./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array22_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/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_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array22_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/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_33d8c766-cbfd-458d-b574-6fde6ccc0d80/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 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:25:54,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:25:54,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:25:54,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:25:54,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:25:54,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:25:54,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:25:54,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:25:54,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:25:54,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:25:54,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:25:54,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:25:54,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:25:54,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:25:54,348 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:25:54,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:25:54,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:25:54,349 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:25:54,349 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:25:54,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:25:54,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:25:54,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:25:54,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:25:54,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:25:54,350 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:25:54,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:25:54,351 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:25:54,351 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:25:54,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:25:54,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:54,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:54,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:54,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:54,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:25:54,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:25:54,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:25:54,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:25:54,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:54,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:25:54,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:25:54,354 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_33d8c766-cbfd-458d-b574-6fde6ccc0d80/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 -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2024-11-28 04:25:54,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:25:54,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:25:54,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:25:54,783 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:25:54,783 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:25:54,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-28 04:25:58,731 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/data/903207d77/3d179e3feca145ac99fe570409673325/FLAGd136b11b2 [2024-11-28 04:25:59,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:25:59,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/sv-benchmarks/c/array-patterns/array22_pattern.c [2024-11-28 04:25:59,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/data/903207d77/3d179e3feca145ac99fe570409673325/FLAGd136b11b2 [2024-11-28 04:25:59,097 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/data/903207d77/3d179e3feca145ac99fe570409673325 [2024-11-28 04:25:59,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:25:59,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:25:59,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:59,104 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:25:59,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:25:59,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756084c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59, skipping insertion in model container [2024-11-28 04:25:59,111 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:25:59,355 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_33d8c766-cbfd-458d-b574-6fde6ccc0d80/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-28 04:25:59,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:59,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:25:59,431 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_33d8c766-cbfd-458d-b574-6fde6ccc0d80/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2024-11-28 04:25:59,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:25:59,490 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:25:59,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59 WrapperNode [2024-11-28 04:25:59,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:25:59,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:59,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:25:59,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:25:59,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,552 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-28 04:25:59,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:25:59,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:25:59,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:25:59,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:25:59,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,603 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 04:25:59,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,619 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:25:59,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:25:59,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:25:59,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:25:59,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (1/1) ... [2024-11-28 04:25:59,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:25:59,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:59,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:25:59,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:25:59,713 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2024-11-28 04:25:59,713 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:25:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:25:59,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:25:59,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:25:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:25:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:25:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:25:59,803 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:25:59,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:26:00,072 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-28 04:26:00,073 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:26:00,086 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:26:00,086 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:26:00,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:00 BoogieIcfgContainer [2024-11-28 04:26:00,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:26:00,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:26:00,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:26:00,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:26:00,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:25:59" (1/3) ... [2024-11-28 04:26:00,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f0d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:00, skipping insertion in model container [2024-11-28 04:26:00,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:25:59" (2/3) ... [2024-11-28 04:26:00,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13f0d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:26:00, skipping insertion in model container [2024-11-28 04:26:00,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:26:00" (3/3) ... [2024-11-28 04:26:00,100 INFO L128 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2024-11-28 04:26:00,119 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:26:00,121 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array22_pattern.c that has 3 procedures, 43 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-28 04:26:00,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:26:00,219 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;@6a9efca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:26:00,219 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:26:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:00,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:26:00,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:00,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:00,235 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:00,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1353701566, now seen corresponding path program 1 times [2024-11-28 04:26:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851574682] [2024-11-28 04:26:00,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:26:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851574682] [2024-11-28 04:26:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851574682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:00,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:26:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581405532] [2024-11-28 04:26:00,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:00,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:26:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:00,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:26:00,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:00,499 INFO L87 Difference]: Start difference. First operand has 43 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:26:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:00,531 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2024-11-28 04:26:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:26:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 04:26:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:00,542 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:26:00,542 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 04:26:00,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:26:00,553 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:00,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 04:26:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 04:26:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-28 04:26:00,613 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 15 [2024-11-28 04:26:00,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:00,614 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-28 04:26:00,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:26:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-28 04:26:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:26:00,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:00,622 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:00,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:26:00,623 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:00,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash 572403662, now seen corresponding path program 1 times [2024-11-28 04:26:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086240384] [2024-11-28 04:26:00,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:00,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:26:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086240384] [2024-11-28 04:26:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086240384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:26:01,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919960762] [2024-11-28 04:26:01,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:01,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:26:01,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:01,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:26:01,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:01,230 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:01,273 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2024-11-28 04:26:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:26:01,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-28 04:26:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:01,275 INFO L225 Difference]: With dead ends: 48 [2024-11-28 04:26:01,275 INFO L226 Difference]: Without dead ends: 44 [2024-11-28 04:26:01,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:26:01,277 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:01,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:26:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-28 04:26:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-28 04:26:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-28 04:26:01,287 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 42 [2024-11-28 04:26:01,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:01,320 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-28 04:26:01,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-28 04:26:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:26:01,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:01,322 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:01,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:26:01,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:01,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:01,328 INFO L85 PathProgramCache]: Analyzing trace with hash -251202404, now seen corresponding path program 1 times [2024-11-28 04:26:01,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:01,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628006720] [2024-11-28 04:26:01,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:01,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:26:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628006720] [2024-11-28 04:26:01,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628006720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:01,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:01,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:01,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885955431] [2024-11-28 04:26:01,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:01,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:01,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:01,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:01,717 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:01,982 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2024-11-28 04:26:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:26:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-11-28 04:26:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:01,984 INFO L225 Difference]: With dead ends: 90 [2024-11-28 04:26:01,984 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 04:26:01,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:01,986 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:01,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 114 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:26:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 04:26:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2024-11-28 04:26:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2024-11-28 04:26:01,995 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 48 [2024-11-28 04:26:01,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:01,995 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2024-11-28 04:26:01,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2024-11-28 04:26:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:26:01,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:01,997 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:01,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:26:01,997 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:01,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 651682342, now seen corresponding path program 1 times [2024-11-28 04:26:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:01,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278405295] [2024-11-28 04:26:01,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:26:02,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:02,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278405295] [2024-11-28 04:26:02,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278405295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:02,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:02,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:26:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958532951] [2024-11-28 04:26:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:02,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:26:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:02,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:26:02,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:26:02,277 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:02,415 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-28 04:26:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:26:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2024-11-28 04:26:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:02,418 INFO L225 Difference]: With dead ends: 92 [2024-11-28 04:26:02,418 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 04:26:02,418 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 04:26:02,419 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:02,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 101 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:26:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 04:26:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2024-11-28 04:26:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-28 04:26:02,432 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 52 [2024-11-28 04:26:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:02,433 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-28 04:26:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:26:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-28 04:26:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:26:02,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:02,435 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:02,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:26:02,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:02,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1109681386, now seen corresponding path program 1 times [2024-11-28 04:26:02,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:02,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372948953] [2024-11-28 04:26:02,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:26:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372948953] [2024-11-28 04:26:02,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372948953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272676069] [2024-11-28 04:26:02,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:02,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:02,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:02,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:26:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:26:02,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:26:02,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:26:03,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:26:03,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272676069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:26:03,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:26:03,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-28 04:26:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347963954] [2024-11-28 04:26:03,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:26:03,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:26:03,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:03,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:26:03,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:26:03,404 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:26:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:03,724 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2024-11-28 04:26:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:26:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 54 [2024-11-28 04:26:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:03,728 INFO L225 Difference]: With dead ends: 95 [2024-11-28 04:26:03,728 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:26:03,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:26:03,730 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:03,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 118 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:26:03,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:26:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2024-11-28 04:26:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-28 04:26:03,746 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 54 [2024-11-28 04:26:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:03,747 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-28 04:26:03,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:26:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-28 04:26:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:26:03,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:03,749 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:03,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:26:03,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:03,954 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:03,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2145998222, now seen corresponding path program 2 times [2024-11-28 04:26:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23037623] [2024-11-28 04:26:03,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:26:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:04,032 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:26:04,032 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 04:26:04,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23037623] [2024-11-28 04:26:04,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23037623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:26:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310658841] [2024-11-28 04:26:04,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:26:04,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:04,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:04,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:04,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:26:04,516 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:26:04,517 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:04,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:26:04,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:26:04,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:26:04,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310658841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:26:04,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:26:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 04:26:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494017492] [2024-11-28 04:26:04,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:26:04,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:26:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:04,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:26:04,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:26:04,878 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:26:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:05,323 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2024-11-28 04:26:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:26:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 58 [2024-11-28 04:26:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:05,325 INFO L225 Difference]: With dead ends: 115 [2024-11-28 04:26:05,326 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 04:26:05,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:26:05,327 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:05,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 140 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:26:05,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 04:26:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2024-11-28 04:26:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 58 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:26:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2024-11-28 04:26:05,345 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 58 [2024-11-28 04:26:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:05,346 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2024-11-28 04:26:05,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:26:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2024-11-28 04:26:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:26:05,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:05,350 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:05,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:26:05,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:05,551 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:05,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash -555557610, now seen corresponding path program 3 times [2024-11-28 04:26:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25339939] [2024-11-28 04:26:05,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:26:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:05,643 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:26:05,643 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-28 04:26:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140625489] [2024-11-28 04:26:05,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:26:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:26:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:26:05,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:26:05,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:26:06,998 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 04:26:06,998 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:07,002 WARN L254 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 04:26:07,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:26:07,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:26:07,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 04:26:07,719 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-28 04:26:07,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-28 04:26:07,918 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-28 04:26:07,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-28 04:26:10,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:10,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:11,219 INFO L349 Elim1Store]: treesize reduction 508, result has 25.0 percent of original size [2024-11-28 04:26:11,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 122 treesize of output 220 [2024-11-28 04:26:17,071 INFO L349 Elim1Store]: treesize reduction 96, result has 41.8 percent of original size [2024-11-28 04:26:17,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 393 treesize of output 407 [2024-11-28 04:26:25,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:26:25,740 INFO L349 Elim1Store]: treesize reduction 297, result has 0.3 percent of original size [2024-11-28 04:26:25,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 669 treesize of output 725 [2024-11-28 04:26:25,834 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-28 04:26:51,499 WARN L286 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 328 DAG size of output: 335 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:27:15,337 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 337 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:28:42,098 WARN L286 SmtUtils]: Spent 9.52s on a formula simplification that was a NOOP. DAG size: 340 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:28:44,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:28:44,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 69 [2024-11-28 04:28:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:28:46,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:29:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25339939] [2024-11-28 04:29:25,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:29:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140625489] [2024-11-28 04:29:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140625489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:29:25,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:29:25,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2024-11-28 04:29:25,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189182037] [2024-11-28 04:29:25,291 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:25,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:29:25,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:29:25,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:29:25,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3294, Unknown=3, NotChecked=0, Total=3660 [2024-11-28 04:29:25,295 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:29:41,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:30:03,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:30:10,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:30:12,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 04:30:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:12,164 INFO L93 Difference]: Finished difference Result 190 states and 228 transitions. [2024-11-28 04:30:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 04:30:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 74 [2024-11-28 04:30:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:12,172 INFO L225 Difference]: With dead ends: 190 [2024-11-28 04:30:12,172 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:30:12,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 104.0s TimeCoverageRelationStatistics Valid=488, Invalid=4200, Unknown=4, NotChecked=0, Total=4692 [2024-11-28 04:30:12,176 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 79 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:12,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 493 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1503 Invalid, 1 Unknown, 0 Unchecked, 37.2s Time] [2024-11-28 04:30:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:30:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2024-11-28 04:30:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 103 states have (on average 1.174757281553398) internal successors, (121), 103 states have internal predecessors, (121), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-28 04:30:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2024-11-28 04:30:12,292 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 74 [2024-11-28 04:30:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:12,292 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2024-11-28 04:30:12,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:30:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2024-11-28 04:30:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:12,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:12,294 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:12,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:12,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:12,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -944307661, now seen corresponding path program 1 times [2024-11-28 04:30:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096435863] [2024-11-28 04:30:12,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 04:30:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096435863] [2024-11-28 04:30:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096435863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:13,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477599938] [2024-11-28 04:30:13,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:13,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:13,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:13,363 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:13,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:30:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:13,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:30:13,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 04:30:14,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:30:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477599938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:14,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:14,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 18 [2024-11-28 04:30:14,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642369378] [2024-11-28 04:30:14,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:14,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:30:14,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:14,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:30:14,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:30:14,664 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 04:30:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:16,002 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2024-11-28 04:30:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:30:16,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 74 [2024-11-28 04:30:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:16,005 INFO L225 Difference]: With dead ends: 203 [2024-11-28 04:30:16,006 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 04:30:16,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:30:16,007 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:16,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 274 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:30:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 04:30:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2024-11-28 04:30:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.173913043478261) internal successors, (135), 115 states have internal predecessors, (135), 11 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-28 04:30:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2024-11-28 04:30:16,117 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 74 [2024-11-28 04:30:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:16,120 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2024-11-28 04:30:16,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 5 states have call successors, (12), 2 states have call predecessors, (12), 7 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 04:30:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2024-11-28 04:30:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:16,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:16,124 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:16,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:30:16,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:16,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:16,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -280797996, now seen corresponding path program 1 times [2024-11-28 04:30:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718494539] [2024-11-28 04:30:16,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:30:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718494539] [2024-11-28 04:30:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718494539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082941029] [2024-11-28 04:30:16,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:16,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:16,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:16,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:30:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:16,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:30:16,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:30:16,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:30:16,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082941029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:30:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:30:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995770689] [2024-11-28 04:30:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:16,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:30:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:16,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:30:16,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:16,668 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:30:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:16,821 INFO L93 Difference]: Finished difference Result 186 states and 222 transitions. [2024-11-28 04:30:16,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:30:16,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-28 04:30:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:16,824 INFO L225 Difference]: With dead ends: 186 [2024-11-28 04:30:16,824 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 04:30:16,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:30:16,825 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:16,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:30:16,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 04:30:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-28 04:30:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 115 states have internal predecessors, (133), 11 states have call successors, (11), 8 states have call predecessors, (11), 9 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-28 04:30:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2024-11-28 04:30:16,933 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 74 [2024-11-28 04:30:16,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:16,933 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2024-11-28 04:30:16,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:30:16,934 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2024-11-28 04:30:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:16,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:16,935 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:16,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:30:17,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:30:17,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:17,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1005992594, now seen corresponding path program 1 times [2024-11-28 04:30:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:17,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285533450] [2024-11-28 04:30:17,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:30:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285533450] [2024-11-28 04:30:17,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285533450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:17,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661822895] [2024-11-28 04:30:17,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:17,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:17,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:17,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:30:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:17,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:30:17,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:17,417 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:30:17,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:30:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661822895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:17,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:30:17,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:30:17,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905796988] [2024-11-28 04:30:17,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:17,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:30:17,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:17,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:30:17,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:30:17,420 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:30:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:17,557 INFO L93 Difference]: Finished difference Result 205 states and 239 transitions. [2024-11-28 04:30:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:30:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2024-11-28 04:30:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:17,559 INFO L225 Difference]: With dead ends: 205 [2024-11-28 04:30:17,560 INFO L226 Difference]: Without dead ends: 128 [2024-11-28 04:30:17,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:30:17,563 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:17,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:30:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-28 04:30:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2024-11-28 04:30:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 107 states have (on average 1.1308411214953271) internal successors, (121), 108 states have internal predecessors, (121), 10 states have call successors, (10), 7 states have call predecessors, (10), 8 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-28 04:30:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2024-11-28 04:30:17,667 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 74 [2024-11-28 04:30:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:17,667 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2024-11-28 04:30:17,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:30:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2024-11-28 04:30:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:17,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:17,669 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:17,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:17,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:30:17,870 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:17,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1669502259, now seen corresponding path program 1 times [2024-11-28 04:30:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:17,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542544151] [2024-11-28 04:30:17,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 04:30:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542544151] [2024-11-28 04:30:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542544151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508644523] [2024-11-28 04:30:18,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:18,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:18,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:18,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:18,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:30:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:18,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:30:18,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 04:30:19,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 04:30:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508644523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:20,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:20,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 7] total 22 [2024-11-28 04:30:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323040478] [2024-11-28 04:30:20,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:20,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:30:20,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:20,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:30:20,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:30:20,201 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:30:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:22,212 INFO L93 Difference]: Finished difference Result 257 states and 302 transitions. [2024-11-28 04:30:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:30:22,214 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 74 [2024-11-28 04:30:22,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:22,216 INFO L225 Difference]: With dead ends: 257 [2024-11-28 04:30:22,216 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 04:30:22,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:30:22,225 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 152 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:22,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 319 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:30:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 04:30:22,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 128. [2024-11-28 04:30:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 109 states have (on average 1.128440366972477) internal successors, (123), 109 states have internal predecessors, (123), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 04:30:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2024-11-28 04:30:22,299 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 74 [2024-11-28 04:30:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:22,300 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2024-11-28 04:30:22,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.8095238095238093) internal successors, (80), 22 states have internal predecessors, (80), 6 states have call successors, (13), 2 states have call predecessors, (13), 7 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-28 04:30:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2024-11-28 04:30:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:22,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:22,301 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:22,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:22,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:30:22,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:22,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1414765714, now seen corresponding path program 1 times [2024-11-28 04:30:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522101627] [2024-11-28 04:30:22,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 04:30:22,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522101627] [2024-11-28 04:30:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522101627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:30:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:30:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:30:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778429768] [2024-11-28 04:30:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:30:22,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:30:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:22,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:30:22,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:30:22,625 INFO L87 Difference]: Start difference. First operand 128 states and 145 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:30:22,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:22,750 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2024-11-28 04:30:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:30:22,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 74 [2024-11-28 04:30:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:22,754 INFO L225 Difference]: With dead ends: 182 [2024-11-28 04:30:22,755 INFO L226 Difference]: Without dead ends: 130 [2024-11-28 04:30:22,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:30:22,756 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:22,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:30:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-28 04:30:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-28 04:30:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 110 states have internal predecessors, (125), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 04:30:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2024-11-28 04:30:22,841 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 74 [2024-11-28 04:30:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:22,842 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2024-11-28 04:30:22,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:30:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2024-11-28 04:30:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:30:22,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:22,843 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:22,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:30:22,843 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:22,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1280752208, now seen corresponding path program 1 times [2024-11-28 04:30:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068555073] [2024-11-28 04:30:22,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 04:30:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:23,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068555073] [2024-11-28 04:30:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068555073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:23,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324452868] [2024-11-28 04:30:23,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:23,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:30:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:23,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:30:23,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:30:24,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 04:30:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324452868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:25,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:25,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 14] total 29 [2024-11-28 04:30:25,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812955195] [2024-11-28 04:30:25,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:25,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 04:30:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:25,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 04:30:25,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:30:25,490 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 29 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 04:30:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:27,721 INFO L93 Difference]: Finished difference Result 271 states and 309 transitions. [2024-11-28 04:30:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:30:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 74 [2024-11-28 04:30:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:27,723 INFO L225 Difference]: With dead ends: 271 [2024-11-28 04:30:27,723 INFO L226 Difference]: Without dead ends: 213 [2024-11-28 04:30:27,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=184, Invalid=1298, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:30:27,725 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 58 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:27,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 384 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:30:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-28 04:30:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 166. [2024-11-28 04:30:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 140 states have (on average 1.1357142857142857) internal successors, (159), 139 states have internal predecessors, (159), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-28 04:30:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 190 transitions. [2024-11-28 04:30:27,829 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 190 transitions. Word has length 74 [2024-11-28 04:30:27,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:27,829 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 190 transitions. [2024-11-28 04:30:27,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.888888888888889) internal successors, (78), 25 states have internal predecessors, (78), 7 states have call successors, (11), 4 states have call predecessors, (11), 10 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 04:30:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 190 transitions. [2024-11-28 04:30:27,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:30:27,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:27,831 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:27,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:30:28,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:30:28,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:28,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:28,032 INFO L85 PathProgramCache]: Analyzing trace with hash 922432730, now seen corresponding path program 4 times [2024-11-28 04:30:28,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:28,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747876747] [2024-11-28 04:30:28,032 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:30:28,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:28,054 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:30:28,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:30:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747876747] [2024-11-28 04:30:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747876747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685123934] [2024-11-28 04:30:28,412 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:30:28,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:28,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:28,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:28,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:30:28,519 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:30:28,520 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:28,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:30:28,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:30:28,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 04:30:29,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685123934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:29,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:29,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 04:30:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452557231] [2024-11-28 04:30:29,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:29,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:30:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:29,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:30:29,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:30:29,234 INFO L87 Difference]: Start difference. First operand 166 states and 190 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:30,300 INFO L93 Difference]: Finished difference Result 301 states and 343 transitions. [2024-11-28 04:30:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:30:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2024-11-28 04:30:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:30,303 INFO L225 Difference]: With dead ends: 301 [2024-11-28 04:30:30,303 INFO L226 Difference]: Without dead ends: 238 [2024-11-28 04:30:30,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:30:30,305 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 54 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:30,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 334 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:30:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-28 04:30:30,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 208. [2024-11-28 04:30:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 169 states have internal predecessors, (191), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:30:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 236 transitions. [2024-11-28 04:30:30,426 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 236 transitions. Word has length 76 [2024-11-28 04:30:30,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:30,426 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 236 transitions. [2024-11-28 04:30:30,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 236 transitions. [2024-11-28 04:30:30,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:30:30,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:30,428 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:30,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:30:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:30,628 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:30,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash 521291482, now seen corresponding path program 5 times [2024-11-28 04:30:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417083813] [2024-11-28 04:30:30,629 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:30:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:30,660 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:30:30,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:30:30,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417083813] [2024-11-28 04:30:30,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417083813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305308573] [2024-11-28 04:30:30,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:30:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:30,992 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:30,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:30:31,164 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:30:31,164 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:31,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:30:31,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:30:31,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:30:32,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305308573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:32,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:32,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 04:30:32,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932563392] [2024-11-28 04:30:32,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:32,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:30:32,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:32,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:30:32,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:30:32,102 INFO L87 Difference]: Start difference. First operand 208 states and 236 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:32,860 INFO L93 Difference]: Finished difference Result 255 states and 285 transitions. [2024-11-28 04:30:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:30:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2024-11-28 04:30:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:32,863 INFO L225 Difference]: With dead ends: 255 [2024-11-28 04:30:32,863 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 04:30:32,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:30:32,864 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 17 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:32,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 219 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:30:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 04:30:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 159. [2024-11-28 04:30:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 133 states have internal predecessors, (148), 14 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 04:30:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 177 transitions. [2024-11-28 04:30:32,977 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 177 transitions. Word has length 76 [2024-11-28 04:30:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:32,978 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 177 transitions. [2024-11-28 04:30:32,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 177 transitions. [2024-11-28 04:30:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:30:32,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:32,979 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:32,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:30:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:30:33,184 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:33,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2085578202, now seen corresponding path program 6 times [2024-11-28 04:30:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252082189] [2024-11-28 04:30:33,184 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:30:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:33,244 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:30:33,244 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:30:33,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252082189] [2024-11-28 04:30:33,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252082189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:33,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804655301] [2024-11-28 04:30:33,567 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:30:33,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:33,569 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:33,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:30:34,008 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:30:34,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:34,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:30:34,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 04:30:34,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:30:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804655301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:34,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 04:30:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683951065] [2024-11-28 04:30:34,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:34,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:30:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:34,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:30:34,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:30:34,963 INFO L87 Difference]: Start difference. First operand 159 states and 177 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:36,446 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2024-11-28 04:30:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:30:36,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2024-11-28 04:30:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:36,448 INFO L225 Difference]: With dead ends: 186 [2024-11-28 04:30:36,448 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 04:30:36,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 161 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:30:36,449 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 50 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:36,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 318 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:30:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 04:30:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 169. [2024-11-28 04:30:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 145 states have (on average 1.096551724137931) internal successors, (159), 143 states have internal predecessors, (159), 14 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 04:30:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 188 transitions. [2024-11-28 04:30:36,554 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 188 transitions. Word has length 82 [2024-11-28 04:30:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:36,554 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 188 transitions. [2024-11-28 04:30:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 188 transitions. [2024-11-28 04:30:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:30:36,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:36,556 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:36,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:30:36,757 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1335717764, now seen corresponding path program 7 times [2024-11-28 04:30:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661933402] [2024-11-28 04:30:36,758 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:30:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-28 04:30:37,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661933402] [2024-11-28 04:30:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661933402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771020840] [2024-11-28 04:30:37,184 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:30:37,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:37,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:37,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:30:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:37,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:30:37,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-28 04:30:37,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-28 04:30:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771020840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:38,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-28 04:30:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693580382] [2024-11-28 04:30:38,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:38,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:30:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:38,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:30:38,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:30:38,372 INFO L87 Difference]: Start difference. First operand 169 states and 188 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:39,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:39,450 INFO L93 Difference]: Finished difference Result 265 states and 297 transitions. [2024-11-28 04:30:39,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:30:39,451 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-11-28 04:30:39,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:39,452 INFO L225 Difference]: With dead ends: 265 [2024-11-28 04:30:39,453 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 04:30:39,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:30:39,454 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 64 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:39,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 214 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:30:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 04:30:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2024-11-28 04:30:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 155 states have (on average 1.096774193548387) internal successors, (170), 153 states have internal predecessors, (170), 14 states have call successors, (14), 10 states have call predecessors, (14), 9 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2024-11-28 04:30:39,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-28 04:30:39,555 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 92 [2024-11-28 04:30:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:39,555 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-28 04:30:39,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:30:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-28 04:30:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:30:39,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:39,557 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:39,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:39,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:30:39,758 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:30:39,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:39,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1316011734, now seen corresponding path program 1 times [2024-11-28 04:30:39,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:30:39,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330757981] [2024-11-28 04:30:39,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:39,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:30:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:30:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150972153] [2024-11-28 04:30:39,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:39,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:39,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:39,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:39,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33d8c766-cbfd-458d-b574-6fde6ccc0d80/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:30:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:42,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 134 conjuncts are in the unsatisfiable core [2024-11-28 04:30:42,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:42,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:30:42,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 04:30:43,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:30:43,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-28 04:30:43,805 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:30:43,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-28 04:30:46,902 INFO L349 Elim1Store]: treesize reduction 208, result has 33.5 percent of original size [2024-11-28 04:30:46,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 142 [2024-11-28 04:30:52,124 INFO L349 Elim1Store]: treesize reduction 140, result has 38.1 percent of original size [2024-11-28 04:30:52,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 316 treesize of output 337 [2024-11-28 04:30:55,371 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2024-11-28 04:30:55,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 5 case distinctions, treesize of input 88 treesize of output 189 [2024-11-28 04:30:55,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,655 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:30:55,658 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:30:55,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,682 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:30:55,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 99 [2024-11-28 04:30:55,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:30:55,874 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:30:55,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 79 [2024-11-28 04:30:56,080 INFO L349 Elim1Store]: treesize reduction 36, result has 10.0 percent of original size [2024-11-28 04:30:56,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 49 [2024-11-28 04:30:56,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 43 [2024-11-28 04:31:05,958 INFO L349 Elim1Store]: treesize reduction 124, result has 35.8 percent of original size [2024-11-28 04:31:05,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 382 treesize of output 375 [2024-11-28 04:31:11,906 INFO L349 Elim1Store]: treesize reduction 643, result has 23.1 percent of original size [2024-11-28 04:31:11,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 52 case distinctions, treesize of input 492 treesize of output 761 [2024-11-28 04:31:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,567 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,569 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,573 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,574 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,574 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,575 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,588 INFO L349 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2024-11-28 04:31:24,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 68 treesize of output 59 [2024-11-28 04:31:24,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,674 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,674 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,675 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,676 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,695 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:24,707 INFO L349 Elim1Store]: treesize reduction 47, result has 2.1 percent of original size [2024-11-28 04:31:24,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 13 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 65 [2024-11-28 04:31:25,279 INFO L224 Elim1Store]: Index analysis took 131 ms [2024-11-28 04:31:25,326 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:25,327 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:25,344 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:25,634 INFO L349 Elim1Store]: treesize reduction 220, result has 2.2 percent of original size [2024-11-28 04:31:25,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 908 treesize of output 871 [2024-11-28 04:31:27,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,523 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,532 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,550 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,553 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,560 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,563 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,566 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,567 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,584 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 80 [2024-11-28 04:31:27,651 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,653 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,655 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,683 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,690 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,692 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,714 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,724 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 113 [2024-11-28 04:31:27,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,879 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,879 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,882 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,884 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,889 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,889 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,890 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,891 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:27,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:27,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 80 [2024-11-28 04:31:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,356 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,361 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,369 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,375 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,377 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,378 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:28,387 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,388 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:28,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 72 [2024-11-28 04:31:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:31:34,469 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:34,645 INFO L349 Elim1Store]: treesize reduction 134, result has 28.3 percent of original size [2024-11-28 04:31:34,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 70 [2024-11-28 04:32:21,690 WARN L286 SmtUtils]: Spent 46.92s on a formula simplification. DAG size of input: 864 DAG size of output: 231 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 04:32:21,691 INFO L349 Elim1Store]: treesize reduction 4661, result has 11.9 percent of original size [2024-11-28 04:32:21,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 12 select indices, 12 select index equivalence classes, 7 disjoint index pairs (out of 66 index pairs), introduced 19 new quantified variables, introduced 158 case distinctions, treesize of input 581 treesize of output 2159