./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i --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_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/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_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/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_21624389-6df1-448f-bb59-2d5f90170314/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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:09:11,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:09:11,782 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:09:11,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:09:11,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:09:11,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:09:11,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:09:11,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:09:11,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:09:11,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:09:11,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:09:11,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:09:11,814 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:09:11,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:09:11,814 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:09:11,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:09:11,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:09:11,816 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:09:11,816 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:09:11,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:11,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:11,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:11,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:11,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:09:11,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:11,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:09:11,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:09:11,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:09:11,819 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:09:11,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:09:11,819 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:09:11,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:09:11,819 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_21624389-6df1-448f-bb59-2d5f90170314/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 -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2024-11-28 02:09:12,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:09:12,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:09:12,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:09:12,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:09:12,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:09:12,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-28 02:09:15,290 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/data/5a68234df/8b44bcee04df4453a5301d0d882af654/FLAG2cb82a5ec [2024-11-28 02:09:15,595 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:09:15,595 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-28 02:09:15,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/data/5a68234df/8b44bcee04df4453a5301d0d882af654/FLAG2cb82a5ec [2024-11-28 02:09:15,628 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/data/5a68234df/8b44bcee04df4453a5301d0d882af654 [2024-11-28 02:09:15,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:09:15,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:09:15,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:15,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:09:15,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:09:15,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2981da0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15, skipping insertion in model container [2024-11-28 02:09:15,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:09:15,824 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_21624389-6df1-448f-bb59-2d5f90170314/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-28 02:09:15,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:15,860 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:09:15,871 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_21624389-6df1-448f-bb59-2d5f90170314/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-28 02:09:15,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:15,898 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:09:15,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15 WrapperNode [2024-11-28 02:09:15,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:15,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:15,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:09:15,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:09:15,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,937 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-28 02:09:15,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:15,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:09:15,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:09:15,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:09:15,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,968 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 02:09:15,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,977 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:15,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:09:15,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:09:15,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:09:15,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:09:15,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (1/1) ... [2024-11-28 02:09:16,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:16,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:16,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:09:16,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:09:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:09:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:09:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:09:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:09:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:09:16,151 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:09:16,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:09:16,326 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 02:09:16,326 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:09:16,335 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:09:16,335 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 02:09:16,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:16 BoogieIcfgContainer [2024-11-28 02:09:16,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:09:16,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:09:16,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:09:16,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:09:16,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:09:15" (1/3) ... [2024-11-28 02:09:16,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa12fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:16, skipping insertion in model container [2024-11-28 02:09:16,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:15" (2/3) ... [2024-11-28 02:09:16,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa12fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:16, skipping insertion in model container [2024-11-28 02:09:16,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:16" (3/3) ... [2024-11-28 02:09:16,346 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2024-11-28 02:09:16,361 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:09:16,363 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_allDiff2_ground.i that has 1 procedures, 27 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-28 02:09:16,422 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:09:16,439 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;@206787dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:09:16,440 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:09:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:09:16,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:16,452 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:16,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:16,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 628871415, now seen corresponding path program 1 times [2024-11-28 02:09:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:16,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089180719] [2024-11-28 02:09:16,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089180719] [2024-11-28 02:09:16,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089180719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:16,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:16,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:09:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229843772] [2024-11-28 02:09:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:16,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:09:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:16,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:09:16,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:09:16,734 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 02:09:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:16,797 INFO L93 Difference]: Finished difference Result 52 states and 76 transitions. [2024-11-28 02:09:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:09:16,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Word has length 12 [2024-11-28 02:09:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:16,810 INFO L225 Difference]: With dead ends: 52 [2024-11-28 02:09:16,810 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 02:09:16,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:09:16,820 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:16,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 02:09:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-28 02:09:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 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 02:09:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-28 02:09:16,856 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2024-11-28 02:09:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:16,856 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-28 02:09:16,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 02:09:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-28 02:09:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:09:16,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:16,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:16,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:09:16,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:16,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1465452148, now seen corresponding path program 1 times [2024-11-28 02:09:16,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:16,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887394796] [2024-11-28 02:09:16,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:16,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:17,018 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 02:09:17,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887394796] [2024-11-28 02:09:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887394796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825266719] [2024-11-28 02:09:17,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:17,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:17,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:17,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:17,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:09:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:17,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:09:17,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:17,154 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825266719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 02:09:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739066955] [2024-11-28 02:09:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:17,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:17,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:17,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:17,158 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 02:09:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:17,220 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-11-28 02:09:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:17,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Word has length 14 [2024-11-28 02:09:17,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:17,223 INFO L225 Difference]: With dead ends: 41 [2024-11-28 02:09:17,223 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 02:09:17,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:17,224 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:17,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 02:09:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2024-11-28 02:09:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2024-11-28 02:09:17,233 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 14 [2024-11-28 02:09:17,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:17,235 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2024-11-28 02:09:17,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 02:09:17,235 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2024-11-28 02:09:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:09:17,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:17,236 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:17,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:17,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:17,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:17,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -124994299, now seen corresponding path program 1 times [2024-11-28 02:09:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:17,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719895034] [2024-11-28 02:09:17,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719895034] [2024-11-28 02:09:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719895034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960165088] [2024-11-28 02:09:17,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:17,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:17,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:17,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:09:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:17,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:09:17,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:17,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960165088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:17,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:09:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038205354] [2024-11-28 02:09:17,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:17,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:09:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:17,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:09:17,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:17,651 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 02:09:17,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:17,763 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2024-11-28 02:09:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:09:17,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) Word has length 18 [2024-11-28 02:09:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:17,765 INFO L225 Difference]: With dead ends: 63 [2024-11-28 02:09:17,766 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 02:09:17,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:17,768 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:17,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 47 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 02:09:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2024-11-28 02:09:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2024-11-28 02:09:17,776 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2024-11-28 02:09:17,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:17,777 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2024-11-28 02:09:17,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 02:09:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2024-11-28 02:09:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:09:17,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:17,778 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:17,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:17,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:17,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:17,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:17,979 INFO L85 PathProgramCache]: Analyzing trace with hash 990656209, now seen corresponding path program 2 times [2024-11-28 02:09:17,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:17,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446371007] [2024-11-28 02:09:17,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:17,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:18,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:18,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:09:18,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446371007] [2024-11-28 02:09:18,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446371007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:18,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724167263] [2024-11-28 02:09:18,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:18,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:18,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:18,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:18,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:09:18,267 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:18,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:18,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:09:18,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:18,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:09:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724167263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:18,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:18,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2024-11-28 02:09:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377246533] [2024-11-28 02:09:18,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:18,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:09:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:18,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:09:18,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:09:18,447 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:18,628 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-11-28 02:09:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:09:18,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 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 24 [2024-11-28 02:09:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:18,631 INFO L225 Difference]: With dead ends: 118 [2024-11-28 02:09:18,631 INFO L226 Difference]: Without dead ends: 98 [2024-11-28 02:09:18,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:09:18,632 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 145 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:18,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 116 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-28 02:09:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-28 02:09:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 97 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2024-11-28 02:09:18,650 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 24 [2024-11-28 02:09:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:18,650 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2024-11-28 02:09:18,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2024-11-28 02:09:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:09:18,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:18,652 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:18,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:18,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 02:09:18,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:18,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1519738383, now seen corresponding path program 3 times [2024-11-28 02:09:18,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:18,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303523961] [2024-11-28 02:09:18,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:18,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:18,895 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:09:18,895 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-28 02:09:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:19,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303523961] [2024-11-28 02:09:19,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303523961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:19,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:19,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:09:19,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884648252] [2024-11-28 02:09:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:19,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:09:19,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:19,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:09:19,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:09:19,023 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:19,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:19,141 INFO L93 Difference]: Finished difference Result 221 states and 287 transitions. [2024-11-28 02:09:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:09:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 68 [2024-11-28 02:09:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:19,144 INFO L225 Difference]: With dead ends: 221 [2024-11-28 02:09:19,144 INFO L226 Difference]: Without dead ends: 211 [2024-11-28 02:09:19,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:09:19,145 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:19,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-28 02:09:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 99. [2024-11-28 02:09:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2024-11-28 02:09:19,179 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 68 [2024-11-28 02:09:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:19,180 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2024-11-28 02:09:19,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2024-11-28 02:09:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:09:19,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:19,181 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:19,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:09:19,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:19,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:19,182 INFO L85 PathProgramCache]: Analyzing trace with hash -942059175, now seen corresponding path program 1 times [2024-11-28 02:09:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106962587] [2024-11-28 02:09:19,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 02:09:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:19,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106962587] [2024-11-28 02:09:19,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106962587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:19,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:19,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:09:19,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637917396] [2024-11-28 02:09:19,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:19,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:09:19,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:19,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:09:19,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:19,447 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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 02:09:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:19,511 INFO L93 Difference]: Finished difference Result 169 states and 211 transitions. [2024-11-28 02:09:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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) Word has length 72 [2024-11-28 02:09:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:19,512 INFO L225 Difference]: With dead ends: 169 [2024-11-28 02:09:19,512 INFO L226 Difference]: Without dead ends: 100 [2024-11-28 02:09:19,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:19,513 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:19,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-28 02:09:19,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-28 02:09:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 99 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2024-11-28 02:09:19,535 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 72 [2024-11-28 02:09:19,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:19,536 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2024-11-28 02:09:19,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 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 02:09:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2024-11-28 02:09:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 02:09:19,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:19,540 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:19,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:09:19,541 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:19,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2123690177, now seen corresponding path program 2 times [2024-11-28 02:09:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289473537] [2024-11-28 02:09:19,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:19,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:19,600 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:19,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 02:09:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289473537] [2024-11-28 02:09:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289473537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216194508] [2024-11-28 02:09:19,984 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:19,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:19,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:19,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:19,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:09:20,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:20,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:20,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:09:20,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 02:09:20,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 02:09:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216194508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:20,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 02:09:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764061083] [2024-11-28 02:09:20,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:20,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:09:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:20,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:09:20,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:09:20,536 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:20,855 INFO L93 Difference]: Finished difference Result 323 states and 426 transitions. [2024-11-28 02:09:20,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:09:20,856 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-28 02:09:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:20,858 INFO L225 Difference]: With dead ends: 323 [2024-11-28 02:09:20,858 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 02:09:20,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:09:20,863 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 434 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:20,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 190 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 02:09:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 124. [2024-11-28 02:09:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2024-11-28 02:09:20,891 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 76 [2024-11-28 02:09:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:20,891 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2024-11-28 02:09:20,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2024-11-28 02:09:20,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:09:20,895 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:20,895 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:20,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:21,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:09:21,096 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:21,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash -236468751, now seen corresponding path program 3 times [2024-11-28 02:09:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:21,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370471291] [2024-11-28 02:09:21,097 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:21,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:21,128 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:09:21,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-11-28 02:09:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370471291] [2024-11-28 02:09:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370471291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908418990] [2024-11-28 02:09:21,212 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:21,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:21,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:09:21,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:09:21,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:21,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:09:21,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-11-28 02:09:21,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-11-28 02:09:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908418990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:21,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 02:09:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851039893] [2024-11-28 02:09:21,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:21,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:09:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:21,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:09:21,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:09:21,544 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:22,029 INFO L93 Difference]: Finished difference Result 601 states and 834 transitions. [2024-11-28 02:09:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:09:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 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 100 [2024-11-28 02:09:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:22,033 INFO L225 Difference]: With dead ends: 601 [2024-11-28 02:09:22,033 INFO L226 Difference]: Without dead ends: 591 [2024-11-28 02:09:22,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:09:22,035 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:22,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 108 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-28 02:09:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 184. [2024-11-28 02:09:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.278688524590164) internal successors, (234), 183 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 234 transitions. [2024-11-28 02:09:22,081 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 234 transitions. Word has length 100 [2024-11-28 02:09:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:22,081 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 234 transitions. [2024-11-28 02:09:22,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 234 transitions. [2024-11-28 02:09:22,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 02:09:22,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:22,085 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:22,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:22,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:22,289 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:22,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1763047465, now seen corresponding path program 4 times [2024-11-28 02:09:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915075356] [2024-11-28 02:09:22,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:22,333 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:22,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 104 proven. 38 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-28 02:09:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915075356] [2024-11-28 02:09:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915075356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678791445] [2024-11-28 02:09:22,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:22,490 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:22,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:09:22,618 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:22,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:22,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:09:22,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 71 proven. 58 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-28 02:09:22,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 71 proven. 58 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-28 02:09:22,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678791445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:22,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:22,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-11-28 02:09:22,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904098015] [2024-11-28 02:09:22,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:22,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:09:22,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:22,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:09:22,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:09:22,863 INFO L87 Difference]: Start difference. First operand 184 states and 234 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:23,112 INFO L93 Difference]: Finished difference Result 304 states and 402 transitions. [2024-11-28 02:09:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:09:23,112 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 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 112 [2024-11-28 02:09:23,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:23,113 INFO L225 Difference]: With dead ends: 304 [2024-11-28 02:09:23,114 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 02:09:23,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:09:23,119 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:23,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 117 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 02:09:23,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-28 02:09:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.1941176470588235) internal successors, (203), 170 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 203 transitions. [2024-11-28 02:09:23,153 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 203 transitions. Word has length 112 [2024-11-28 02:09:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:23,154 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 203 transitions. [2024-11-28 02:09:23,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 203 transitions. [2024-11-28 02:09:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 02:09:23,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:23,156 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 19, 19, 19, 19, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:23,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:09:23,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:23,361 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:23,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 536741849, now seen corresponding path program 5 times [2024-11-28 02:09:23,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:23,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890122957] [2024-11-28 02:09:23,361 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:09:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:23,482 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 02:09:23,483 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:23,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 463 proven. 34 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2024-11-28 02:09:23,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:23,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890122957] [2024-11-28 02:09:23,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890122957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:23,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791423934] [2024-11-28 02:09:23,786 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:09:23,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:23,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:23,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:23,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:09:24,068 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 02:09:24,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:24,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:09:24,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 584 proven. 34 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-28 02:09:24,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 589 proven. 29 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-28 02:09:24,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791423934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:24,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:24,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-11-28 02:09:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210594164] [2024-11-28 02:09:24,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:24,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:09:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:24,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:09:24,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:09:24,277 INFO L87 Difference]: Start difference. First operand 171 states and 203 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:24,502 INFO L93 Difference]: Finished difference Result 297 states and 365 transitions. [2024-11-28 02:09:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:09:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 168 [2024-11-28 02:09:24,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:24,504 INFO L225 Difference]: With dead ends: 297 [2024-11-28 02:09:24,504 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 02:09:24,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 333 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:09:24,509 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:24,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 139 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:09:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 02:09:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-28 02:09:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 194 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 232 transitions. [2024-11-28 02:09:24,541 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 232 transitions. Word has length 168 [2024-11-28 02:09:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:24,542 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 232 transitions. [2024-11-28 02:09:24,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 232 transitions. [2024-11-28 02:09:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 02:09:24,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:24,544 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:24,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:24,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:24,744 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:24,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1781077705, now seen corresponding path program 6 times [2024-11-28 02:09:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:24,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973803083] [2024-11-28 02:09:24,745 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:09:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:24,871 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 02:09:24,871 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 414 proven. 28 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2024-11-28 02:09:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973803083] [2024-11-28 02:09:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973803083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248255209] [2024-11-28 02:09:25,143 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:09:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:25,145 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:25,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:09:25,418 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 02:09:25,418 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:25,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:09:25,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 414 proven. 28 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2024-11-28 02:09:25,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 414 proven. 28 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2024-11-28 02:09:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248255209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:25,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2024-11-28 02:09:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496791991] [2024-11-28 02:09:25,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:25,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:09:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:25,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:09:25,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:09:25,723 INFO L87 Difference]: Start difference. First operand 195 states and 232 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:26,539 INFO L93 Difference]: Finished difference Result 1106 states and 1512 transitions. [2024-11-28 02:09:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 02:09:26,540 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 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 192 [2024-11-28 02:09:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:26,548 INFO L225 Difference]: With dead ends: 1106 [2024-11-28 02:09:26,548 INFO L226 Difference]: Without dead ends: 1096 [2024-11-28 02:09:26,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=621, Invalid=1185, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:09:26,551 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:26,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 156 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-28 02:09:26,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 309. [2024-11-28 02:09:26,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.2694805194805194) internal successors, (391), 308 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 391 transitions. [2024-11-28 02:09:26,617 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 391 transitions. Word has length 192 [2024-11-28 02:09:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:26,617 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 391 transitions. [2024-11-28 02:09:26,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:26,617 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 391 transitions. [2024-11-28 02:09:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-28 02:09:26,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:26,620 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:26,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:26,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:09:26,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:26,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -180035783, now seen corresponding path program 7 times [2024-11-28 02:09:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228267033] [2024-11-28 02:09:26,822 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:09:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228267033] [2024-11-28 02:09:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228267033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070441790] [2024-11-28 02:09:28,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:09:28,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:28,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:28,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:28,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:09:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:28,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:09:28,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:28,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2776 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070441790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:29,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:29,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 02:09:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809164901] [2024-11-28 02:09:29,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:29,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 02:09:29,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:29,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 02:09:29,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:09:29,331 INFO L87 Difference]: Start difference. First operand 309 states and 391 transitions. Second operand has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:30,713 INFO L93 Difference]: Finished difference Result 4081 states and 5564 transitions. [2024-11-28 02:09:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:09:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 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 216 [2024-11-28 02:09:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:30,731 INFO L225 Difference]: With dead ends: 4081 [2024-11-28 02:09:30,731 INFO L226 Difference]: Without dead ends: 3819 [2024-11-28 02:09:30,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:09:30,734 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1018 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:30,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 310 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:09:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3819 states. [2024-11-28 02:09:30,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3819 to 357. [2024-11-28 02:09:30,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.2331460674157304) internal successors, (439), 356 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 439 transitions. [2024-11-28 02:09:30,834 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 439 transitions. Word has length 216 [2024-11-28 02:09:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:30,835 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 439 transitions. [2024-11-28 02:09:30,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.306122448979592) internal successors, (113), 49 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 439 transitions. [2024-11-28 02:09:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 02:09:30,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:30,839 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 31, 31, 31, 31, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:30,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:09:31,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:09:31,044 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:31,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 340748697, now seen corresponding path program 8 times [2024-11-28 02:09:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721834539] [2024-11-28 02:09:31,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:31,157 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:31,157 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721834539] [2024-11-28 02:09:34,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721834539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526234117] [2024-11-28 02:09:34,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:34,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:34,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:34,095 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:34,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:09:34,377 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:34,377 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:34,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 02:09:34,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:34,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2024-11-28 02:09:37,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526234117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:37,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:37,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-28 02:09:37,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427160759] [2024-11-28 02:09:37,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:37,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-28 02:09:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:37,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-28 02:09:37,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:09:37,643 INFO L87 Difference]: Start difference. First operand 357 states and 439 transitions. Second operand has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:43,200 INFO L93 Difference]: Finished difference Result 8785 states and 12020 transitions. [2024-11-28 02:09:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 02:09:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 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 264 [2024-11-28 02:09:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:43,231 INFO L225 Difference]: With dead ends: 8785 [2024-11-28 02:09:43,232 INFO L226 Difference]: Without dead ends: 8523 [2024-11-28 02:09:43,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:09:43,236 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 3314 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:43,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 545 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:09:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8523 states. [2024-11-28 02:09:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8523 to 453. [2024-11-28 02:09:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.1836283185840708) internal successors, (535), 452 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 535 transitions. [2024-11-28 02:09:43,407 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 535 transitions. Word has length 264 [2024-11-28 02:09:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:43,407 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 535 transitions. [2024-11-28 02:09:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.154639175257732) internal successors, (209), 97 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 535 transitions. [2024-11-28 02:09:43,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-28 02:09:43,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:43,415 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 31, 31, 31, 31, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:43,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:43,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:09:43,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:43,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash 96321113, now seen corresponding path program 9 times [2024-11-28 02:09:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495133141] [2024-11-28 02:09:43,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:43,722 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:09:43,722 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11128 backedges. 1115 proven. 151 refuted. 0 times theorem prover too weak. 9862 trivial. 0 not checked. [2024-11-28 02:09:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495133141] [2024-11-28 02:09:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495133141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001810523] [2024-11-28 02:09:43,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:09:43,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:43,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:43,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:09:44,165 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 02:09:44,165 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:44,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:09:44,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11128 backedges. 1115 proven. 151 refuted. 0 times theorem prover too weak. 9862 trivial. 0 not checked. [2024-11-28 02:09:44,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11128 backedges. 1115 proven. 151 refuted. 0 times theorem prover too weak. 9862 trivial. 0 not checked. [2024-11-28 02:09:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001810523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:44,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:44,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2024-11-28 02:09:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856174504] [2024-11-28 02:09:44,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:44,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:09:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:44,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:09:44,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:09:44,639 INFO L87 Difference]: Start difference. First operand 453 states and 535 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:45,842 INFO L93 Difference]: Finished difference Result 1619 states and 2126 transitions. [2024-11-28 02:09:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 02:09:45,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 360 [2024-11-28 02:09:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:45,846 INFO L225 Difference]: With dead ends: 1619 [2024-11-28 02:09:45,847 INFO L226 Difference]: Without dead ends: 1609 [2024-11-28 02:09:45,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1117, Invalid=2543, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 02:09:45,848 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 254 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:45,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 87 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:45,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2024-11-28 02:09:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 543. [2024-11-28 02:09:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.2214022140221403) internal successors, (662), 542 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 662 transitions. [2024-11-28 02:09:46,115 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 662 transitions. Word has length 360 [2024-11-28 02:09:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:46,116 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 662 transitions. [2024-11-28 02:09:46,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 662 transitions. [2024-11-28 02:09:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-28 02:09:46,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:46,127 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 38, 38, 38, 38, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:46,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:46,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:09:46,332 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:46,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1534506801, now seen corresponding path program 10 times [2024-11-28 02:09:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729149906] [2024-11-28 02:09:46,332 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:46,405 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:46,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12143 backedges. 2163 proven. 114 refuted. 0 times theorem prover too weak. 9866 trivial. 0 not checked. [2024-11-28 02:09:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729149906] [2024-11-28 02:09:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729149906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947027975] [2024-11-28 02:09:46,698 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:09:46,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:46,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:46,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:46,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:09:47,048 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:09:47,048 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:47,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:09:47,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12143 backedges. 2174 proven. 127 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2024-11-28 02:09:47,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12143 backedges. 2187 proven. 114 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2024-11-28 02:09:47,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947027975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:47,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2024-11-28 02:09:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356499864] [2024-11-28 02:09:47,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:47,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:09:47,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:47,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:09:47,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:09:47,361 INFO L87 Difference]: Start difference. First operand 543 states and 662 transitions. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:48,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:48,181 INFO L93 Difference]: Finished difference Result 1057 states and 1338 transitions. [2024-11-28 02:09:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 02:09:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 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 388 [2024-11-28 02:09:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:48,184 INFO L225 Difference]: With dead ends: 1057 [2024-11-28 02:09:48,184 INFO L226 Difference]: Without dead ends: 727 [2024-11-28 02:09:48,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 776 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1226, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 02:09:48,186 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 97 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:48,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 218 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:09:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-28 02:09:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 547. [2024-11-28 02:09:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.1831501831501832) internal successors, (646), 546 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:48,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 646 transitions. [2024-11-28 02:09:48,445 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 646 transitions. Word has length 388 [2024-11-28 02:09:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:48,446 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 646 transitions. [2024-11-28 02:09:48,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 646 transitions. [2024-11-28 02:09:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-28 02:09:48,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:48,449 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 39, 39, 39, 39, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:48,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:48,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:09:48,650 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:48,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:48,650 INFO L85 PathProgramCache]: Analyzing trace with hash -835944551, now seen corresponding path program 11 times [2024-11-28 02:09:48,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:48,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663302795] [2024-11-28 02:09:48,650 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:09:48,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:49,930 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 80 check-sat command(s) [2024-11-28 02:09:49,931 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12304 backedges. 1435 proven. 67 refuted. 0 times theorem prover too weak. 10802 trivial. 0 not checked. [2024-11-28 02:09:50,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663302795] [2024-11-28 02:09:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663302795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062477005] [2024-11-28 02:09:50,417 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:09:50,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:50,420 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:50,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:21:19,778 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 80 check-sat command(s) [2024-11-28 02:21:19,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:19,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:21:19,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12304 backedges. 1443 proven. 69 refuted. 0 times theorem prover too weak. 10792 trivial. 0 not checked. [2024-11-28 02:21:19,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12304 backedges. 1452 proven. 60 refuted. 0 times theorem prover too weak. 10792 trivial. 0 not checked. [2024-11-28 02:21:20,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062477005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:20,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:20,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-11-28 02:21:20,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319826181] [2024-11-28 02:21:20,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:20,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:21:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:20,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:21:20,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:21:20,193 INFO L87 Difference]: Start difference. First operand 547 states and 646 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:20,732 INFO L93 Difference]: Finished difference Result 895 states and 1083 transitions. [2024-11-28 02:21:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:21:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 392 [2024-11-28 02:21:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:20,736 INFO L225 Difference]: With dead ends: 895 [2024-11-28 02:21:20,736 INFO L226 Difference]: Without dead ends: 623 [2024-11-28 02:21:20,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 783 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:21:20,737 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 79 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:20,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 162 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:21:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-28 02:21:20,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 453. [2024-11-28 02:21:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 452 states have (on average 1.163716814159292) internal successors, (526), 452 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 526 transitions. [2024-11-28 02:21:20,871 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 526 transitions. Word has length 392 [2024-11-28 02:21:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:20,871 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 526 transitions. [2024-11-28 02:21:20,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 526 transitions. [2024-11-28 02:21:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-28 02:21:20,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:20,874 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 43, 43, 43, 43, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:20,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:21:21,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:21:21,075 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:21,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1544109369, now seen corresponding path program 12 times [2024-11-28 02:21:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029072364] [2024-11-28 02:21:21,075 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:21:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:21,261 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 02:21:21,261 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12988 backedges. 2028 proven. 461 refuted. 0 times theorem prover too weak. 10499 trivial. 0 not checked. [2024-11-28 02:21:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029072364] [2024-11-28 02:21:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029072364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:21,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450756771] [2024-11-28 02:21:21,627 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:21:21,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:21,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:21,629 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:21,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:21:25,728 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 02:21:25,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:25,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:21:25,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12988 backedges. 2028 proven. 461 refuted. 0 times theorem prover too weak. 10499 trivial. 0 not checked. [2024-11-28 02:21:25,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12988 backedges. 2028 proven. 461 refuted. 0 times theorem prover too weak. 10499 trivial. 0 not checked. [2024-11-28 02:21:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450756771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:26,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 29 [2024-11-28 02:21:26,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17758162] [2024-11-28 02:21:26,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:26,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:21:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:26,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:21:26,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:21:26,431 INFO L87 Difference]: Start difference. First operand 453 states and 526 transitions. Second operand has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:28,946 INFO L93 Difference]: Finished difference Result 2055 states and 2749 transitions. [2024-11-28 02:21:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 02:21:28,947 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 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 408 [2024-11-28 02:21:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:28,953 INFO L225 Difference]: With dead ends: 2055 [2024-11-28 02:21:28,954 INFO L226 Difference]: Without dead ends: 2045 [2024-11-28 02:21:28,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4075 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3512, Invalid=7618, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 02:21:28,957 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 538 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:28,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 176 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:21:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2024-11-28 02:21:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 695. [2024-11-28 02:21:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 1.255043227665706) internal successors, (871), 694 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 871 transitions. [2024-11-28 02:21:29,322 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 871 transitions. Word has length 408 [2024-11-28 02:21:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:29,322 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 871 transitions. [2024-11-28 02:21:29,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 29 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:21:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 871 transitions. [2024-11-28 02:21:29,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-28 02:21:29,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:29,326 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 69, 69, 69, 69, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:29,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:21:29,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:21:29,527 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:29,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash -362088247, now seen corresponding path program 13 times [2024-11-28 02:21:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:29,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513704212] [2024-11-28 02:21:29,528 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:21:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18994 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 10158 trivial. 0 not checked. [2024-11-28 02:21:37,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:37,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513704212] [2024-11-28 02:21:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513704212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:37,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615425450] [2024-11-28 02:21:37,887 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:21:37,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:37,889 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:37,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:21:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:38,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 02:21:38,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 18994 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 10158 trivial. 0 not checked. [2024-11-28 02:21:38,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18994 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 10158 trivial. 0 not checked. [2024-11-28 02:21:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615425450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:50,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:50,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-28 02:21:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178955738] [2024-11-28 02:21:50,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:50,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-28 02:21:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:50,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-28 02:21:50,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-28 02:21:50,128 INFO L87 Difference]: Start difference. First operand 695 states and 871 transitions. Second operand has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:14,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:14,623 INFO L93 Difference]: Finished difference Result 51399 states and 71403 transitions. [2024-11-28 02:23:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-28 02:23:14,624 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 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 512 [2024-11-28 02:23:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:14,752 INFO L225 Difference]: With dead ends: 51399 [2024-11-28 02:23:14,752 INFO L226 Difference]: Without dead ends: 50895 [2024-11-28 02:23:14,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-28 02:23:14,771 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6722 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6722 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:14,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6722 Valid, 1025 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:23:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50895 states. [2024-11-28 02:23:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50895 to 887. [2024-11-28 02:23:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.1997742663656885) internal successors, (1063), 886 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1063 transitions. [2024-11-28 02:23:15,813 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1063 transitions. Word has length 512 [2024-11-28 02:23:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:15,814 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1063 transitions. [2024-11-28 02:23:15,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.077720207253886) internal successors, (401), 193 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:23:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1063 transitions. [2024-11-28 02:23:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2024-11-28 02:23:15,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:15,820 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 69, 69, 69, 69, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:15,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:16,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:23:16,021 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:16,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:16,021 INFO L85 PathProgramCache]: Analyzing trace with hash -527424951, now seen corresponding path program 14 times [2024-11-28 02:23:16,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142528383] [2024-11-28 02:23:16,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:16,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:23:16,352 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:16,352 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 46258 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 10158 trivial. 0 not checked. [2024-11-28 02:23:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142528383] [2024-11-28 02:23:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142528383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:23:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102029581] [2024-11-28 02:23:43,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:23:43,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:23:43,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:23:43,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21624389-6df1-448f-bb59-2d5f90170314/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:23:44,113 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:23:44,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:23:44,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-28 02:23:44,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46258 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 10158 trivial. 0 not checked. [2024-11-28 02:23:44,637 INFO L312 TraceCheckSpWp]: Computing backward predicates...