./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/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 b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:24,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:24,377 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:26:24,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:24,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:24,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:24,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:24,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:24,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:24,437 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:24,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:24,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:24,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:24,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:24,441 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:24,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:24,441 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:26:24,441 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:24,442 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:24,442 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:24,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:24,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:24,444 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:24,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:24,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:24,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:24,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:24,446 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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/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 -> b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e [2024-11-28 03:26:24,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:24,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:24,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:24,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:24,772 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:24,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2024-11-28 03:26:27,855 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/data/f48275ed5/620fe52c468248ca937866bacdfc77c8/FLAGafa33b1fc [2024-11-28 03:26:28,232 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:28,235 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2024-11-28 03:26:28,247 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/data/f48275ed5/620fe52c468248ca937866bacdfc77c8/FLAGafa33b1fc [2024-11-28 03:26:28,264 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/data/f48275ed5/620fe52c468248ca937866bacdfc77c8 [2024-11-28 03:26:28,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:28,268 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:28,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:28,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:28,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:28,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7396d387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28, skipping insertion in model container [2024-11-28 03:26:28,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:28,506 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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2024-11-28 03:26:28,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:28,682 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:28,694 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_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2024-11-28 03:26:28,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:28,803 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:28,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28 WrapperNode [2024-11-28 03:26:28,804 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:28,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:28,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:28,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:28,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,915 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 428 [2024-11-28 03:26:28,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:28,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:28,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:28,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:28,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,965 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:26:28,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:28,998 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:29,053 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:29,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:29,056 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:29,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (1/1) ... [2024-11-28 03:26:29,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:29,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:29,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:29,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:26:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:26:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:29,307 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:29,309 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:30,417 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-28 03:26:30,418 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:30,443 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:30,447 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:26:30,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:30 BoogieIcfgContainer [2024-11-28 03:26:30,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:30,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:30,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:30,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:30,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:28" (1/3) ... [2024-11-28 03:26:30,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344e3743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:30, skipping insertion in model container [2024-11-28 03:26:30,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:28" (2/3) ... [2024-11-28 03:26:30,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344e3743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:30, skipping insertion in model container [2024-11-28 03:26:30,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:30" (3/3) ... [2024-11-28 03:26:30,462 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-46.i [2024-11-28 03:26:30,498 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:30,503 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-46.i that has 2 procedures, 175 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:26:30,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:30,614 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;@7fd69d06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:30,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:26:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 117 states have internal predecessors, (165), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-28 03:26:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 03:26:30,653 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:30,654 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:30,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:30,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1354044998, now seen corresponding path program 1 times [2024-11-28 03:26:30,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:30,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940923240] [2024-11-28 03:26:30,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:30,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-28 03:26:31,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940923240] [2024-11-28 03:26:31,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940923240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:31,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081497041] [2024-11-28 03:26:31,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:31,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:31,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:26:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:32,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:26:32,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2024-11-28 03:26:32,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081497041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:26:32,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697099636] [2024-11-28 03:26:32,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:32,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:26:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:32,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:26:32,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:26:32,195 INFO L87 Difference]: Start difference. First operand has 175 states, 116 states have (on average 1.4224137931034482) internal successors, (165), 117 states have internal predecessors, (165), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-28 03:26:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:32,257 INFO L93 Difference]: Finished difference Result 343 states and 604 transitions. [2024-11-28 03:26:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:26:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 365 [2024-11-28 03:26:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:32,269 INFO L225 Difference]: With dead ends: 343 [2024-11-28 03:26:32,270 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 03:26:32,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:26:32,279 INFO L435 NwaCegarLoop]: 270 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, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:32,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:26:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 03:26:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-28 03:26:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 113 states have internal predecessors, (158), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-28 03:26:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 270 transitions. [2024-11-28 03:26:32,387 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 270 transitions. Word has length 365 [2024-11-28 03:26:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:32,389 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 270 transitions. [2024-11-28 03:26:32,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-28 03:26:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 270 transitions. [2024-11-28 03:26:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 03:26:32,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:32,409 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:32,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:26:32,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:32,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:32,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1931229902, now seen corresponding path program 1 times [2024-11-28 03:26:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008660263] [2024-11-28 03:26:32,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-28 03:26:33,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008660263] [2024-11-28 03:26:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008660263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:33,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395595254] [2024-11-28 03:26:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:33,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:33,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:33,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:33,401 INFO L87 Difference]: Start difference. First operand 171 states and 270 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:33,483 INFO L93 Difference]: Finished difference Result 340 states and 539 transitions. [2024-11-28 03:26:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:33,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-28 03:26:33,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:33,492 INFO L225 Difference]: With dead ends: 340 [2024-11-28 03:26:33,494 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 03:26:33,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:33,498 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:33,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 531 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:26:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 03:26:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-28 03:26:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 114 states have (on average 1.394736842105263) internal successors, (159), 114 states have internal predecessors, (159), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-28 03:26:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 271 transitions. [2024-11-28 03:26:33,541 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 271 transitions. Word has length 365 [2024-11-28 03:26:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:33,546 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 271 transitions. [2024-11-28 03:26:33,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 271 transitions. [2024-11-28 03:26:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 03:26:33,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:33,558 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:33,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:33,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:33,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1854264304, now seen corresponding path program 1 times [2024-11-28 03:26:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:33,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118857813] [2024-11-28 03:26:33,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-28 03:26:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118857813] [2024-11-28 03:26:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118857813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:36,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:26:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949226155] [2024-11-28 03:26:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:36,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:36,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:36,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:36,927 INFO L87 Difference]: Start difference. First operand 172 states and 271 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:37,231 INFO L93 Difference]: Finished difference Result 479 states and 754 transitions. [2024-11-28 03:26:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:37,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-28 03:26:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:37,239 INFO L225 Difference]: With dead ends: 479 [2024-11-28 03:26:37,240 INFO L226 Difference]: Without dead ends: 310 [2024-11-28 03:26:37,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:37,242 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 194 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:37,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 891 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:26:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-28 03:26:37,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 192. [2024-11-28 03:26:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 134 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-28 03:26:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 303 transitions. [2024-11-28 03:26:37,281 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 303 transitions. Word has length 365 [2024-11-28 03:26:37,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:37,287 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 303 transitions. [2024-11-28 03:26:37,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 303 transitions. [2024-11-28 03:26:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 03:26:37,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:37,296 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:37,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:26:37,296 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:37,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -195123538, now seen corresponding path program 1 times [2024-11-28 03:26:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:37,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650094358] [2024-11-28 03:26:37,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2024-11-28 03:26:39,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:39,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650094358] [2024-11-28 03:26:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650094358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:39,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:39,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:39,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339553308] [2024-11-28 03:26:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:39,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:39,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:39,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:39,757 INFO L87 Difference]: Start difference. First operand 192 states and 303 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:40,864 INFO L93 Difference]: Finished difference Result 666 states and 1050 transitions. [2024-11-28 03:26:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:40,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 365 [2024-11-28 03:26:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:40,870 INFO L225 Difference]: With dead ends: 666 [2024-11-28 03:26:40,873 INFO L226 Difference]: Without dead ends: 477 [2024-11-28 03:26:40,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:26:40,878 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 397 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:40,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1094 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:26:40,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-28 03:26:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 355. [2024-11-28 03:26:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 239 states have (on average 1.4142259414225942) internal successors, (338), 239 states have internal predecessors, (338), 112 states have call successors, (112), 3 states have call predecessors, (112), 3 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-28 03:26:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 562 transitions. [2024-11-28 03:26:40,995 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 562 transitions. Word has length 365 [2024-11-28 03:26:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:40,997 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 562 transitions. [2024-11-28 03:26:40,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2024-11-28 03:26:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 562 transitions. [2024-11-28 03:26:41,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 03:26:41,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:41,006 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:41,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:26:41,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:41,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1783471440, now seen corresponding path program 1 times [2024-11-28 03:26:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534733505] [2024-11-28 03:26:41,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 57 proven. 108 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-28 03:26:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534733505] [2024-11-28 03:26:45,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534733505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229131467] [2024-11-28 03:26:45,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:45,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:45,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:45,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:26:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:45,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:26:45,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3482 proven. 228 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 03:26:47,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 96 proven. 231 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2024-11-28 03:26:48,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229131467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:48,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:48,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-28 03:26:48,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804865863] [2024-11-28 03:26:48,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:48,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:26:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:48,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:26:48,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:26:48,369 INFO L87 Difference]: Start difference. First operand 355 states and 562 transitions. Second operand has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) [2024-11-28 03:26:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:49,542 INFO L93 Difference]: Finished difference Result 625 states and 966 transitions. [2024-11-28 03:26:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:26:49,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) Word has length 365 [2024-11-28 03:26:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:49,550 INFO L225 Difference]: With dead ends: 625 [2024-11-28 03:26:49,550 INFO L226 Difference]: Without dead ends: 387 [2024-11-28 03:26:49,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:26:49,552 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 838 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:49,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 707 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:26:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-28 03:26:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 379. [2024-11-28 03:26:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 257 states have (on average 1.350194552529183) internal successors, (347), 257 states have internal predecessors, (347), 112 states have call successors, (112), 9 states have call predecessors, (112), 9 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-28 03:26:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2024-11-28 03:26:49,663 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 365 [2024-11-28 03:26:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:49,664 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2024-11-28 03:26:49,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.733333333333333) internal successors, (176), 15 states have internal predecessors, (176), 6 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (148), 6 states have call predecessors, (148), 6 states have call successors, (148) [2024-11-28 03:26:49,665 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2024-11-28 03:26:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-28 03:26:49,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:49,676 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:49,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:26:49,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:49,881 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:49,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash -875746726, now seen corresponding path program 1 times [2024-11-28 03:26:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:49,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810124051] [2024-11-28 03:26:49,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:49,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 108 proven. 57 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-28 03:26:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:53,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810124051] [2024-11-28 03:26:53,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810124051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:53,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130685019] [2024-11-28 03:26:53,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:53,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:53,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:53,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:53,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:26:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:53,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:26:53,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2583 proven. 117 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked. [2024-11-28 03:26:54,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 48 proven. 117 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-28 03:26:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130685019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:55,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:55,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-11-28 03:26:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356339071] [2024-11-28 03:26:55,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:55,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:26:55,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:55,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:26:55,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:26:55,075 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2024-11-28 03:26:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:57,371 INFO L93 Difference]: Finished difference Result 703 states and 1046 transitions. [2024-11-28 03:26:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:26:57,373 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) Word has length 366 [2024-11-28 03:26:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:57,377 INFO L225 Difference]: With dead ends: 703 [2024-11-28 03:26:57,377 INFO L226 Difference]: Without dead ends: 430 [2024-11-28 03:26:57,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:26:57,379 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 972 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:57,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1353 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:26:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-28 03:26:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 331. [2024-11-28 03:26:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 206 states have (on average 1.2572815533980584) internal successors, (259), 206 states have internal predecessors, (259), 112 states have call successors, (112), 12 states have call predecessors, (112), 12 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-28 03:26:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 483 transitions. [2024-11-28 03:26:57,454 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 483 transitions. Word has length 366 [2024-11-28 03:26:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:57,456 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 483 transitions. [2024-11-28 03:26:57,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 5 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 5 states have call predecessors, (152), 5 states have call successors, (152) [2024-11-28 03:26:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 483 transitions. [2024-11-28 03:26:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-28 03:26:57,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:57,465 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:57,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:26:57,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:57,666 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:26:57,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:57,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1489336280, now seen corresponding path program 1 times [2024-11-28 03:26:57,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:57,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695036264] [2024-11-28 03:26:57,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 99 proven. 66 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-28 03:27:00,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695036264] [2024-11-28 03:27:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695036264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:00,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100875659] [2024-11-28 03:27:00,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:00,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:00,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:27:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:01,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:27:01,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3025 proven. 66 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2024-11-28 03:27:01,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 99 proven. 66 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2024-11-28 03:27:02,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100875659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:02,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:02,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-28 03:27:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549549278] [2024-11-28 03:27:02,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:02,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:27:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:02,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:27:02,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:27:02,098 INFO L87 Difference]: Start difference. First operand 331 states and 483 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-28 03:27:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:02,651 INFO L93 Difference]: Finished difference Result 552 states and 802 transitions. [2024-11-28 03:27:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 366 [2024-11-28 03:27:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:02,657 INFO L225 Difference]: With dead ends: 552 [2024-11-28 03:27:02,657 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 03:27:02,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 729 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:02,659 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 239 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:02,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 495 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:27:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 03:27:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2024-11-28 03:27:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 212 states have internal predecessors, (264), 112 states have call successors, (112), 14 states have call predecessors, (112), 14 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-28 03:27:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 488 transitions. [2024-11-28 03:27:02,717 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 488 transitions. Word has length 366 [2024-11-28 03:27:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:02,718 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 488 transitions. [2024-11-28 03:27:02,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-11-28 03:27:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 488 transitions. [2024-11-28 03:27:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-28 03:27:02,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:02,725 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:02,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:02,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:02,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:02,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -99011622, now seen corresponding path program 1 times [2024-11-28 03:27:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595269930] [2024-11-28 03:27:02,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 372 proven. 393 refuted. 0 times theorem prover too weak. 5395 trivial. 0 not checked. [2024-11-28 03:27:17,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:27:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595269930] [2024-11-28 03:27:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595269930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:27:17,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521592945] [2024-11-28 03:27:17,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:17,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:17,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:17,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:17,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:27:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:18,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:27:18,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4678 proven. 397 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2024-11-28 03:27:21,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 405 proven. 237 refuted. 0 times theorem prover too weak. 5518 trivial. 0 not checked. [2024-11-28 03:27:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521592945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:29,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:27:29,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 51 [2024-11-28 03:27:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296109916] [2024-11-28 03:27:29,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:29,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 03:27:29,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:27:29,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 03:27:29,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=2068, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:27:29,268 INFO L87 Difference]: Start difference. First operand 339 states and 488 transitions. Second operand has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) [2024-11-28 03:27:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:50,065 INFO L93 Difference]: Finished difference Result 1382 states and 1929 transitions. [2024-11-28 03:27:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-28 03:27:50,066 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) Word has length 366 [2024-11-28 03:27:50,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:50,077 INFO L225 Difference]: With dead ends: 1382 [2024-11-28 03:27:50,077 INFO L226 Difference]: Without dead ends: 1173 [2024-11-28 03:27:50,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 730 SyntacticMatches, 1 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11851 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=5875, Invalid=28165, Unknown=0, NotChecked=0, Total=34040 [2024-11-28 03:27:50,086 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 6484 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 5919 mSolverCounterSat, 1708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6487 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 7627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1708 IncrementalHoareTripleChecker+Valid, 5919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:50,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6487 Valid, 3762 Invalid, 7627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1708 Valid, 5919 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-28 03:27:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2024-11-28 03:27:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 949. [2024-11-28 03:27:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 646 states have (on average 1.261609907120743) internal successors, (815), 648 states have internal predecessors, (815), 248 states have call successors, (248), 54 states have call predecessors, (248), 54 states have return successors, (248), 246 states have call predecessors, (248), 248 states have call successors, (248) [2024-11-28 03:27:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1311 transitions. [2024-11-28 03:27:50,287 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1311 transitions. Word has length 366 [2024-11-28 03:27:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:50,288 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1311 transitions. [2024-11-28 03:27:50,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 5.541666666666667) internal successors, (266), 47 states have internal predecessors, (266), 20 states have call successors, (157), 7 states have call predecessors, (157), 14 states have return successors, (158), 19 states have call predecessors, (158), 20 states have call successors, (158) [2024-11-28 03:27:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1311 transitions. [2024-11-28 03:27:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-28 03:27:50,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:50,293 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:50,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:27:50,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:50,494 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:27:50,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:50,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2108872837, now seen corresponding path program 1 times [2024-11-28 03:27:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:27:50,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729413452] [2024-11-28 03:27:50,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:27:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 930 proven. 555 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2024-11-28 03:28:32,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:28:32,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729413452] [2024-11-28 03:28:32,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729413452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:28:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936158317] [2024-11-28 03:28:32,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:32,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:32,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:32,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2c5c2d-d50d-46a6-a7cd-4948a304fd01/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:28:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:39,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 153 conjuncts are in the unsatisfiable core [2024-11-28 03:28:39,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 5008 proven. 618 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2024-11-28 03:29:08,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:35,980 WARN L286 SmtUtils]: Spent 8.03s 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) [2024-11-28 03:31:48,753 WARN L286 SmtUtils]: Spent 12.45s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:32:44,385 WARN L286 SmtUtils]: Spent 14.39s on a formula simplification. DAG size of input: 197 DAG size of output: 174 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:33:16,052 WARN L286 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:34:45,978 WARN L286 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 184 DAG size of output: 170 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:35:21,406 WARN L286 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:35:57,454 WARN L286 SmtUtils]: Spent 18.41s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 03:40:03,455 WARN L286 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 37 DAG size of output: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)