./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.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_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/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_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/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_5696c61e-b411-42c2-bbf7-e50571592546/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 c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:49:52,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:49:52,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:49:52,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:49:52,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:49:52,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:49:52,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:49:52,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:49:52,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:49:52,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:49:52,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:49:52,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:49:52,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:49:52,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:49:52,695 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:49:52,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:49:52,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:49:52,697 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:52,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:52,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:52,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:52,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:49:52,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:49:52,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:49:52,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:52,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:49:52,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:49:52,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:49:52,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:49:52,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:49:52,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:49:52,702 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_5696c61e-b411-42c2-bbf7-e50571592546/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 -> c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 [2024-11-28 02:49:53,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:49:53,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:49:53,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:49:53,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:49:53,091 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:49:53,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2024-11-28 02:49:56,792 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/data/a2693748e/4d72529473684cb9bbd5c8457116b353/FLAG6185b77e7 [2024-11-28 02:49:57,141 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:49:57,142 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2024-11-28 02:49:57,171 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/data/a2693748e/4d72529473684cb9bbd5c8457116b353/FLAG6185b77e7 [2024-11-28 02:49:57,225 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/data/a2693748e/4d72529473684cb9bbd5c8457116b353 [2024-11-28 02:49:57,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:49:57,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:49:57,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:57,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:49:57,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:49:57,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c80a2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57, skipping insertion in model container [2024-11-28 02:49:57,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:49:57,452 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_5696c61e-b411-42c2-bbf7-e50571592546/sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c[2721,2734] [2024-11-28 02:49:57,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:57,469 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:49:57,494 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_5696c61e-b411-42c2-bbf7-e50571592546/sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c[2721,2734] [2024-11-28 02:49:57,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:49:57,513 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:49:57,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57 WrapperNode [2024-11-28 02:49:57,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:49:57,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:57,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:49:57,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:49:57,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,561 INFO L138 Inliner]: procedures = 16, calls = 62, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-11-28 02:49:57,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:49:57,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:49:57,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:49:57,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:49:57,575 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,618 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 6, 6, 6, 6, 6]. 19 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 1, 1, 1, 1, 1]. The 10 writes are split as follows [0, 2, 2, 2, 2, 2]. [2024-11-28 02:49:57,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,632 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,650 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:49:57,651 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:49:57,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:49:57,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:49:57,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (1/1) ... [2024-11-28 02:49:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:49:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:57,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:49:57,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:49:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:49:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:49:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:49:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:49:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:49:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2024-11-28 02:49:57,743 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2024-11-28 02:49:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2024-11-28 02:49:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2024-11-28 02:49:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:49:57,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:49:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:49:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_27_0 [2024-11-28 02:49:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_27_0 [2024-11-28 02:49:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2024-11-28 02:49:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2024-11-28 02:49:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:49:57,911 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:49:57,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:49:58,289 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 02:49:58,289 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:49:58,306 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:49:58,307 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:49:58,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:58 BoogieIcfgContainer [2024-11-28 02:49:58,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:49:58,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:49:58,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:49:58,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:49:58,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:49:57" (1/3) ... [2024-11-28 02:49:58,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2716c1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:58, skipping insertion in model container [2024-11-28 02:49:58,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:49:57" (2/3) ... [2024-11-28 02:49:58,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2716c1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:49:58, skipping insertion in model container [2024-11-28 02:49:58,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:49:58" (3/3) ... [2024-11-28 02:49:58,325 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_5.c [2024-11-28 02:49:58,349 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:49:58,351 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_5.c that has 6 procedures, 51 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:49:58,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:49:58,476 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;@5b8d9272, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:49:58,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:49:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:49:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 02:49:58,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:58,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:58,496 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:58,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1772465061, now seen corresponding path program 1 times [2024-11-28 02:49:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:58,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721365314] [2024-11-28 02:49:58,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721365314] [2024-11-28 02:49:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721365314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:59,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:59,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612080231] [2024-11-28 02:49:59,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:59,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:59,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:59,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:59,556 INFO L87 Difference]: Start difference. First operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:50:00,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:00,035 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2024-11-28 02:50:00,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:00,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2024-11-28 02:50:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:00,050 INFO L225 Difference]: With dead ends: 68 [2024-11-28 02:50:00,051 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 02:50:00,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:50:00,062 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:00,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:50:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 02:50:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-28 02:50:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-28 02:50:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-11-28 02:50:00,132 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 17 [2024-11-28 02:50:00,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:00,133 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-11-28 02:50:00,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:50:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-11-28 02:50:00,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 02:50:00,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:00,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:00,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:50:00,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:00,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:00,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1896614561, now seen corresponding path program 1 times [2024-11-28 02:50:00,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:00,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224726301] [2024-11-28 02:50:00,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:00,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:50:00,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224726301] [2024-11-28 02:50:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224726301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:00,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:50:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868544841] [2024-11-28 02:50:00,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:00,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:00,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:00,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:00,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:00,704 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:50:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:01,039 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2024-11-28 02:50:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-11-28 02:50:01,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:01,042 INFO L225 Difference]: With dead ends: 97 [2024-11-28 02:50:01,042 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 02:50:01,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:50:01,047 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:01,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 94 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:50:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 02:50:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-28 02:50:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 02:50:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-28 02:50:01,072 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 28 [2024-11-28 02:50:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:01,074 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-28 02:50:01,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:50:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-28 02:50:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 02:50:01,079 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:01,079 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:50:01,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:50:01,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:01,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 659087250, now seen corresponding path program 1 times [2024-11-28 02:50:01,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:01,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839131428] [2024-11-28 02:50:01,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:50:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839131428] [2024-11-28 02:50:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839131428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:50:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406092183] [2024-11-28 02:50:01,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:01,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:01,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:01,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:01,651 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 02:50:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:01,918 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2024-11-28 02:50:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:01,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2024-11-28 02:50:01,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:01,921 INFO L225 Difference]: With dead ends: 101 [2024-11-28 02:50:01,921 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 02:50:01,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:50:01,923 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:01,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 140 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 02:50:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-28 02:50:01,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 39 states have internal predecessors, (43), 10 states have call successors, (10), 5 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 02:50:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-11-28 02:50:01,937 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 39 [2024-11-28 02:50:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:01,938 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-11-28 02:50:01,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 02:50:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-11-28 02:50:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:50:01,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:01,940 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-28 02:50:01,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:50:01,941 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:01,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash -263259713, now seen corresponding path program 1 times [2024-11-28 02:50:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073546981] [2024-11-28 02:50:01,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:01,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:50:02,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:02,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073546981] [2024-11-28 02:50:02,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073546981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:02,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:02,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:50:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516789044] [2024-11-28 02:50:02,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:02,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:02,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:02,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:02,387 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:50:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:02,610 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2024-11-28 02:50:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2024-11-28 02:50:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:02,613 INFO L225 Difference]: With dead ends: 105 [2024-11-28 02:50:02,613 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 02:50:02,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:50:02,615 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:02,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 168 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:50:02,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 02:50:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-28 02:50:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 02:50:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-28 02:50:02,629 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 50 [2024-11-28 02:50:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:02,629 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-28 02:50:02,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:50:02,630 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-28 02:50:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 02:50:02,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:02,632 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:02,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:50:02,633 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:02,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -889035351, now seen corresponding path program 1 times [2024-11-28 02:50:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89349124] [2024-11-28 02:50:02,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:50:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:03,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89349124] [2024-11-28 02:50:03,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89349124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:03,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:03,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:50:03,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199969417] [2024-11-28 02:50:03,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:03,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:50:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:03,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:50:03,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:50:03,087 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:50:03,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:03,246 INFO L93 Difference]: Finished difference Result 109 states and 143 transitions. [2024-11-28 02:50:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:50:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) Word has length 61 [2024-11-28 02:50:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:03,249 INFO L225 Difference]: With dead ends: 109 [2024-11-28 02:50:03,249 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 02:50:03,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:50:03,251 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 16 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:03,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 174 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:50:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 02:50:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-28 02:50:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.25) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-28 02:50:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2024-11-28 02:50:03,263 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 61 [2024-11-28 02:50:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:03,264 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2024-11-28 02:50:03,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:50:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2024-11-28 02:50:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:50:03,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:03,266 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:03,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:50:03,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:03,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash -873526421, now seen corresponding path program 1 times [2024-11-28 02:50:03,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:03,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834460156] [2024-11-28 02:50:03,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:03,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:50:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834460156] [2024-11-28 02:50:04,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834460156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:04,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386213632] [2024-11-28 02:50:04,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:04,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:04,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:04,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:50:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:04,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:50:04,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:04,581 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 15 treesize of output 1 [2024-11-28 02:50:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:50:04,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:50:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386213632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:06,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:06,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2024-11-28 02:50:06,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625921989] [2024-11-28 02:50:06,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:06,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:50:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:06,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:50:06,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:50:06,189 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 24 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 20 states have internal predecessors, (68), 10 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (21), 7 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-28 02:50:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:07,262 INFO L93 Difference]: Finished difference Result 115 states and 150 transitions. [2024-11-28 02:50:07,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:50:07,263 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 20 states have internal predecessors, (68), 10 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (21), 7 states have call predecessors, (21), 10 states have call successors, (21) Word has length 66 [2024-11-28 02:50:07,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:07,265 INFO L225 Difference]: With dead ends: 115 [2024-11-28 02:50:07,265 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 02:50:07,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 02:50:07,267 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 43 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:07,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 506 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:50:07,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 02:50:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-28 02:50:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 38 states have (on average 1.236842105263158) internal successors, (47), 43 states have internal predecessors, (47), 10 states have call successors, (10), 5 states have call predecessors, (10), 12 states have return successors, (17), 12 states have call predecessors, (17), 10 states have call successors, (17) [2024-11-28 02:50:07,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-28 02:50:07,282 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 66 [2024-11-28 02:50:07,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:07,282 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-28 02:50:07,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 20 states have internal predecessors, (68), 10 states have call successors, (21), 6 states have call predecessors, (21), 8 states have return successors, (21), 7 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-28 02:50:07,283 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-28 02:50:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:50:07,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:07,285 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:07,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:50:07,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:07,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:07,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 361736368, now seen corresponding path program 2 times [2024-11-28 02:50:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632520172] [2024-11-28 02:50:07,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:07,577 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:07,577 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-28 02:50:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:08,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632520172] [2024-11-28 02:50:08,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632520172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:08,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394553181] [2024-11-28 02:50:08,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:08,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:08,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:08,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:50:08,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:08,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:08,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 02:50:08,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:08,794 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 15 treesize of output 1 [2024-11-28 02:50:09,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 02:50:09,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 02:50:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 02:50:09,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:10,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 02:50:11,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394553181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:11,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:50:11,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 22 [2024-11-28 02:50:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963842738] [2024-11-28 02:50:11,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:11,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:50:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:11,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:50:11,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:50:11,270 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 22 states, 18 states have (on average 4.277777777777778) internal successors, (77), 21 states have internal predecessors, (77), 12 states have call successors, (21), 3 states have call predecessors, (21), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-28 02:50:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:12,947 INFO L93 Difference]: Finished difference Result 154 states and 205 transitions. [2024-11-28 02:50:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:50:12,948 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.277777777777778) internal successors, (77), 21 states have internal predecessors, (77), 12 states have call successors, (21), 3 states have call predecessors, (21), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) Word has length 103 [2024-11-28 02:50:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:12,951 INFO L225 Difference]: With dead ends: 154 [2024-11-28 02:50:12,951 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 02:50:12,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 02:50:12,954 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 61 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:12,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 658 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:50:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 02:50:12,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2024-11-28 02:50:12,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 61 states have internal predecessors, (69), 13 states have call successors, (13), 7 states have call predecessors, (13), 18 states have return successors, (32), 19 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-28 02:50:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-11-28 02:50:12,978 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 103 [2024-11-28 02:50:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:12,978 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-11-28 02:50:12,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.277777777777778) internal successors, (77), 21 states have internal predecessors, (77), 12 states have call successors, (21), 3 states have call predecessors, (21), 9 states have return successors, (22), 10 states have call predecessors, (22), 12 states have call successors, (22) [2024-11-28 02:50:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-11-28 02:50:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 02:50:12,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:12,982 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-28 02:50:12,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:50:13,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:50:13,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:13,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 197746490, now seen corresponding path program 1 times [2024-11-28 02:50:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901724882] [2024-11-28 02:50:13,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-28 02:50:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901724882] [2024-11-28 02:50:13,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901724882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:13,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:13,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:50:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072270855] [2024-11-28 02:50:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:13,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:50:13,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:13,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:50:13,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:50:13,410 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 02:50:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:13,449 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2024-11-28 02:50:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:50:13,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 145 [2024-11-28 02:50:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:13,453 INFO L225 Difference]: With dead ends: 94 [2024-11-28 02:50:13,455 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 02:50:13,455 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 02:50:13,456 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:13,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 165 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:50:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 02:50:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2024-11-28 02:50:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 63 states have internal predecessors, (71), 13 states have call successors, (13), 7 states have call predecessors, (13), 18 states have return successors, (32), 19 states have call predecessors, (32), 13 states have call successors, (32) [2024-11-28 02:50:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2024-11-28 02:50:13,489 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 145 [2024-11-28 02:50:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:13,494 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2024-11-28 02:50:13,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 02:50:13,494 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2024-11-28 02:50:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 02:50:13,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:13,497 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-28 02:50:13,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:50:13,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:13,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash 197748412, now seen corresponding path program 1 times [2024-11-28 02:50:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:13,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143283333] [2024-11-28 02:50:13,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 57 proven. 108 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-28 02:50:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143283333] [2024-11-28 02:50:14,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143283333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:14,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563116350] [2024-11-28 02:50:14,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:14,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:14,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:14,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:50:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:15,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:50:15,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:15,152 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 15 treesize of output 1 [2024-11-28 02:50:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 236 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-28 02:50:15,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 55 proven. 113 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-28 02:50:18,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563116350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:18,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:18,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 14] total 28 [2024-11-28 02:50:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824186008] [2024-11-28 02:50:18,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:50:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:18,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:50:18,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:50:18,463 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand has 28 states, 20 states have (on average 4.05) internal successors, (81), 24 states have internal predecessors, (81), 10 states have call successors, (27), 6 states have call predecessors, (27), 9 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-28 02:50:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:19,084 INFO L93 Difference]: Finished difference Result 181 states and 255 transitions. [2024-11-28 02:50:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:50:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 20 states have (on average 4.05) internal successors, (81), 24 states have internal predecessors, (81), 10 states have call successors, (27), 6 states have call predecessors, (27), 9 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) Word has length 145 [2024-11-28 02:50:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:19,087 INFO L225 Difference]: With dead ends: 181 [2024-11-28 02:50:19,087 INFO L226 Difference]: Without dead ends: 94 [2024-11-28 02:50:19,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:50:19,094 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:19,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 544 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:50:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-28 02:50:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-28 02:50:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 65 states have internal predecessors, (73), 13 states have call successors, (13), 7 states have call predecessors, (13), 20 states have return successors, (34), 21 states have call predecessors, (34), 13 states have call successors, (34) [2024-11-28 02:50:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2024-11-28 02:50:19,116 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 145 [2024-11-28 02:50:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:19,116 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2024-11-28 02:50:19,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 20 states have (on average 4.05) internal successors, (81), 24 states have internal predecessors, (81), 10 states have call successors, (27), 6 states have call predecessors, (27), 9 states have return successors, (30), 7 states have call predecessors, (30), 10 states have call successors, (30) [2024-11-28 02:50:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2024-11-28 02:50:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 02:50:19,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:19,129 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-28 02:50:19,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:50:19,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:50:19,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:19,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1804617540, now seen corresponding path program 2 times [2024-11-28 02:50:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:19,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981320912] [2024-11-28 02:50:19,332 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:19,414 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:19,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 18 proven. 389 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-11-28 02:50:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981320912] [2024-11-28 02:50:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981320912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029786505] [2024-11-28 02:50:21,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:21,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:21,510 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:21,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:50:21,884 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:21,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:21,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:50:21,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:21,946 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 02:50:22,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 02:50:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2024-11-28 02:50:22,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:27,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029786505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:50:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-28 02:50:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273132896] [2024-11-28 02:50:27,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:50:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:27,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:50:27,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:50:27,062 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 23 states, 19 states have (on average 3.789473684210526) internal successors, (72), 22 states have internal predecessors, (72), 9 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-28 02:50:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:28,277 INFO L93 Difference]: Finished difference Result 227 states and 329 transitions. [2024-11-28 02:50:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 02:50:28,278 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 3.789473684210526) internal successors, (72), 22 states have internal predecessors, (72), 9 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) Word has length 185 [2024-11-28 02:50:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:28,282 INFO L225 Difference]: With dead ends: 227 [2024-11-28 02:50:28,282 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 02:50:28,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=243, Invalid=1737, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:50:28,286 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:28,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 391 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:50:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 02:50:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2024-11-28 02:50:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 80 states have internal predecessors, (92), 15 states have call successors, (15), 9 states have call predecessors, (15), 26 states have return successors, (54), 28 states have call predecessors, (54), 15 states have call successors, (54) [2024-11-28 02:50:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2024-11-28 02:50:28,325 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 185 [2024-11-28 02:50:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:28,326 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2024-11-28 02:50:28,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 3.789473684210526) internal successors, (72), 22 states have internal predecessors, (72), 9 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-28 02:50:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2024-11-28 02:50:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-28 02:50:28,330 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:28,330 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 20, 20, 20, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-28 02:50:28,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:50:28,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:50:28,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1060448766, now seen corresponding path program 1 times [2024-11-28 02:50:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:28,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609828082] [2024-11-28 02:50:28,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:28,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 20 proven. 559 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2024-11-28 02:50:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609828082] [2024-11-28 02:50:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609828082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702207559] [2024-11-28 02:50:31,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:31,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:31,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:31,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:31,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:50:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:31,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:50:31,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:31,546 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 02:50:31,638 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_23_to_24_0_~a.offset Int)) (= |c_#memory_int#1| (store |c_old(#memory_int#1)| |c_func_to_recursive_line_23_to_24_0_#in~a.base| (let ((.cse0 (select |c_old(#memory_int#1)| |c_func_to_recursive_line_23_to_24_0_#in~a.base|))) (store .cse0 func_to_recursive_line_23_to_24_0_~a.offset (+ (select .cse0 func_to_recursive_line_23_to_24_0_~a.offset) 1)))))) is different from true [2024-11-28 02:50:31,700 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-28 02:50:31,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2024-11-28 02:50:31,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-11-28 02:50:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1392 trivial. 2 not checked. [2024-11-28 02:50:31,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702207559] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:32,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:50:32,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 21 [2024-11-28 02:50:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636334855] [2024-11-28 02:50:32,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:32,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 02:50:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:32,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 02:50:32,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=392, Unknown=1, NotChecked=40, Total=506 [2024-11-28 02:50:32,082 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand has 21 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 19 states have internal predecessors, (66), 8 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (24), 10 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-28 02:50:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:32,868 INFO L93 Difference]: Finished difference Result 253 states and 399 transitions. [2024-11-28 02:50:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:50:32,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 19 states have internal predecessors, (66), 8 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (24), 10 states have call predecessors, (24), 8 states have call successors, (24) Word has length 205 [2024-11-28 02:50:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:32,871 INFO L225 Difference]: With dead ends: 253 [2024-11-28 02:50:32,871 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 02:50:32,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=888, Unknown=1, NotChecked=62, Total=1122 [2024-11-28 02:50:32,877 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 58 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:32,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 223 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 538 Invalid, 0 Unknown, 182 Unchecked, 0.5s Time] [2024-11-28 02:50:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 02:50:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 130. [2024-11-28 02:50:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 86 states have internal predecessors, (100), 15 states have call successors, (15), 10 states have call predecessors, (15), 30 states have return successors, (70), 33 states have call predecessors, (70), 15 states have call successors, (70) [2024-11-28 02:50:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 185 transitions. [2024-11-28 02:50:32,919 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 185 transitions. Word has length 205 [2024-11-28 02:50:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:32,920 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 185 transitions. [2024-11-28 02:50:32,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 19 states have internal predecessors, (66), 8 states have call successors, (19), 3 states have call predecessors, (19), 10 states have return successors, (24), 10 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-28 02:50:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 185 transitions. [2024-11-28 02:50:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-28 02:50:32,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:32,926 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2024-11-28 02:50:32,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:50:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:50:33,130 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:33,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1738858688, now seen corresponding path program 1 times [2024-11-28 02:50:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185131490] [2024-11-28 02:50:33,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 11 proven. 60 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2024-11-28 02:50:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185131490] [2024-11-28 02:50:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185131490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280772511] [2024-11-28 02:50:34,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:34,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:34,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:34,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:50:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:35,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 02:50:35,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:35,036 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 02:50:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2024-11-28 02:50:35,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2024-11-28 02:50:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280772511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:38,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 14] total 28 [2024-11-28 02:50:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363090184] [2024-11-28 02:50:38,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:38,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:50:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:38,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:50:38,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:50:38,582 INFO L87 Difference]: Start difference. First operand 130 states and 185 transitions. Second operand has 28 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (25), 6 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-28 02:50:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:39,042 INFO L93 Difference]: Finished difference Result 259 states and 416 transitions. [2024-11-28 02:50:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:50:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (25), 6 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) Word has length 225 [2024-11-28 02:50:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:39,045 INFO L225 Difference]: With dead ends: 259 [2024-11-28 02:50:39,048 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 02:50:39,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 436 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:50:39,052 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 70 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:39,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 378 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:50:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 02:50:39,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-28 02:50:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.186046511627907) internal successors, (102), 88 states have internal predecessors, (102), 15 states have call successors, (15), 10 states have call predecessors, (15), 32 states have return successors, (72), 35 states have call predecessors, (72), 15 states have call successors, (72) [2024-11-28 02:50:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 189 transitions. [2024-11-28 02:50:39,079 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 189 transitions. Word has length 225 [2024-11-28 02:50:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:39,080 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 189 transitions. [2024-11-28 02:50:39,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (25), 6 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2024-11-28 02:50:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 189 transitions. [2024-11-28 02:50:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-11-28 02:50:39,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:39,093 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 48, 48, 48, 10, 10, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1] [2024-11-28 02:50:39,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:50:39,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:39,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:39,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2006197376, now seen corresponding path program 2 times [2024-11-28 02:50:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79209861] [2024-11-28 02:50:39,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:39,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:39,454 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7575 backedges. 18 proven. 179 refuted. 0 times theorem prover too weak. 7378 trivial. 0 not checked. [2024-11-28 02:50:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:42,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79209861] [2024-11-28 02:50:42,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79209861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:42,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774501368] [2024-11-28 02:50:42,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:42,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:42,632 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:42,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:50:43,210 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:43,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:43,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-28 02:50:43,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:43,325 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 02:50:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7575 backedges. 3869 proven. 24 refuted. 0 times theorem prover too weak. 3682 trivial. 0 not checked. [2024-11-28 02:50:43,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7575 backedges. 8 proven. 209 refuted. 0 times theorem prover too weak. 7358 trivial. 0 not checked. [2024-11-28 02:50:50,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774501368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:50,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:50,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 22] total 44 [2024-11-28 02:50:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604981075] [2024-11-28 02:50:50,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:50,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 02:50:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:50,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 02:50:50,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1570, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:50:50,437 INFO L87 Difference]: Start difference. First operand 134 states and 189 transitions. Second operand has 44 states, 33 states have (on average 3.121212121212121) internal successors, (103), 38 states have internal predecessors, (103), 21 states have call successors, (37), 8 states have call predecessors, (37), 13 states have return successors, (42), 17 states have call predecessors, (42), 21 states have call successors, (42) [2024-11-28 02:50:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:51,318 INFO L93 Difference]: Finished difference Result 270 states and 426 transitions. [2024-11-28 02:50:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:50:51,319 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 3.121212121212121) internal successors, (103), 38 states have internal predecessors, (103), 21 states have call successors, (37), 8 states have call predecessors, (37), 13 states have return successors, (42), 17 states have call predecessors, (42), 21 states have call successors, (42) Word has length 389 [2024-11-28 02:50:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:51,324 INFO L225 Difference]: With dead ends: 270 [2024-11-28 02:50:51,325 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 02:50:51,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 755 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=480, Invalid=2382, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 02:50:51,328 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:51,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 560 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:50:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 02:50:51,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2024-11-28 02:50:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 15 states have call successors, (15), 10 states have call predecessors, (15), 34 states have return successors, (74), 37 states have call predecessors, (74), 15 states have call successors, (74) [2024-11-28 02:50:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2024-11-28 02:50:51,358 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 389 [2024-11-28 02:50:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2024-11-28 02:50:51,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 3.121212121212121) internal successors, (103), 38 states have internal predecessors, (103), 21 states have call successors, (37), 8 states have call predecessors, (37), 13 states have return successors, (42), 17 states have call predecessors, (42), 21 states have call successors, (42) [2024-11-28 02:50:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2024-11-28 02:50:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2024-11-28 02:50:51,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:51,380 INFO L218 NwaCegarLoop]: trace histogram [84, 84, 72, 72, 72, 14, 14, 12, 12, 12, 12, 12, 12, 12, 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, 1, 1] [2024-11-28 02:50:51,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:50:51,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:51,581 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:51,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1889200448, now seen corresponding path program 3 times [2024-11-28 02:50:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:51,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117909819] [2024-11-28 02:50:51,582 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:51,657 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:50:51,657 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17085 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17082 trivial. 0 not checked. [2024-11-28 02:50:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117909819] [2024-11-28 02:50:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117909819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:50:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615961218] [2024-11-28 02:50:51,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:50:51,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:50:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:50:51,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:50:52,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:50:52,442 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:50:52,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:50:52,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:50:52,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:50:52,466 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 02:50:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17085 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17082 trivial. 0 not checked. [2024-11-28 02:50:52,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:50:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17085 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17081 trivial. 0 not checked. [2024-11-28 02:50:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615961218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:50:56,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:50:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-28 02:50:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233934077] [2024-11-28 02:50:56,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:50:56,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:50:56,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:56,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:50:56,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:50:56,842 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 22 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 02:50:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:57,429 INFO L93 Difference]: Finished difference Result 167 states and 240 transitions. [2024-11-28 02:50:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:50:57,431 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 553 [2024-11-28 02:50:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:57,439 INFO L225 Difference]: With dead ends: 167 [2024-11-28 02:50:57,439 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 02:50:57,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:50:57,441 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:57,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 239 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:50:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 02:50:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-28 02:50:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 92 states have internal predecessors, (105), 15 states have call successors, (15), 10 states have call predecessors, (15), 37 states have return successors, (83), 39 states have call predecessors, (83), 15 states have call successors, (83) [2024-11-28 02:50:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2024-11-28 02:50:57,473 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 553 [2024-11-28 02:50:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:57,475 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2024-11-28 02:50:57,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-28 02:50:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2024-11-28 02:50:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2140 [2024-11-28 02:50:57,518 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:57,519 INFO L218 NwaCegarLoop]: trace histogram [336, 336, 288, 288, 288, 56, 56, 48, 48, 48, 48, 48, 48, 48, 11, 11, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:57,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:50:57,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:50:57,720 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:57,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash -138027206, now seen corresponding path program 2 times [2024-11-28 02:50:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799255579] [2024-11-28 02:50:57,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:50:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:59,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:50:59,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 276398 backedges. 16 proven. 190 refuted. 0 times theorem prover too weak. 276192 trivial. 0 not checked. [2024-11-28 02:51:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799255579] [2024-11-28 02:51:20,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799255579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015307045] [2024-11-28 02:51:20,914 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:51:20,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:20,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:20,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:20,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:51:23,448 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:51:23,448 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:23,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 9065 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 02:51:23,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:23,573 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 02:51:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 276398 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 276383 trivial. 0 not checked. [2024-11-28 02:51:24,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:51:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 276398 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 276365 trivial. 0 not checked. [2024-11-28 02:51:41,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015307045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:51:41,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:51:41,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 18] total 40 [2024-11-28 02:51:41,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271328071] [2024-11-28 02:51:41,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:51:41,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 02:51:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:51:41,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 02:51:41,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1355, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:51:41,033 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 40 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 34 states have internal predecessors, (79), 17 states have call successors, (27), 7 states have call predecessors, (27), 14 states have return successors, (31), 17 states have call predecessors, (31), 17 states have call successors, (31) [2024-11-28 02:51:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:51:42,312 INFO L93 Difference]: Finished difference Result 252 states and 368 transitions. [2024-11-28 02:51:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:51:42,313 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 34 states have internal predecessors, (79), 17 states have call successors, (27), 7 states have call predecessors, (27), 14 states have return successors, (31), 17 states have call predecessors, (31), 17 states have call successors, (31) Word has length 2139 [2024-11-28 02:51:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:51:42,317 INFO L225 Difference]: With dead ends: 252 [2024-11-28 02:51:42,317 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 02:51:42,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4310 GetRequests, 4259 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=393, Invalid=2363, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:51:42,320 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 123 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:51:42,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 412 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:51:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 02:51:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-28 02:51:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 74 states have internal predecessors, (82), 11 states have call successors, (11), 7 states have call predecessors, (11), 32 states have return successors, (47), 33 states have call predecessors, (47), 11 states have call successors, (47) [2024-11-28 02:51:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 140 transitions. [2024-11-28 02:51:42,338 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 140 transitions. Word has length 2139 [2024-11-28 02:51:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:51:42,340 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 140 transitions. [2024-11-28 02:51:42,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 34 states have internal predecessors, (79), 17 states have call successors, (27), 7 states have call predecessors, (27), 14 states have return successors, (31), 17 states have call predecessors, (31), 17 states have call successors, (31) [2024-11-28 02:51:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 140 transitions. [2024-11-28 02:51:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4218 [2024-11-28 02:51:42,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:51:42,553 INFO L218 NwaCegarLoop]: trace histogram [672, 672, 576, 576, 576, 112, 112, 96, 96, 96, 96, 96, 96, 96, 20, 20, 16, 16, 16, 16, 16, 16, 16, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:51:42,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:51:42,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:42,754 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:51:42,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:51:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1524861327, now seen corresponding path program 3 times [2024-11-28 02:51:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:51:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008764851] [2024-11-28 02:51:42,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:51:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:51:43,172 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:51:43,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1107276 backedges. 74 proven. 3 refuted. 0 times theorem prover too weak. 1107199 trivial. 0 not checked. [2024-11-28 02:51:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:51:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008764851] [2024-11-28 02:51:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008764851] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:51:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210173030] [2024-11-28 02:51:43,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:51:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:51:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:51:43,542 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:51:43,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:51:45,473 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:51:45,473 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:51:45,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:51:45,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:51:45,846 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 02:51:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1107276 backedges. 77 proven. 3 refuted. 0 times theorem prover too weak. 1107196 trivial. 0 not checked. [2024-11-28 02:51:46,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:52:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1107276 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 1107198 trivial. 0 not checked. [2024-11-28 02:52:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210173030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:52:21,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:52:21,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2024-11-28 02:52:21,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522676462] [2024-11-28 02:52:21,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:52:21,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:52:21,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:21,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:52:21,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:52:21,352 INFO L87 Difference]: Start difference. First operand 115 states and 140 transitions. Second operand has 23 states, 17 states have (on average 3.764705882352941) internal successors, (64), 20 states have internal predecessors, (64), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-28 02:52:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:21,881 INFO L93 Difference]: Finished difference Result 211 states and 259 transitions. [2024-11-28 02:52:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:52:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 3.764705882352941) internal successors, (64), 20 states have internal predecessors, (64), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 4217 [2024-11-28 02:52:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:21,886 INFO L225 Difference]: With dead ends: 211 [2024-11-28 02:52:21,886 INFO L226 Difference]: Without dead ends: 101 [2024-11-28 02:52:21,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8448 GetRequests, 8421 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:52:21,888 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:21,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 224 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:52:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-28 02:52:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-28 02:52:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 66 states have internal predecessors, (71), 10 states have call successors, (10), 6 states have call predecessors, (10), 28 states have return successors, (33), 28 states have call predecessors, (33), 10 states have call successors, (33) [2024-11-28 02:52:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2024-11-28 02:52:21,905 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 4217 [2024-11-28 02:52:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:21,908 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2024-11-28 02:52:21,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 3.764705882352941) internal successors, (64), 20 states have internal predecessors, (64), 11 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-28 02:52:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2024-11-28 02:52:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12530 [2024-11-28 02:52:23,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:23,075 INFO L218 NwaCegarLoop]: trace histogram [2016, 2016, 1728, 1728, 1728, 336, 336, 288, 288, 288, 288, 288, 288, 288, 60, 60, 48, 48, 48, 48, 48, 48, 48, 16, 16, 12, 12, 12, 12, 12, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:23,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:52:23,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:23,276 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:23,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash 704283481, now seen corresponding path program 3 times [2024-11-28 02:52:23,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:23,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155560450] [2024-11-28 02:52:23,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:24,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:52:24,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9976912 backedges. 296 proven. 17 refuted. 0 times theorem prover too weak. 9976599 trivial. 0 not checked. [2024-11-28 02:52:26,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:26,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155560450] [2024-11-28 02:52:26,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155560450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:26,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253780629] [2024-11-28 02:52:26,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:26,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:26,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:26,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:52:31,108 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 02:52:31,108 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:31,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-28 02:52:31,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:31,505 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 02:52:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9976912 backedges. 290 proven. 15 refuted. 0 times theorem prover too weak. 9976607 trivial. 0 not checked. [2024-11-28 02:52:32,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:54:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9976912 backedges. 290 proven. 33 refuted. 0 times theorem prover too weak. 9976589 trivial. 0 not checked. [2024-11-28 02:54:07,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253780629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:54:07,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:54:07,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 18] total 33 [2024-11-28 02:54:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323602566] [2024-11-28 02:54:07,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:54:07,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:54:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:07,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:54:07,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:54:07,931 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 33 states, 25 states have (on average 2.92) internal successors, (73), 28 states have internal predecessors, (73), 15 states have call successors, (25), 7 states have call predecessors, (25), 11 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2024-11-28 02:54:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:08,708 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2024-11-28 02:54:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:54:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 2.92) internal successors, (73), 28 states have internal predecessors, (73), 15 states have call successors, (25), 7 states have call predecessors, (25), 11 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) Word has length 12529 [2024-11-28 02:54:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:08,718 INFO L225 Difference]: With dead ends: 201 [2024-11-28 02:54:08,719 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 02:54:08,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25082 GetRequests, 25042 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=310, Invalid=1250, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:54:08,721 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:08,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 464 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:54:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 02:54:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-28 02:54:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.140625) internal successors, (73), 68 states have internal predecessors, (73), 10 states have call successors, (10), 6 states have call predecessors, (10), 30 states have return successors, (35), 30 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-28 02:54:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2024-11-28 02:54:08,742 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 12529 [2024-11-28 02:54:08,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:08,751 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2024-11-28 02:54:08,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 2.92) internal successors, (73), 28 states have internal predecessors, (73), 15 states have call successors, (25), 7 states have call predecessors, (25), 11 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2024-11-28 02:54:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2024-11-28 02:54:11,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20842 [2024-11-28 02:54:11,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:11,290 INFO L218 NwaCegarLoop]: trace histogram [3360, 3360, 2880, 2880, 2880, 560, 560, 480, 480, 480, 480, 480, 480, 480, 100, 100, 80, 80, 80, 80, 80, 80, 80, 24, 24, 20, 20, 20, 20, 20, 20, 20, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:11,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:54:11,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5696c61e-b411-42c2-bbf7-e50571592546/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:54:11,491 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:11,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash -792347095, now seen corresponding path program 4 times [2024-11-28 02:54:11,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:11,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852966000] [2024-11-28 02:54:11,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:54:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:37,264 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:54:37,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat