./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/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_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/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_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/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 cec5185ce7c24944b55ad80283733eba2f5aa0d5d2e63517a5d5bc6bcf21ed8e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:19,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:20,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:49:20,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:20,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:20,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:20,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:20,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:20,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:20,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:20,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:20,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:20,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:20,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:20,123 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:20,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:20,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:20,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:20,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:20,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:20,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:20,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:20,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:20,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:20,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:20,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:20,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:20,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:20,128 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_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/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 -> cec5185ce7c24944b55ad80283733eba2f5aa0d5d2e63517a5d5bc6bcf21ed8e [2024-11-27 19:49:20,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:20,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:20,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:20,493 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:20,494 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:20,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-27 19:49:23,460 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/data/644ca5c81/88483588c87d4276ab61a7e31657704f/FLAGc8f9b0694 [2024-11-27 19:49:23,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:23,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-27 19:49:23,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/data/644ca5c81/88483588c87d4276ab61a7e31657704f/FLAGc8f9b0694 [2024-11-27 19:49:24,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/data/644ca5c81/88483588c87d4276ab61a7e31657704f [2024-11-27 19:49:24,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:24,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:24,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:24,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:24,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:24,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea01bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24, skipping insertion in model container [2024-11-27 19:49:24,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:24,261 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_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i[915,928] [2024-11-27 19:49:24,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:24,445 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:24,455 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_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i[915,928] [2024-11-27 19:49:24,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:24,543 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:24,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24 WrapperNode [2024-11-27 19:49:24,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:24,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:24,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:24,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:24,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,654 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 521 [2024-11-27 19:49:24,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:24,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:24,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:24,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:24,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,727 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:49:24,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,801 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:24,802 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:24,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:24,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:24,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:24,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:24,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:24,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 19:49:24,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 19:49:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:24,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:25,062 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:25,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:26,170 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:26,170 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:26,194 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:26,195 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:49:26,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:26 BoogieIcfgContainer [2024-11-27 19:49:26,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:26,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:26,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:26,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:26,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:24" (1/3) ... [2024-11-27 19:49:26,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f912127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:26, skipping insertion in model container [2024-11-27 19:49:26,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (2/3) ... [2024-11-27 19:49:26,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f912127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:26, skipping insertion in model container [2024-11-27 19:49:26,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:26" (3/3) ... [2024-11-27 19:49:26,207 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-27 19:49:26,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:26,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-6.i that has 2 procedures, 217 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:49:26,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:26,366 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;@4d94fbd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:26,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:49:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-27 19:49:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-27 19:49:26,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:26,407 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1] [2024-11-27 19:49:26,408 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:26,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -792079429, now seen corresponding path program 1 times [2024-11-27 19:49:26,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164418847] [2024-11-27 19:49:26,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2024-11-27 19:49:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:27,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164418847] [2024-11-27 19:49:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164418847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:27,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12069147] [2024-11-27 19:49:27,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:27,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:27,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:27,233 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:27,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:49:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:27,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 19:49:27,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2024-11-27 19:49:27,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 19:49:27,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12069147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:27,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 19:49:27,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 19:49:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167576117] [2024-11-27 19:49:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:27,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 19:49:27,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:27,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 19:49:27,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:27,829 INFO L87 Difference]: Start difference. First operand has 217 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-27 19:49:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:27,895 INFO L93 Difference]: Finished difference Result 427 states and 785 transitions. [2024-11-27 19:49:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 19:49:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 448 [2024-11-27 19:49:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:27,922 INFO L225 Difference]: With dead ends: 427 [2024-11-27 19:49:27,922 INFO L226 Difference]: Without dead ends: 213 [2024-11-27 19:49:27,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 19:49:27,935 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:27,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-27 19:49:28,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-27 19:49:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-27 19:49:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 349 transitions. [2024-11-27 19:49:28,043 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 349 transitions. Word has length 448 [2024-11-27 19:49:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:28,044 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 349 transitions. [2024-11-27 19:49:28,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-27 19:49:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 349 transitions. [2024-11-27 19:49:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-27 19:49:28,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:28,065 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:28,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:49:28,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:28,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:28,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash -614097462, now seen corresponding path program 1 times [2024-11-27 19:49:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492156246] [2024-11-27 19:49:28,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492156246] [2024-11-27 19:49:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492156246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:29,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:29,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451904735] [2024-11-27 19:49:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:29,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:29,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:29,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:29,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:29,028 INFO L87 Difference]: Start difference. First operand 213 states and 349 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:29,174 INFO L93 Difference]: Finished difference Result 529 states and 870 transitions. [2024-11-27 19:49:29,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:29,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 449 [2024-11-27 19:49:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:29,183 INFO L225 Difference]: With dead ends: 529 [2024-11-27 19:49:29,183 INFO L226 Difference]: Without dead ends: 319 [2024-11-27 19:49:29,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:29,189 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 165 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:29,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 757 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-27 19:49:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2024-11-27 19:49:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 229 states have (on average 1.519650655021834) internal successors, (348), 230 states have internal predecessors, (348), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-27 19:49:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 516 transitions. [2024-11-27 19:49:29,260 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 516 transitions. Word has length 449 [2024-11-27 19:49:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:29,264 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 516 transitions. [2024-11-27 19:49:29,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 516 transitions. [2024-11-27 19:49:29,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-27 19:49:29,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:29,274 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:29,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:49:29,275 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:29,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1125511341, now seen corresponding path program 1 times [2024-11-27 19:49:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555741640] [2024-11-27 19:49:29,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:29,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555741640] [2024-11-27 19:49:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555741640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928334192] [2024-11-27 19:49:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:29,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:29,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:29,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:29,740 INFO L87 Difference]: Start difference. First operand 316 states and 516 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:29,854 INFO L93 Difference]: Finished difference Result 826 states and 1344 transitions. [2024-11-27 19:49:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:29,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 451 [2024-11-27 19:49:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:29,867 INFO L225 Difference]: With dead ends: 826 [2024-11-27 19:49:29,867 INFO L226 Difference]: Without dead ends: 513 [2024-11-27 19:49:29,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:29,869 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 208 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:29,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 848 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-27 19:49:29,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 510. [2024-11-27 19:49:29,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 363 states have (on average 1.4820936639118458) internal successors, (538), 366 states have internal predecessors, (538), 142 states have call successors, (142), 4 states have call predecessors, (142), 4 states have return successors, (142), 139 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-27 19:49:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 822 transitions. [2024-11-27 19:49:29,982 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 822 transitions. Word has length 451 [2024-11-27 19:49:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:29,986 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 822 transitions. [2024-11-27 19:49:29,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 822 transitions. [2024-11-27 19:49:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-27 19:49:29,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:29,997 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:29,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:49:29,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:29,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2058517161, now seen corresponding path program 1 times [2024-11-27 19:49:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691099199] [2024-11-27 19:49:30,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:30,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:31,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:31,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691099199] [2024-11-27 19:49:31,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691099199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:31,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:31,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:31,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922843545] [2024-11-27 19:49:31,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:31,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:31,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:31,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:31,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:31,022 INFO L87 Difference]: Start difference. First operand 510 states and 822 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:31,462 INFO L93 Difference]: Finished difference Result 1400 states and 2267 transitions. [2024-11-27 19:49:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:31,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 452 [2024-11-27 19:49:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:31,470 INFO L225 Difference]: With dead ends: 1400 [2024-11-27 19:49:31,470 INFO L226 Difference]: Without dead ends: 893 [2024-11-27 19:49:31,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:31,473 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 310 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:31,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1028 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:49:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-27 19:49:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 827. [2024-11-27 19:49:31,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 607 states have (on average 1.5107084019769357) internal successors, (917), 610 states have internal predecessors, (917), 213 states have call successors, (213), 6 states have call predecessors, (213), 6 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-27 19:49:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1343 transitions. [2024-11-27 19:49:31,631 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1343 transitions. Word has length 452 [2024-11-27 19:49:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:31,633 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1343 transitions. [2024-11-27 19:49:31,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:31,633 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1343 transitions. [2024-11-27 19:49:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-27 19:49:31,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:31,644 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:31,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:49:31,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:31,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:31,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1085829748, now seen corresponding path program 1 times [2024-11-27 19:49:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:31,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269861750] [2024-11-27 19:49:31,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:31,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269861750] [2024-11-27 19:49:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269861750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122644877] [2024-11-27 19:49:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:32,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:32,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:32,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:32,258 INFO L87 Difference]: Start difference. First operand 827 states and 1343 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:32,405 INFO L93 Difference]: Finished difference Result 1985 states and 3219 transitions. [2024-11-27 19:49:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:32,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-27 19:49:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:32,415 INFO L225 Difference]: With dead ends: 1985 [2024-11-27 19:49:32,415 INFO L226 Difference]: Without dead ends: 1418 [2024-11-27 19:49:32,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:32,418 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 340 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:32,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 960 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2024-11-27 19:49:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 875. [2024-11-27 19:49:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 655 states have (on average 1.5038167938931297) internal successors, (985), 658 states have internal predecessors, (985), 213 states have call successors, (213), 6 states have call predecessors, (213), 6 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-27 19:49:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1411 transitions. [2024-11-27 19:49:32,595 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1411 transitions. Word has length 453 [2024-11-27 19:49:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:32,597 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1411 transitions. [2024-11-27 19:49:32,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1411 transitions. [2024-11-27 19:49:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-27 19:49:32,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:32,607 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:32,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:49:32,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:32,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 951816242, now seen corresponding path program 1 times [2024-11-27 19:49:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175655856] [2024-11-27 19:49:32,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175655856] [2024-11-27 19:49:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175655856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:34,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:49:34,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240745459] [2024-11-27 19:49:34,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:34,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:49:34,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:34,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:49:34,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:49:34,082 INFO L87 Difference]: Start difference. First operand 875 states and 1411 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:34,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:34,855 INFO L93 Difference]: Finished difference Result 2148 states and 3469 transitions. [2024-11-27 19:49:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:49:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-27 19:49:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:34,868 INFO L225 Difference]: With dead ends: 2148 [2024-11-27 19:49:34,868 INFO L226 Difference]: Without dead ends: 1585 [2024-11-27 19:49:34,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:34,872 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 197 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:34,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 867 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:49:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-27 19:49:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1583. [2024-11-27 19:49:35,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1217 states have (on average 1.5094494658997535) internal successors, (1837), 1223 states have internal predecessors, (1837), 355 states have call successors, (355), 10 states have call predecessors, (355), 10 states have return successors, (355), 349 states have call predecessors, (355), 355 states have call successors, (355) [2024-11-27 19:49:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2547 transitions. [2024-11-27 19:49:35,097 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2547 transitions. Word has length 453 [2024-11-27 19:49:35,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:35,098 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2547 transitions. [2024-11-27 19:49:35,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:35,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2547 transitions. [2024-11-27 19:49:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-27 19:49:35,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:35,108 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:35,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:49:35,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:35,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash -737127500, now seen corresponding path program 1 times [2024-11-27 19:49:35,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:35,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418495877] [2024-11-27 19:49:35,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:35,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-27 19:49:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418495877] [2024-11-27 19:49:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418495877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:36,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:36,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 19:49:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283966852] [2024-11-27 19:49:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:36,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:49:36,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:36,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:49:36,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:49:36,681 INFO L87 Difference]: Start difference. First operand 1583 states and 2547 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:37,919 INFO L93 Difference]: Finished difference Result 7217 states and 11694 transitions. [2024-11-27 19:49:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:49:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-27 19:49:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:37,951 INFO L225 Difference]: With dead ends: 7217 [2024-11-27 19:49:37,952 INFO L226 Difference]: Without dead ends: 5785 [2024-11-27 19:49:37,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:49:37,958 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 938 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:37,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1945 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 19:49:37,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2024-11-27 19:49:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 2749. [2024-11-27 19:49:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2263 states have (on average 1.5452938577110031) internal successors, (3497), 2277 states have internal predecessors, (3497), 467 states have call successors, (467), 18 states have call predecessors, (467), 18 states have return successors, (467), 453 states have call predecessors, (467), 467 states have call successors, (467) [2024-11-27 19:49:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4431 transitions. [2024-11-27 19:49:38,384 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4431 transitions. Word has length 453 [2024-11-27 19:49:38,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:38,385 INFO L471 AbstractCegarLoop]: Abstraction has 2749 states and 4431 transitions. [2024-11-27 19:49:38,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-27 19:49:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4431 transitions. [2024-11-27 19:49:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-27 19:49:38,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:38,396 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:38,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 19:49:38,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:38,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -313480778, now seen corresponding path program 1 times [2024-11-27 19:49:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342107045] [2024-11-27 19:49:38,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 33 proven. 177 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-27 19:49:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342107045] [2024-11-27 19:49:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342107045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395806665] [2024-11-27 19:49:39,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:39,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:39,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:39,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:39,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:49:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:40,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 19:49:40,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 3984 proven. 153 refuted. 0 times theorem prover too weak. 5803 trivial. 0 not checked. [2024-11-27 19:49:40,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-27 19:49:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395806665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:41,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:41,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-27 19:49:41,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352394924] [2024-11-27 19:49:41,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:41,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 19:49:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:41,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 19:49:41,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:49:41,593 INFO L87 Difference]: Start difference. First operand 2749 states and 4431 transitions. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) [2024-11-27 19:49:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:44,610 INFO L93 Difference]: Finished difference Result 11210 states and 17598 transitions. [2024-11-27 19:49:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-27 19:49:44,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) Word has length 453 [2024-11-27 19:49:44,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:44,662 INFO L225 Difference]: With dead ends: 11210 [2024-11-27 19:49:44,663 INFO L226 Difference]: Without dead ends: 8622 [2024-11-27 19:49:44,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 19:49:44,674 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 853 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:44,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1457 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 19:49:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2024-11-27 19:49:45,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 2772. [2024-11-27 19:49:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2175 states have (on average 1.4675862068965517) internal successors, (3192), 2197 states have internal predecessors, (3192), 547 states have call successors, (547), 49 states have call predecessors, (547), 49 states have return successors, (547), 525 states have call predecessors, (547), 547 states have call successors, (547) [2024-11-27 19:49:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4286 transitions. [2024-11-27 19:49:45,135 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4286 transitions. Word has length 453 [2024-11-27 19:49:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:45,137 INFO L471 AbstractCegarLoop]: Abstraction has 2772 states and 4286 transitions. [2024-11-27 19:49:45,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) [2024-11-27 19:49:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4286 transitions. [2024-11-27 19:49:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-27 19:49:45,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:45,144 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:45,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:49:45,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:45,344 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:45,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash -43666623, now seen corresponding path program 1 times [2024-11-27 19:49:45,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:45,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668216191] [2024-11-27 19:49:45,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:45,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 186 proven. 24 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-27 19:49:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668216191] [2024-11-27 19:49:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668216191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:47,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938099322] [2024-11-27 19:49:47,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:47,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:47,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:47,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:47,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:49:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:47,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:49:47,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 2399 proven. 48 refuted. 0 times theorem prover too weak. 7493 trivial. 0 not checked. [2024-11-27 19:49:50,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:55,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938099322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:55,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:49:55,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2024-11-27 19:49:55,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520299265] [2024-11-27 19:49:55,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:55,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 19:49:55,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:55,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 19:49:55,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:49:55,243 INFO L87 Difference]: Start difference. First operand 2772 states and 4286 transitions. Second operand has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) [2024-11-27 19:49:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:58,658 INFO L93 Difference]: Finished difference Result 7802 states and 12002 transitions. [2024-11-27 19:49:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 19:49:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) Word has length 454 [2024-11-27 19:49:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:58,700 INFO L225 Difference]: With dead ends: 7802 [2024-11-27 19:49:58,704 INFO L226 Difference]: Without dead ends: 5702 [2024-11-27 19:49:58,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2024-11-27 19:49:58,713 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 810 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:58,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 3045 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 19:49:58,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2024-11-27 19:49:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5158. [2024-11-27 19:49:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 3977 states have (on average 1.4417902941916017) internal successors, (5734), 4021 states have internal predecessors, (5734), 1075 states have call successors, (1075), 105 states have call predecessors, (1075), 105 states have return successors, (1075), 1031 states have call predecessors, (1075), 1075 states have call successors, (1075) [2024-11-27 19:49:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7884 transitions. [2024-11-27 19:49:59,465 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7884 transitions. Word has length 454 [2024-11-27 19:49:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:59,467 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 7884 transitions. [2024-11-27 19:49:59,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) [2024-11-27 19:49:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7884 transitions. [2024-11-27 19:49:59,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-27 19:49:59,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:59,475 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:59,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:49:59,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:59,679 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:59,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:59,680 INFO L85 PathProgramCache]: Analyzing trace with hash -70950850, now seen corresponding path program 1 times [2024-11-27 19:49:59,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:59,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085816545] [2024-11-27 19:49:59,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:59,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-27 19:50:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085816545] [2024-11-27 19:50:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085816545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455037088] [2024-11-27 19:50:00,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:00,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:00,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:00,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:00,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:50:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:00,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 19:50:00,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5040 proven. 105 refuted. 0 times theorem prover too weak. 4795 trivial. 0 not checked. [2024-11-27 19:50:01,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-27 19:50:02,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455037088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:02,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-27 19:50:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072154778] [2024-11-27 19:50:02,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:02,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:50:02,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:02,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:50:02,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:50:02,468 INFO L87 Difference]: Start difference. First operand 5158 states and 7884 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2024-11-27 19:50:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:03,623 INFO L93 Difference]: Finished difference Result 9863 states and 15001 transitions. [2024-11-27 19:50:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 19:50:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) Word has length 454 [2024-11-27 19:50:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:03,660 INFO L225 Difference]: With dead ends: 9863 [2024-11-27 19:50:03,661 INFO L226 Difference]: Without dead ends: 5210 [2024-11-27 19:50:03,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-27 19:50:03,675 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 525 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:03,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 644 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:50:03,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5210 states. [2024-11-27 19:50:04,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5210 to 5170. [2024-11-27 19:50:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 3980 states have (on average 1.4354271356783919) internal successors, (5713), 4024 states have internal predecessors, (5713), 1075 states have call successors, (1075), 114 states have call predecessors, (1075), 114 states have return successors, (1075), 1031 states have call predecessors, (1075), 1075 states have call successors, (1075) [2024-11-27 19:50:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7863 transitions. [2024-11-27 19:50:04,399 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7863 transitions. Word has length 454 [2024-11-27 19:50:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:04,402 INFO L471 AbstractCegarLoop]: Abstraction has 5170 states and 7863 transitions. [2024-11-27 19:50:04,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2024-11-27 19:50:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7863 transitions. [2024-11-27 19:50:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-27 19:50:04,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:04,413 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:04,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:50:04,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:04,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:04,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 989708094, now seen corresponding path program 1 times [2024-11-27 19:50:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:04,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853690366] [2024-11-27 19:50:04,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:04,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 558 proven. 54 refuted. 0 times theorem prover too weak. 9328 trivial. 0 not checked. [2024-11-27 19:50:07,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853690366] [2024-11-27 19:50:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853690366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978039594] [2024-11-27 19:50:07,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:07,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:07,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:07,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:07,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea3ddd5b-3e28-4cb7-8d2a-00fa84074c37/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:50:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:08,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 19:50:08,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 6544 proven. 288 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2024-11-27 19:50:14,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:56,500 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:51:51,741 WARN L286 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 39 DAG size of output: 36 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:51:59,822 WARN L286 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 41 DAG size of output: 36 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:52:14,954 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:53:08,483 WARN L286 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:53:24,708 WARN L286 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:53:31,272 WARN L286 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:53:50,699 WARN L286 SmtUtils]: Spent 19.38s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:54:01,098 WARN L286 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 25 DAG size of output: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:54:21,233 WARN L286 SmtUtils]: Spent 18.12s on a formula simplification. DAG size of input: 58 DAG size of output: 56 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:54:32,451 WARN L286 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 29 DAG size of output: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:54:43,662 WARN L286 SmtUtils]: Spent 11.21s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:54:59,438 WARN L286 SmtUtils]: Spent 8.94s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:55:08,779 WARN L286 SmtUtils]: Spent 9.34s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:55:24,265 WARN L286 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 25 DAG size of output: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:56:23,063 WARN L286 SmtUtils]: Spent 56.83s on a formula simplification. DAG size of input: 57 DAG size of output: 54 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:56:30,947 WARN L286 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:56:45,953 WARN L286 SmtUtils]: Spent 8.66s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 19:58:19,326 WARN L286 SmtUtils]: Spent 50.28s on a formula simplification. DAG size of input: 56 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:59:15,550 WARN L286 SmtUtils]: Spent 56.22s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 19:59:53,449 WARN L286 SmtUtils]: Spent 37.89s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:00:01,473 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:00:25,980 WARN L286 SmtUtils]: Spent 24.51s on a formula simplification. DAG size of input: 25 DAG size of output: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:00:32,296 WARN L286 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 20 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:00:42,482 WARN L286 SmtUtils]: Spent 9.92s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:01:06,280 WARN L286 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:01:12,046 WARN L286 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:01:28,972 WARN L286 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 18 DAG size of output: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:02:30,982 WARN L286 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:02:44,720 WARN L286 SmtUtils]: Spent 13.73s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:02:52,551 WARN L286 SmtUtils]: Spent 7.83s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:02:58,387 WARN L286 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:03:16,052 WARN L286 SmtUtils]: Spent 13.91s on a formula simplification. DAG size of input: 44 DAG size of output: 41 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-27 20:04:16,246 WARN L286 SmtUtils]: Spent 54.24s on a formula simplification. DAG size of input: 60 DAG size of output: 52 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)