-28 04:57:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:57:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-28 04:57:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:22,831 INFO L225 Difference]: With dead ends: 88 [2024-11-28 04:57:22,831 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 04:57:22,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:57:22,832 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:22,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:57:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 04:57:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-28 04:57:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:57:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2024-11-28 04:57:22,850 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 73 [2024-11-28 04:57:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:22,850 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2024-11-28 04:57:22,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 04:57:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2024-11-28 04:57:22,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 04:57:22,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:22,853 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:22,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:57:23,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:57:23,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:23,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1271535979, now seen corresponding path program 4 times [2024-11-28 04:57:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834214452] [2024-11-28 04:57:23,054 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:57:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:23,099 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:57:23,099 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2024-11-28 04:57:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834214452] [2024-11-28 04:57:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834214452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902019553] [2024-11-28 04:57:23,369 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:57:23,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:23,372 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:23,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:57:23,479 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:57:23,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:23,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:57:23,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:57:24,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:57:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902019553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:26,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:26,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 71 [2024-11-28 04:57:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605286503] [2024-11-28 04:57:26,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:26,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-28 04:57:26,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:26,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-28 04:57:26,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2051, Invalid=2919, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:57:26,464 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 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 04:57:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:29,272 INFO L93 Difference]: Finished difference Result 171 states and 209 transitions. [2024-11-28 04:57:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 04:57:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-28 04:57:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:29,274 INFO L225 Difference]: With dead ends: 171 [2024-11-28 04:57:29,274 INFO L226 Difference]: Without dead ends: 151 [2024-11-28 04:57:29,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=6329, Invalid=11227, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 04:57:29,283 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:29,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 49 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:57:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-28 04:57:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2024-11-28 04:57:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0204081632653061) internal successors, (150), 147 states have internal predecessors, (150), 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 04:57:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2024-11-28 04:57:29,302 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 81 [2024-11-28 04:57:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:29,303 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2024-11-28 04:57:29,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.140845070422535) internal successors, (152), 71 states have internal predecessors, (152), 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 04:57:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2024-11-28 04:57:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 04:57:29,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:29,305 INFO L218 NwaCegarLoop]: trace histogram [63, 62, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:29,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:29,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:29,506 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:29,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash -693981937, now seen corresponding path program 5 times [2024-11-28 04:57:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:29,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601654039] [2024-11-28 04:57:29,506 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:57:29,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:29,684 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2024-11-28 04:57:29,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4018 backedges. 186 proven. 1 refuted. 0 times theorem prover too weak. 3831 trivial. 0 not checked. [2024-11-28 04:57:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:29,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601654039] [2024-11-28 04:57:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601654039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566961741] [2024-11-28 04:57:29,879 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:57:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:29,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:29,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:57:30,133 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2024-11-28 04:57:30,134 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:30,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:57:30,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4018 backedges. 2016 proven. 961 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2024-11-28 04:57:30,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4018 backedges. 2016 proven. 961 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2024-11-28 04:57:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566961741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:32,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:32,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 34, 34] total 66 [2024-11-28 04:57:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251242557] [2024-11-28 04:57:32,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:32,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-28 04:57:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:32,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-28 04:57:32,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:57:32,797 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 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 04:57:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:33,136 INFO L93 Difference]: Finished difference Result 233 states and 301 transitions. [2024-11-28 04:57:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:57:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-28 04:57:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:33,139 INFO L225 Difference]: With dead ends: 233 [2024-11-28 04:57:33,140 INFO L226 Difference]: Without dead ends: 214 [2024-11-28 04:57:33,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 04:57:33,142 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:33,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:57:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-28 04:57:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-28 04:57:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.1690140845070423) internal successors, (249), 213 states have internal predecessors, (249), 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 04:57:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 249 transitions. [2024-11-28 04:57:33,181 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 249 transitions. Word has length 147 [2024-11-28 04:57:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:33,182 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 249 transitions. [2024-11-28 04:57:33,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 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 04:57:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 249 transitions. [2024-11-28 04:57:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-28 04:57:33,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:33,186 INFO L218 NwaCegarLoop]: trace histogram [96, 62, 34, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:33,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:57:33,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:33,390 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:33,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash -351104569, now seen corresponding path program 6 times [2024-11-28 04:57:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724172365] [2024-11-28 04:57:33,391 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:57:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:33,687 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-11-28 04:57:33,688 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9265 backedges. 5310 proven. 49 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2024-11-28 04:57:36,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:36,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724172365] [2024-11-28 04:57:36,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724172365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:36,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562666577] [2024-11-28 04:57:36,349 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:57:36,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:36,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:36,351 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:36,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:57:36,701 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-11-28 04:57:36,701 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:57:36,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 04:57:36,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9265 backedges. 5310 proven. 49 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2024-11-28 04:57:38,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9265 backedges. 5310 proven. 49 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2024-11-28 04:57:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562666577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:39,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 119 [2024-11-28 04:57:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044617234] [2024-11-28 04:57:39,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:39,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-28 04:57:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:39,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-28 04:57:39,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6280, Invalid=7762, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 04:57:39,889 INFO L87 Difference]: Start difference. First operand 214 states and 249 transitions. Second operand has 119 states, 119 states have (on average 2.2016806722689077) internal successors, (262), 119 states have internal predecessors, (262), 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 04:57:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:40,893 INFO L93 Difference]: Finished difference Result 1488 states and 2157 transitions. [2024-11-28 04:57:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 04:57:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.2016806722689077) internal successors, (262), 119 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2024-11-28 04:57:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:40,902 INFO L225 Difference]: With dead ends: 1488 [2024-11-28 04:57:40,902 INFO L226 Difference]: Without dead ends: 1484 [2024-11-28 04:57:40,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9366 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=6280, Invalid=7762, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 04:57:40,907 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 224 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:40,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 484 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:57:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2024-11-28 04:57:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 294. [2024-11-28 04:57:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.1228668941979523) internal successors, (329), 293 states have internal predecessors, (329), 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 04:57:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2024-11-28 04:57:40,960 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 213 [2024-11-28 04:57:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:40,961 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2024-11-28 04:57:40,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.2016806722689077) internal successors, (262), 119 states have internal predecessors, (262), 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 04:57:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2024-11-28 04:57:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-28 04:57:40,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:40,965 INFO L218 NwaCegarLoop]: trace histogram [96, 62, 47, 47, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:40,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:57:41,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:41,166 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:41,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 283278695, now seen corresponding path program 7 times [2024-11-28 04:57:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117684109] [2024-11-28 04:57:41,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:57:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11425 backedges. 4221 proven. 3906 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:57:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117684109] [2024-11-28 04:57:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117684109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:57:47,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064253983] [2024-11-28 04:57:47,649 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:57:47,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:57:47,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:57:47,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:57:47,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:57:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:47,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-28 04:57:47,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:57:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11425 backedges. 4221 proven. 3906 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:57:48,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:57:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11425 backedges. 4221 proven. 3906 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:57:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064253983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:57:54,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:57:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2024-11-28 04:57:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366037704] [2024-11-28 04:57:54,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:57:54,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-28 04:57:54,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:54,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-28 04:57:54,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 04:57:54,136 INFO L87 Difference]: Start difference. First operand 294 states and 329 transitions. Second operand has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 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 04:57:54,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:54,774 INFO L93 Difference]: Finished difference Result 590 states and 724 transitions. [2024-11-28 04:57:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-28 04:57:54,775 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2024-11-28 04:57:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:54,777 INFO L225 Difference]: With dead ends: 590 [2024-11-28 04:57:54,778 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 04:57:54,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-28 04:57:54,781 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:54,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:57:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 04:57:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-28 04:57:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.0855106888361046) internal successors, (457), 421 states have internal predecessors, (457), 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 04:57:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 457 transitions. [2024-11-28 04:57:54,855 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 457 transitions. Word has length 293 [2024-11-28 04:57:54,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:54,856 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 457 transitions. [2024-11-28 04:57:54,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0697674418604652) internal successors, (267), 129 states have internal predecessors, (267), 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 04:57:54,857 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 457 transitions. [2024-11-28 04:57:54,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-28 04:57:54,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:54,865 INFO L218 NwaCegarLoop]: trace histogram [160, 126, 47, 47, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:54,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:57:55,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:57:55,066 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:55,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash 951897063, now seen corresponding path program 8 times [2024-11-28 04:57:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097250657] [2024-11-28 04:57:55,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:57:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:55,576 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:57:55,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 27809 backedges. 8509 proven. 16002 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:58:14,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097250657] [2024-11-28 04:58:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097250657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780797862] [2024-11-28 04:58:14,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:58:14,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:14,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:14,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:58:15,104 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:58:15,104 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:15,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 254 conjuncts are in the unsatisfiable core [2024-11-28 04:58:15,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 27809 backedges. 8509 proven. 16002 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:58:15,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 27809 backedges. 8509 proven. 16002 refuted. 0 times theorem prover too weak. 3298 trivial. 0 not checked. [2024-11-28 04:58:37,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780797862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:37,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2024-11-28 04:58:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869759600] [2024-11-28 04:58:37,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:37,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2024-11-28 04:58:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:37,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2024-11-28 04:58:37,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-28 04:58:37,701 INFO L87 Difference]: Start difference. First operand 422 states and 457 transitions. Second operand has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 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 04:58:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:39,903 INFO L93 Difference]: Finished difference Result 846 states and 1044 transitions. [2024-11-28 04:58:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2024-11-28 04:58:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 421 [2024-11-28 04:58:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:39,907 INFO L225 Difference]: With dead ends: 846 [2024-11-28 04:58:39,907 INFO L226 Difference]: Without dead ends: 678 [2024-11-28 04:58:39,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 29.2s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-28 04:58:39,911 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:39,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:58:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-28 04:58:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2024-11-28 04:58:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.053175775480059) internal successors, (713), 677 states have internal predecessors, (713), 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 04:58:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 713 transitions. [2024-11-28 04:58:40,057 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 713 transitions. Word has length 421 [2024-11-28 04:58:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:40,057 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 713 transitions. [2024-11-28 04:58:40,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.035019455252918) internal successors, (523), 257 states have internal predecessors, (523), 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 04:58:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 713 transitions. [2024-11-28 04:58:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2024-11-28 04:58:40,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:40,074 INFO L218 NwaCegarLoop]: trace histogram [288, 254, 47, 47, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:40,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:58:40,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:58:40,275 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:40,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1312385255, now seen corresponding path program 9 times [2024-11-28 04:58:40,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:40,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861195529] [2024-11-28 04:58:40,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:58:40,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:40,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 68 check-sat command(s) [2024-11-28 04:58:40,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 85153 backedges. 18174 proven. 2209 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 04:58:42,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:58:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861195529] [2024-11-28 04:58:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861195529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746805887] [2024-11-28 04:58:42,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:58:42,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:42,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:42,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:42,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:58:43,347 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 68 check-sat command(s) [2024-11-28 04:58:43,347 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:58:43,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-28 04:58:43,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 85153 backedges. 18174 proven. 2209 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 04:58:46,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:58:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 85153 backedges. 18174 proven. 2209 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 04:58:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746805887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:58:49,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:58:49,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 179 [2024-11-28 04:58:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992353586] [2024-11-28 04:58:49,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:49,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2024-11-28 04:58:49,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:49,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2024-11-28 04:58:49,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14220, Invalid=17642, Unknown=0, NotChecked=0, Total=31862 [2024-11-28 04:58:49,017 INFO L87 Difference]: Start difference. First operand 678 states and 713 transitions. Second operand has 179 states, 179 states have (on average 2.804469273743017) internal successors, (502), 179 states have internal predecessors, (502), 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 04:58:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:51,034 INFO L93 Difference]: Finished difference Result 1992 states and 2681 transitions. [2024-11-28 04:58:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-28 04:58:51,035 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 2.804469273743017) internal successors, (502), 179 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 677 [2024-11-28 04:58:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:51,043 INFO L225 Difference]: With dead ends: 1992 [2024-11-28 04:58:51,044 INFO L226 Difference]: Without dead ends: 1988 [2024-11-28 04:58:51,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1436 GetRequests, 1259 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23726 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=14220, Invalid=17642, Unknown=0, NotChecked=0, Total=31862 [2024-11-28 04:58:51,046 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 128 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:51,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 432 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:58:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2024-11-28 04:58:51,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 798. [2024-11-28 04:58:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.0451693851944792) internal successors, (833), 797 states have internal predecessors, (833), 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 04:58:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 833 transitions. [2024-11-28 04:58:51,245 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 833 transitions. Word has length 677 [2024-11-28 04:58:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:51,247 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 833 transitions. [2024-11-28 04:58:51,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 2.804469273743017) internal successors, (502), 179 states have internal predecessors, (502), 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 04:58:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 833 transitions. [2024-11-28 04:58:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2024-11-28 04:58:51,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:51,253 INFO L218 NwaCegarLoop]: trace histogram [288, 254, 107, 107, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:58:51,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:58:51,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:58:51,454 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:51,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2029736535, now seen corresponding path program 10 times [2024-11-28 04:58:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:51,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681942786] [2024-11-28 04:58:51,455 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:58:51,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:51,736 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:58:51,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 94393 backedges. 18174 proven. 11449 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2024-11-28 04:59:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681942786] [2024-11-28 04:59:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681942786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:02,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832467749] [2024-11-28 04:59:02,015 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:59:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:59:02,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:59:02,020 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:59:02,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:59:02,545 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:59:02,545 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:59:02,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 510 conjuncts are in the unsatisfiable core [2024-11-28 04:59:02,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:59:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 94393 backedges. 17085 proven. 64770 refuted. 0 times theorem prover too weak. 12538 trivial. 0 not checked. [2024-11-28 04:59:38,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:01:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 94393 backedges. 17085 proven. 64770 refuted. 0 times theorem prover too weak. 12538 trivial. 0 not checked. [2024-11-28 05:01:10,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832467749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:01:10,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:01:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 257, 257] total 620 [2024-11-28 05:01:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153592111] [2024-11-28 05:01:10,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:01:10,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 620 states [2024-11-28 05:01:10,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:10,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 620 interpolants. [2024-11-28 05:01:10,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136810, Invalid=246970, Unknown=0, NotChecked=0, Total=383780 [2024-11-28 05:01:10,364 INFO L87 Difference]: Start difference. First operand 798 states and 833 transitions. Second operand has 620 states, 620 states have (on average 2.1258064516129034) internal successors, (1318), 620 states have internal predecessors, (1318), 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 05:03:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:03:41,909 INFO L93 Difference]: Finished difference Result 2791 states and 3713 transitions. [2024-11-28 05:03:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 620 states. [2024-11-28 05:03:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 620 states, 620 states have (on average 2.1258064516129034) internal successors, (1318), 620 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 797 [2024-11-28 05:03:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:03:41,920 INFO L225 Difference]: With dead ends: 2791 [2024-11-28 05:03:41,921 INFO L226 Difference]: Without dead ends: 2503 [2024-11-28 05:03:41,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2246 GetRequests, 1118 SyntacticMatches, 0 SemanticMatches, 1128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275044 ImplicationChecksByTransitivity, 245.0s TimeCoverageRelationStatistics Valid=418330, Invalid=857440, Unknown=0, NotChecked=0, Total=1275770 [2024-11-28 05:03:41,977 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 56 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:03:41,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 311 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 05:03:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2024-11-28 05:03:42,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1312. [2024-11-28 05:03:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 1.0274599542334095) internal successors, (1347), 1311 states have internal predecessors, (1347), 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 05:03:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1347 transitions. [2024-11-28 05:03:42,394 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1347 transitions. Word has length 797 [2024-11-28 05:03:42,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:03:42,395 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 1347 transitions. [2024-11-28 05:03:42,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 620 states, 620 states have (on average 2.1258064516129034) internal successors, (1318), 620 states have internal predecessors, (1318), 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 05:03:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1347 transitions. [2024-11-28 05:03:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1312 [2024-11-28 05:03:42,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:03:42,410 INFO L218 NwaCegarLoop]: trace histogram [544, 510, 108, 108, 34, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:03:42,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:03:42,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dacbcd44-0d54-4dd2-b98f-74657f730474/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 05:03:42,611 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:03:42,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:03:42,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1379311035, now seen corresponding path program 11 times [2024-11-28 05:03:42,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:03:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851855859] [2024-11-28 05:03:42,612 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:03:42,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:03:46,913 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 545 check-sat command(s) [2024-11-28 05:03:46,913 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat