./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.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_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/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_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/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_6e6c13cc-f143-48d7-96ad-073e1ec64534/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 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:04:45,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:04:45,459 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:04:45,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:04:45,467 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:04:45,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:04:45,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:04:45,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:04:45,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:04:45,499 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:04:45,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:04:45,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:04:45,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:04:45,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:04:45,500 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:04:45,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:04:45,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:04:45,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:04:45,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:04:45,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:04:45,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:04:45,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:04:45,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:04:45,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:04:45,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:04:45,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:04:45,503 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:04:45,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:04:45,503 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:04:45,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:04:45,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:04:45,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:04:45,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:04:45,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:04:45,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:04:45,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:04:45,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:04:45,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:04:45,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:04:45,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:04:45,505 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:04:45,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:04:45,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:04:45,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:04:45,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:04:45,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:04:45,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:04:45,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:04:45,506 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/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 -> 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 [2024-11-27 20:04:45,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:04:45,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:04:45,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:04:45,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:04:45,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:04:45,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:04:49,853 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/d7e47e506/a5f50fc9355f4400a167b162fc327b9b/FLAG2b1ebdf95 [2024-11-27 20:04:50,342 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:04:50,343 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:04:50,364 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/d7e47e506/a5f50fc9355f4400a167b162fc327b9b/FLAG2b1ebdf95 [2024-11-27 20:04:50,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/d7e47e506/a5f50fc9355f4400a167b162fc327b9b [2024-11-27 20:04:50,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:04:50,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:04:50,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:04:50,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:04:50,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:04:50,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:04:50" (1/1) ... [2024-11-27 20:04:50,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b4a6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:50, skipping insertion in model container [2024-11-27 20:04:50,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:04:50" (1/1) ... [2024-11-27 20:04:50,463 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:04:50,703 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-27 20:04:50,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:04:51,018 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:04:51,039 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-27 20:04:51,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:04:51,229 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:04:51,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51 WrapperNode [2024-11-27 20:04:51,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:04:51,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:04:51,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:04:51,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:04:51,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,386 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 558 [2024-11-27 20:04:51,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:04:51,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:04:51,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:04:51,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:04:51,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,466 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:04:51,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,542 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:04:51,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:04:51,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:04:51,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:04:51,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (1/1) ... [2024-11-27 20:04:51,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:04:51,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:04:51,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:04:51,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:04:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:04:51,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:04:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:04:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:04:51,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:04:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:04:51,909 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:04:51,912 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:04:53,558 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-27 20:04:53,559 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:04:53,587 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:04:53,588 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:04:53,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:04:53 BoogieIcfgContainer [2024-11-27 20:04:53,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:04:53,594 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:04:53,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:04:53,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:04:53,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:04:50" (1/3) ... [2024-11-27 20:04:53,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113c6308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:04:53, skipping insertion in model container [2024-11-27 20:04:53,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:04:51" (2/3) ... [2024-11-27 20:04:53,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113c6308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:04:53, skipping insertion in model container [2024-11-27 20:04:53,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:04:53" (3/3) ... [2024-11-27 20:04:53,606 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:04:53,666 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:04:53,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i that has 2 procedures, 235 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:04:53,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:04:53,800 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;@3be3a027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:04:53,801 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:04:53,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 156 states have internal predecessors, (236), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-27 20:04:53,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:04:53,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:04:53,855 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:04:53,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:04:53,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:04:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1477481199, now seen corresponding path program 1 times [2024-11-27 20:04:53,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:04:53,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621912393] [2024-11-27 20:04:53,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:53,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:04:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-27 20:04:54,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:04:54,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621912393] [2024-11-27 20:04:54,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621912393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:04:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461789609] [2024-11-27 20:04:54,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:54,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:04:54,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:04:54,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:04:54,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:04:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:55,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:04:55,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:04:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2024-11-27 20:04:55,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:04:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461789609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:04:55,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:04:55,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:04:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121403040] [2024-11-27 20:04:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:04:55,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:04:55,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:04:55,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:04:55,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:04:55,695 INFO L87 Difference]: Start difference. First operand has 235 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 156 states have internal predecessors, (236), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-27 20:04:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:04:55,802 INFO L93 Difference]: Finished difference Result 463 states and 851 transitions. [2024-11-27 20:04:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:04:55,805 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 483 [2024-11-27 20:04:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:04:55,817 INFO L225 Difference]: With dead ends: 463 [2024-11-27 20:04:55,817 INFO L226 Difference]: Without dead ends: 231 [2024-11-27 20:04:55,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:04:55,828 INFO L435 NwaCegarLoop]: 382 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, 382 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:04:55,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:04:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-27 20:04:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-27 20:04:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 152 states have (on average 1.5) internal successors, (228), 152 states have internal predecessors, (228), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-27 20:04:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 382 transitions. [2024-11-27 20:04:55,969 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 382 transitions. Word has length 483 [2024-11-27 20:04:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:04:55,974 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 382 transitions. [2024-11-27 20:04:55,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-27 20:04:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 382 transitions. [2024-11-27 20:04:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:04:56,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:04:56,003 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:04:56,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:04:56,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:04:56,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:04:56,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:04:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -935932201, now seen corresponding path program 1 times [2024-11-27 20:04:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:04:56,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756866756] [2024-11-27 20:04:56,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:04:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:04:57,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:04:57,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756866756] [2024-11-27 20:04:57,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756866756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:04:57,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:04:57,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:04:57,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441042233] [2024-11-27 20:04:57,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:04:57,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:04:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:04:57,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:04:57,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:04:57,150 INFO L87 Difference]: Start difference. First operand 231 states and 382 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:04:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:04:57,326 INFO L93 Difference]: Finished difference Result 592 states and 983 transitions. [2024-11-27 20:04:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:04:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:04:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:04:57,340 INFO L225 Difference]: With dead ends: 592 [2024-11-27 20:04:57,340 INFO L226 Difference]: Without dead ends: 364 [2024-11-27 20:04:57,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:04:57,344 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 227 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:04:57,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 797 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:04:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-27 20:04:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2024-11-27 20:04:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 259 states have (on average 1.5444015444015444) internal successors, (400), 260 states have internal predecessors, (400), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 20:04:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 598 transitions. [2024-11-27 20:04:57,469 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 598 transitions. Word has length 483 [2024-11-27 20:04:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:04:57,475 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 598 transitions. [2024-11-27 20:04:57,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:04:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 598 transitions. [2024-11-27 20:04:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:04:57,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:04:57,493 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:04:57,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:04:57,494 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:04:57,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:04:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1289020583, now seen corresponding path program 1 times [2024-11-27 20:04:57,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:04:57,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774177195] [2024-11-27 20:04:57,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:04:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:04:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:04:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774177195] [2024-11-27 20:04:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774177195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:04:58,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:04:58,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:04:58,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009517623] [2024-11-27 20:04:58,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:04:58,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:04:58,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:04:58,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:04:58,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:04:58,272 INFO L87 Difference]: Start difference. First operand 361 states and 598 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:04:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:04:58,431 INFO L93 Difference]: Finished difference Result 966 states and 1594 transitions. [2024-11-27 20:04:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:04:58,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:04:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:04:58,446 INFO L225 Difference]: With dead ends: 966 [2024-11-27 20:04:58,447 INFO L226 Difference]: Without dead ends: 608 [2024-11-27 20:04:58,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:04:58,451 INFO L435 NwaCegarLoop]: 526 mSDtfsCounter, 224 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:04:58,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 895 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:04:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-27 20:04:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 605. [2024-11-27 20:04:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 424 states have (on average 1.5117924528301887) internal successors, (641), 427 states have internal predecessors, (641), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-27 20:04:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 993 transitions. [2024-11-27 20:04:58,584 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 993 transitions. Word has length 483 [2024-11-27 20:04:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:04:58,586 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 993 transitions. [2024-11-27 20:04:58,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:04:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 993 transitions. [2024-11-27 20:04:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:04:58,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:04:58,606 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:04:58,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:04:58,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:04:58,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:04:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1984878359, now seen corresponding path program 1 times [2024-11-27 20:04:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:04:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508287120] [2024-11-27 20:04:58,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:04:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:04:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:04:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:04:59,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:04:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508287120] [2024-11-27 20:04:59,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508287120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:04:59,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:04:59,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:04:59,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626908007] [2024-11-27 20:04:59,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:04:59,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:04:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:04:59,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:04:59,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:04:59,555 INFO L87 Difference]: Start difference. First operand 605 states and 993 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:00,254 INFO L93 Difference]: Finished difference Result 1207 states and 1983 transitions. [2024-11-27 20:05:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:05:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:05:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:00,266 INFO L225 Difference]: With dead ends: 1207 [2024-11-27 20:05:00,266 INFO L226 Difference]: Without dead ends: 605 [2024-11-27 20:05:00,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:00,271 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 375 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:00,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 595 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:05:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-27 20:05:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-27 20:05:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 424 states have (on average 1.5023584905660377) internal successors, (637), 427 states have internal predecessors, (637), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-27 20:05:00,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 989 transitions. [2024-11-27 20:05:00,418 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 989 transitions. Word has length 483 [2024-11-27 20:05:00,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:00,419 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 989 transitions. [2024-11-27 20:05:00,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:00,420 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 989 transitions. [2024-11-27 20:05:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:05:00,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:00,438 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:00,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:05:00,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -535081575, now seen corresponding path program 1 times [2024-11-27 20:05:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158257302] [2024-11-27 20:05:00,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:01,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158257302] [2024-11-27 20:05:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158257302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760745203] [2024-11-27 20:05:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:01,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:01,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:01,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:01,580 INFO L87 Difference]: Start difference. First operand 605 states and 989 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:01,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:01,690 INFO L93 Difference]: Finished difference Result 1211 states and 1983 transitions. [2024-11-27 20:05:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:01,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:05:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:01,700 INFO L225 Difference]: With dead ends: 1211 [2024-11-27 20:05:01,701 INFO L226 Difference]: Without dead ends: 609 [2024-11-27 20:05:01,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:01,706 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:01,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-27 20:05:01,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2024-11-27 20:05:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 428 states have (on average 1.4976635514018692) internal successors, (641), 431 states have internal predecessors, (641), 176 states have call successors, (176), 4 states have call predecessors, (176), 4 states have return successors, (176), 173 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-27 20:05:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 993 transitions. [2024-11-27 20:05:01,847 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 993 transitions. Word has length 483 [2024-11-27 20:05:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:01,849 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 993 transitions. [2024-11-27 20:05:01,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 993 transitions. [2024-11-27 20:05:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:05:01,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:01,861 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:01,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:05:01,862 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:01,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -473041961, now seen corresponding path program 1 times [2024-11-27 20:05:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:01,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017969543] [2024-11-27 20:05:01,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:01,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017969543] [2024-11-27 20:05:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017969543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:04,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:05:04,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746170197] [2024-11-27 20:05:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:04,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:04,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:04,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:04,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:04,765 INFO L87 Difference]: Start difference. First operand 609 states and 993 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:06,408 INFO L93 Difference]: Finished difference Result 2583 states and 4204 transitions. [2024-11-27 20:05:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:05:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:06,426 INFO L225 Difference]: With dead ends: 2583 [2024-11-27 20:05:06,426 INFO L226 Difference]: Without dead ends: 1977 [2024-11-27 20:05:06,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:05:06,431 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 744 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:06,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1318 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:05:06,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2024-11-27 20:05:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1213. [2024-11-27 20:05:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 912 states have (on average 1.5230263157894737) internal successors, (1389), 919 states have internal predecessors, (1389), 292 states have call successors, (292), 8 states have call predecessors, (292), 8 states have return successors, (292), 285 states have call predecessors, (292), 292 states have call successors, (292) [2024-11-27 20:05:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1973 transitions. [2024-11-27 20:05:06,655 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1973 transitions. Word has length 483 [2024-11-27 20:05:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:06,657 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1973 transitions. [2024-11-27 20:05:06,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:06,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1973 transitions. [2024-11-27 20:05:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:05:06,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:06,673 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:06,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:05:06,674 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:06,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -332493351, now seen corresponding path program 1 times [2024-11-27 20:05:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87999203] [2024-11-27 20:05:06,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:07,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87999203] [2024-11-27 20:05:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87999203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:05:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261915355] [2024-11-27 20:05:07,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:07,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:05:07,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:07,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:05:07,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:05:07,678 INFO L87 Difference]: Start difference. First operand 1213 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:09,023 INFO L93 Difference]: Finished difference Result 3890 states and 6241 transitions. [2024-11-27 20:05:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:05:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 483 [2024-11-27 20:05:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:09,051 INFO L225 Difference]: With dead ends: 3890 [2024-11-27 20:05:09,051 INFO L226 Difference]: Without dead ends: 2680 [2024-11-27 20:05:09,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:05:09,058 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 734 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:09,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 847 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:05:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2024-11-27 20:05:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1716. [2024-11-27 20:05:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1407 states have (on average 1.5728500355366026) internal successors, (2213), 1414 states have internal predecessors, (2213), 292 states have call successors, (292), 16 states have call predecessors, (292), 16 states have return successors, (292), 285 states have call predecessors, (292), 292 states have call successors, (292) [2024-11-27 20:05:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2797 transitions. [2024-11-27 20:05:09,471 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2797 transitions. Word has length 483 [2024-11-27 20:05:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:09,473 INFO L471 AbstractCegarLoop]: Abstraction has 1716 states and 2797 transitions. [2024-11-27 20:05:09,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2797 transitions. [2024-11-27 20:05:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-27 20:05:09,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:09,486 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:09,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:05:09,487 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:09,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:09,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1968329239, now seen corresponding path program 1 times [2024-11-27 20:05:09,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:09,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606068246] [2024-11-27 20:05:09,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:09,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:05:10,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:10,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606068246] [2024-11-27 20:05:10,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606068246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:10,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855874402] [2024-11-27 20:05:10,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:10,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:10,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:10,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:05:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:11,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:05:11,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4806 proven. 63 refuted. 0 times theorem prover too weak. 6835 trivial. 0 not checked. [2024-11-27 20:05:11,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:05:12,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855874402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:12,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-27 20:05:12,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23285383] [2024-11-27 20:05:12,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:12,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:05:12,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:12,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:05:12,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:05:12,630 INFO L87 Difference]: Start difference. First operand 1716 states and 2797 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-27 20:05:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:13,471 INFO L93 Difference]: Finished difference Result 2757 states and 4507 transitions. [2024-11-27 20:05:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:05:13,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 483 [2024-11-27 20:05:13,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:13,485 INFO L225 Difference]: With dead ends: 2757 [2024-11-27 20:05:13,486 INFO L226 Difference]: Without dead ends: 1044 [2024-11-27 20:05:13,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:05:13,491 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 249 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:13,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 727 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:05:13,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-27 20:05:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1028. [2024-11-27 20:05:13,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 861 states have (on average 1.5691056910569106) internal successors, (1351), 864 states have internal predecessors, (1351), 157 states have call successors, (157), 9 states have call predecessors, (157), 9 states have return successors, (157), 154 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-27 20:05:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1665 transitions. [2024-11-27 20:05:13,630 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1665 transitions. Word has length 483 [2024-11-27 20:05:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:13,631 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1665 transitions. [2024-11-27 20:05:13,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-27 20:05:13,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1665 transitions. [2024-11-27 20:05:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-27 20:05:13,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:13,641 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:13,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:05:13,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:13,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:13,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1163595763, now seen corresponding path program 1 times [2024-11-27 20:05:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127667802] [2024-11-27 20:05:13,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:05:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954829940] [2024-11-27 20:05:14,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:14,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:14,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:14,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:05:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:15,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 20:05:15,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4738 proven. 165 refuted. 0 times theorem prover too weak. 6801 trivial. 0 not checked. [2024-11-27 20:05:19,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:20,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:20,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127667802] [2024-11-27 20:05:20,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:05:20,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954829940] [2024-11-27 20:05:20,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954829940] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:20,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2024-11-27 20:05:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012363734] [2024-11-27 20:05:20,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:20,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:05:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:20,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:05:20,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:05:20,572 INFO L87 Difference]: Start difference. First operand 1028 states and 1665 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:22,103 INFO L93 Difference]: Finished difference Result 3227 states and 5172 transitions. [2024-11-27 20:05:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:05:22,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-27 20:05:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:22,124 INFO L225 Difference]: With dead ends: 3227 [2024-11-27 20:05:22,124 INFO L226 Difference]: Without dead ends: 2202 [2024-11-27 20:05:22,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:05:22,129 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 867 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:22,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 1272 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:05:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2024-11-27 20:05:22,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1548. [2024-11-27 20:05:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1275 states have (on average 1.5490196078431373) internal successors, (1975), 1282 states have internal predecessors, (1975), 255 states have call successors, (255), 17 states have call predecessors, (255), 17 states have return successors, (255), 248 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-27 20:05:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2485 transitions. [2024-11-27 20:05:22,360 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2485 transitions. Word has length 484 [2024-11-27 20:05:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:22,362 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2485 transitions. [2024-11-27 20:05:22,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2485 transitions. [2024-11-27 20:05:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-27 20:05:22,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:22,370 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:22,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:22,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:22,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:22,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:22,572 INFO L85 PathProgramCache]: Analyzing trace with hash -810507381, now seen corresponding path program 1 times [2024-11-27 20:05:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:22,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567784331] [2024-11-27 20:05:22,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:05:23,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785401775] [2024-11-27 20:05:23,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:23,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:23,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:05:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:23,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:05:23,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4738 proven. 165 refuted. 0 times theorem prover too weak. 6801 trivial. 0 not checked. [2024-11-27 20:05:26,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567784331] [2024-11-27 20:05:26,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:05:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785401775] [2024-11-27 20:05:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785401775] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:27,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:05:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-27 20:05:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753651949] [2024-11-27 20:05:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:27,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:05:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:27,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:05:27,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:05:27,003 INFO L87 Difference]: Start difference. First operand 1548 states and 2485 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:27,874 INFO L93 Difference]: Finished difference Result 4223 states and 6755 transitions. [2024-11-27 20:05:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:05:27,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-27 20:05:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:27,894 INFO L225 Difference]: With dead ends: 4223 [2024-11-27 20:05:27,894 INFO L226 Difference]: Without dead ends: 2678 [2024-11-27 20:05:27,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:05:27,904 INFO L435 NwaCegarLoop]: 632 mSDtfsCounter, 464 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:27,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1752 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:05:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2024-11-27 20:05:28,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1548. [2024-11-27 20:05:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1275 states have (on average 1.5490196078431373) internal successors, (1975), 1282 states have internal predecessors, (1975), 255 states have call successors, (255), 17 states have call predecessors, (255), 17 states have return successors, (255), 248 states have call predecessors, (255), 255 states have call successors, (255) [2024-11-27 20:05:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2485 transitions. [2024-11-27 20:05:28,148 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2485 transitions. Word has length 484 [2024-11-27 20:05:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:28,150 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 2485 transitions. [2024-11-27 20:05:28,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:28,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2485 transitions. [2024-11-27 20:05:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2024-11-27 20:05:28,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:28,157 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:28,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:28,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:05:28,362 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:28,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1179114481, now seen corresponding path program 1 times [2024-11-27 20:05:28,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:28,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308583059] [2024-11-27 20:05:28,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:29,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:29,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308583059] [2024-11-27 20:05:29,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308583059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:29,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:29,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:05:29,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326752297] [2024-11-27 20:05:29,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:29,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:05:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:29,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:05:29,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:05:29,062 INFO L87 Difference]: Start difference. First operand 1548 states and 2485 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:29,421 INFO L93 Difference]: Finished difference Result 4092 states and 6573 transitions. [2024-11-27 20:05:29,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 484 [2024-11-27 20:05:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:29,440 INFO L225 Difference]: With dead ends: 4092 [2024-11-27 20:05:29,440 INFO L226 Difference]: Without dead ends: 2547 [2024-11-27 20:05:29,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:05:29,447 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 248 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:29,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1261 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2024-11-27 20:05:29,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2024-11-27 20:05:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2104 states have (on average 1.5503802281368821) internal successors, (3262), 2114 states have internal predecessors, (3262), 412 states have call successors, (412), 28 states have call predecessors, (412), 28 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2024-11-27 20:05:29,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4086 transitions. [2024-11-27 20:05:29,911 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4086 transitions. Word has length 484 [2024-11-27 20:05:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:29,912 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4086 transitions. [2024-11-27 20:05:29,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4086 transitions. [2024-11-27 20:05:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-27 20:05:29,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:29,925 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:29,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:05:29,925 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:29,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1852163767, now seen corresponding path program 1 times [2024-11-27 20:05:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:29,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105847320] [2024-11-27 20:05:29,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:29,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:30,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105847320] [2024-11-27 20:05:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105847320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:30,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:30,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123361988] [2024-11-27 20:05:30,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:30,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:30,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:30,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:30,425 INFO L87 Difference]: Start difference. First operand 2545 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:30,723 INFO L93 Difference]: Finished difference Result 5095 states and 8185 transitions. [2024-11-27 20:05:30,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-27 20:05:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:30,744 INFO L225 Difference]: With dead ends: 5095 [2024-11-27 20:05:30,745 INFO L226 Difference]: Without dead ends: 2553 [2024-11-27 20:05:30,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:30,753 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 0 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:30,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 747 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:05:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2024-11-27 20:05:31,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2553. [2024-11-27 20:05:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2112 states have (on average 1.5482954545454546) internal successors, (3270), 2122 states have internal predecessors, (3270), 412 states have call successors, (412), 28 states have call predecessors, (412), 28 states have return successors, (412), 402 states have call predecessors, (412), 412 states have call successors, (412) [2024-11-27 20:05:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4094 transitions. [2024-11-27 20:05:31,162 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4094 transitions. Word has length 486 [2024-11-27 20:05:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:31,164 INFO L471 AbstractCegarLoop]: Abstraction has 2553 states and 4094 transitions. [2024-11-27 20:05:31,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4094 transitions. [2024-11-27 20:05:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-27 20:05:31,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:31,172 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:31,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:05:31,173 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:31,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2100310261, now seen corresponding path program 1 times [2024-11-27 20:05:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923745140] [2024-11-27 20:05:31,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:05:31,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:31,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923745140] [2024-11-27 20:05:31,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923745140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:05:31,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:05:31,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:05:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001684029] [2024-11-27 20:05:31,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:05:31,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:05:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:31,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:05:31,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:31,633 INFO L87 Difference]: Start difference. First operand 2553 states and 4094 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:32,307 INFO L93 Difference]: Finished difference Result 7645 states and 12268 transitions. [2024-11-27 20:05:32,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:05:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 486 [2024-11-27 20:05:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:32,353 INFO L225 Difference]: With dead ends: 7645 [2024-11-27 20:05:32,353 INFO L226 Difference]: Without dead ends: 5095 [2024-11-27 20:05:32,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:05:32,362 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 240 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:32,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 833 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:05:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2024-11-27 20:05:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5093. [2024-11-27 20:05:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 4212 states have (on average 1.5479582146248814) internal successors, (6520), 4232 states have internal predecessors, (6520), 824 states have call successors, (824), 56 states have call predecessors, (824), 56 states have return successors, (824), 804 states have call predecessors, (824), 824 states have call successors, (824) [2024-11-27 20:05:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 8168 transitions. [2024-11-27 20:05:33,143 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 8168 transitions. Word has length 486 [2024-11-27 20:05:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:33,145 INFO L471 AbstractCegarLoop]: Abstraction has 5093 states and 8168 transitions. [2024-11-27 20:05:33,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:05:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 8168 transitions. [2024-11-27 20:05:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-27 20:05:33,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:33,159 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:33,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:05:33,160 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:33,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2115828979, now seen corresponding path program 1 times [2024-11-27 20:05:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606185846] [2024-11-27 20:05:33,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:05:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606185846] [2024-11-27 20:05:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606185846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309880965] [2024-11-27 20:05:33,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:33,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:33,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:33,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:05:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:34,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:05:34,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1098 proven. 9 refuted. 0 times theorem prover too weak. 10597 trivial. 0 not checked. [2024-11-27 20:05:34,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 219 proven. 9 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:05:35,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309880965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:35,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:35,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-27 20:05:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480757386] [2024-11-27 20:05:35,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:35,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:05:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:35,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:05:35,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:05:35,486 INFO L87 Difference]: Start difference. First operand 5093 states and 8168 transitions. Second operand has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2024-11-27 20:05:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:05:37,297 INFO L93 Difference]: Finished difference Result 10299 states and 16445 transitions. [2024-11-27 20:05:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:05:37,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) Word has length 486 [2024-11-27 20:05:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:05:37,350 INFO L225 Difference]: With dead ends: 10299 [2024-11-27 20:05:37,354 INFO L226 Difference]: Without dead ends: 5209 [2024-11-27 20:05:37,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 969 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:05:37,374 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 617 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:05:37,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 728 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:05:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5209 states. [2024-11-27 20:05:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5209 to 4017. [2024-11-27 20:05:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3132 states have (on average 1.5019157088122606) internal successors, (4704), 3152 states have internal predecessors, (4704), 824 states have call successors, (824), 60 states have call predecessors, (824), 60 states have return successors, (824), 804 states have call predecessors, (824), 824 states have call successors, (824) [2024-11-27 20:05:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6352 transitions. [2024-11-27 20:05:38,195 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6352 transitions. Word has length 486 [2024-11-27 20:05:38,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:05:38,196 INFO L471 AbstractCegarLoop]: Abstraction has 4017 states and 6352 transitions. [2024-11-27 20:05:38,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.77777777777778) internal successors, (187), 9 states have internal predecessors, (187), 4 states have call successors, (83), 2 states have call predecessors, (83), 4 states have return successors, (85), 4 states have call predecessors, (85), 4 states have call successors, (85) [2024-11-27 20:05:38,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6352 transitions. [2024-11-27 20:05:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-27 20:05:38,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:05:38,205 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:05:38,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:05:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:05:38,407 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:05:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:05:38,408 INFO L85 PathProgramCache]: Analyzing trace with hash 121684273, now seen corresponding path program 1 times [2024-11-27 20:05:38,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:05:38,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378730784] [2024-11-27 20:05:38,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:38,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:05:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 489 proven. 591 refuted. 0 times theorem prover too weak. 10624 trivial. 0 not checked. [2024-11-27 20:05:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:05:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378730784] [2024-11-27 20:05:41,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378730784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:05:41,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367933978] [2024-11-27 20:05:41,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:05:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:05:41,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:05:41,276 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:05:41,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:05:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:05:41,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 20:05:41,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:05:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6534 proven. 474 refuted. 0 times theorem prover too weak. 4696 trivial. 0 not checked. [2024-11-27 20:05:45,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:05:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 492 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2024-11-27 20:05:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367933978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:05:48,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:05:48,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 37 [2024-11-27 20:05:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697970804] [2024-11-27 20:05:48,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:05:48,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 20:05:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:05:48,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 20:05:48,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:05:48,772 INFO L87 Difference]: Start difference. First operand 4017 states and 6352 transitions. Second operand has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2024-11-27 20:06:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:07,368 INFO L93 Difference]: Finished difference Result 14843 states and 22970 transitions. [2024-11-27 20:06:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2024-11-27 20:06:07,369 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) Word has length 486 [2024-11-27 20:06:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:07,421 INFO L225 Difference]: With dead ends: 14843 [2024-11-27 20:06:07,422 INFO L226 Difference]: Without dead ends: 10829 [2024-11-27 20:06:07,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1155 GetRequests, 980 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12105 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=5731, Invalid=25421, Unknown=0, NotChecked=0, Total=31152 [2024-11-27 20:06:07,443 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 8478 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 3133 mSolverCounterSat, 3855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8478 SdHoareTripleChecker+Valid, 2510 SdHoareTripleChecker+Invalid, 6988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3855 IncrementalHoareTripleChecker+Valid, 3133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:07,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8478 Valid, 2510 Invalid, 6988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3855 Valid, 3133 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-27 20:06:07,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2024-11-27 20:06:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 6009. [2024-11-27 20:06:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 4844 states have (on average 1.5105284888521884) internal successors, (7317), 4868 states have internal predecessors, (7317), 1055 states have call successors, (1055), 109 states have call predecessors, (1055), 109 states have return successors, (1055), 1031 states have call predecessors, (1055), 1055 states have call successors, (1055) [2024-11-27 20:06:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 9427 transitions. [2024-11-27 20:06:09,018 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 9427 transitions. Word has length 486 [2024-11-27 20:06:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:09,019 INFO L471 AbstractCegarLoop]: Abstraction has 6009 states and 9427 transitions. [2024-11-27 20:06:09,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 34 states have internal predecessors, (209), 14 states have call successors, (165), 5 states have call predecessors, (165), 12 states have return successors, (166), 14 states have call predecessors, (166), 14 states have call successors, (166) [2024-11-27 20:06:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 9427 transitions. [2024-11-27 20:06:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-27 20:06:09,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:09,029 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:09,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:06:09,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:06:09,233 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:09,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash 479850412, now seen corresponding path program 1 times [2024-11-27 20:06:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583372858] [2024-11-27 20:06:09,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:06:11,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:11,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583372858] [2024-11-27 20:06:11,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583372858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:11,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:11,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:06:11,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659530666] [2024-11-27 20:06:11,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:11,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:06:11,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:11,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:06:11,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:06:11,575 INFO L87 Difference]: Start difference. First operand 6009 states and 9427 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:06:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:17,682 INFO L93 Difference]: Finished difference Result 25951 states and 39861 transitions. [2024-11-27 20:06:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:06:17,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 487 [2024-11-27 20:06:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:17,785 INFO L225 Difference]: With dead ends: 25951 [2024-11-27 20:06:17,785 INFO L226 Difference]: Without dead ends: 19945 [2024-11-27 20:06:17,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:17,804 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 766 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:17,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 2025 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:06:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19945 states. [2024-11-27 20:06:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19945 to 9183. [2024-11-27 20:06:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9183 states, 7188 states have (on average 1.4881747356705621) internal successors, (10697), 7242 states have internal predecessors, (10697), 1820 states have call successors, (1820), 174 states have call predecessors, (1820), 174 states have return successors, (1820), 1766 states have call predecessors, (1820), 1820 states have call successors, (1820) [2024-11-27 20:06:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9183 states to 9183 states and 14337 transitions. [2024-11-27 20:06:20,558 INFO L78 Accepts]: Start accepts. Automaton has 9183 states and 14337 transitions. Word has length 487 [2024-11-27 20:06:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:20,560 INFO L471 AbstractCegarLoop]: Abstraction has 9183 states and 14337 transitions. [2024-11-27 20:06:20,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:06:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 9183 states and 14337 transitions. [2024-11-27 20:06:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-27 20:06:20,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:20,571 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:20,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:06:20,572 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:20,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash 541890026, now seen corresponding path program 1 times [2024-11-27 20:06:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:20,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687875745] [2024-11-27 20:06:20,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 474 refuted. 0 times theorem prover too weak. 10828 trivial. 0 not checked. [2024-11-27 20:06:23,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687875745] [2024-11-27 20:06:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687875745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160069707] [2024-11-27 20:06:23,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:23,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:23,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:06:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:24,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 20:06:24,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6418 proven. 591 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2024-11-27 20:06:29,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 402 proven. 492 refuted. 0 times theorem prover too weak. 10810 trivial. 0 not checked. [2024-11-27 20:06:33,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160069707] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:33,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:33,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 17] total 40 [2024-11-27 20:06:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715650957] [2024-11-27 20:06:33,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:33,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 20:06:33,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:33,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 20:06:33,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 20:06:33,227 INFO L87 Difference]: Start difference. First operand 9183 states and 14337 transitions. Second operand has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) [2024-11-27 20:06:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:56,561 INFO L93 Difference]: Finished difference Result 37807 states and 57593 transitions. [2024-11-27 20:06:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-27 20:06:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) Word has length 487 [2024-11-27 20:06:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:56,724 INFO L225 Difference]: With dead ends: 37807 [2024-11-27 20:06:56,724 INFO L226 Difference]: Without dead ends: 28627 [2024-11-27 20:06:56,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1158 GetRequests, 976 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12662 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=6319, Invalid=27353, Unknown=0, NotChecked=0, Total=33672 [2024-11-27 20:06:56,764 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 3547 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3579 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 5669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1766 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:56,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3579 Valid, 4292 Invalid, 5669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1766 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-27 20:06:56,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28627 states. [2024-11-27 20:06:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28627 to 8183. [2024-11-27 20:06:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 6521 states have (on average 1.5002300260696213) internal successors, (9783), 6563 states have internal predecessors, (9783), 1510 states have call successors, (1510), 151 states have call predecessors, (1510), 151 states have return successors, (1510), 1468 states have call predecessors, (1510), 1510 states have call successors, (1510) [2024-11-27 20:06:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 12803 transitions. [2024-11-27 20:06:59,779 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 12803 transitions. Word has length 487 [2024-11-27 20:06:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:59,781 INFO L471 AbstractCegarLoop]: Abstraction has 8183 states and 12803 transitions. [2024-11-27 20:06:59,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 states have internal predecessors, (220), 13 states have call successors, (165), 6 states have call predecessors, (165), 12 states have return successors, (166), 13 states have call predecessors, (166), 13 states have call successors, (166) [2024-11-27 20:06:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 12803 transitions. [2024-11-27 20:06:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-27 20:06:59,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:59,800 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:59,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:07:00,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:07:00,001 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:07:00,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:07:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2023528253, now seen corresponding path program 1 times [2024-11-27 20:07:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:07:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638094283] [2024-11-27 20:07:00,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:07:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:07:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255403666] [2024-11-27 20:07:00,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:07:00,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:07:00,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:07:00,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:07:00,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:07:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:07:01,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:07:01,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:07:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 6125 proven. 303 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2024-11-27 20:07:37,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:07:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 87 proven. 141 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:07:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:07:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638094283] [2024-11-27 20:07:46,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:07:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255403666] [2024-11-27 20:07:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255403666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:07:46,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:07:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-27 20:07:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474672314] [2024-11-27 20:07:46,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:07:46,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:07:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:07:46,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:07:46,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=280, Unknown=7, NotChecked=0, Total=380 [2024-11-27 20:07:46,789 INFO L87 Difference]: Start difference. First operand 8183 states and 12803 transitions. Second operand has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 4 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (133), 4 states have call predecessors, (133), 4 states have call successors, (133) [2024-11-27 20:07:54,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:01,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:05,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:10,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:14,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:18,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:22,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:30,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:38,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:42,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:47,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:51,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:08:55,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:04,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:16,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:34,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:47,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:51,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:09:56,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:00,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:04,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:08,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:12,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:16,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:20,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:25,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:29,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:33,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:37,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:41,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:46,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:50,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:54,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:10:58,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:02,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:07,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:11,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:15,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:19,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:23,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:27,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:31,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:35,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:40,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:44,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:48,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:52,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:11:56,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:00,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:04,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:08,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:17,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:21,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:25,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:42,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:46,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:12:59,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:03,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:07,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:11,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:15,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:19,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:24,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:28,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:32,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:36,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:40,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:44,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:48,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:52,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:13:56,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:00,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:05,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:09,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:13,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:17,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:21,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:29,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:33,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:37,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:41,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:45,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:49,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:54,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-27 20:14:56,485 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-27 20:14:56,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-27 20:14:56,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 957 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 112.7s TimeCoverageRelationStatistics Valid=461, Invalid=1156, Unknown=23, NotChecked=0, Total=1640 [2024-11-27 20:14:56,487 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 239 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 435 mSolverCounterUnsat, 82 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 82 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:14:56,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 566 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1455 Invalid, 82 Unknown, 0 Unchecked, 353.9s Time] [2024-11-27 20:14:56,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:14:56,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:14:56,689 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:665) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:388) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-27 20:14:56,693 INFO L158 Benchmark]: Toolchain (without parser) took 606300.44ms. Allocated memory was 142.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 100.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-27 20:14:56,695 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:14:56,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 835.99ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 76.7MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 20:14:56,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 154.95ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 65.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:14:56,696 INFO L158 Benchmark]: Boogie Preprocessor took 185.02ms. Allocated memory is still 142.6MB. Free memory was 65.6MB in the beginning and 50.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:14:56,696 INFO L158 Benchmark]: RCFGBuilder took 2015.43ms. Allocated memory is still 142.6MB. Free memory was 50.7MB in the beginning and 45.7MB in the end (delta: 5.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2024-11-27 20:14:56,696 INFO L158 Benchmark]: TraceAbstraction took 603098.16ms. Allocated memory was 142.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 45.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-27 20:14:56,698 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 835.99ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 76.7MB in the end (delta: 23.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 154.95ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 65.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 185.02ms. Allocated memory is still 142.6MB. Free memory was 65.6MB in the beginning and 50.7MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 2015.43ms. Allocated memory is still 142.6MB. Free memory was 50.7MB in the beginning and 45.7MB in the end (delta: 5.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * TraceAbstraction took 603098.16ms. Allocated memory was 142.6MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 45.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/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_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/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 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:14:59,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:00,050 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-27 20:15:00,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:00,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:00,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:00,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:00,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:00,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:00,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:00,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:00,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:00,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:00,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:00,093 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:00,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:00,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:15:00,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:15:00,095 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:00,096 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:00,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:00,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:00,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:00,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:00,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:00,098 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:15:00,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:15:00,098 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:15:00,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:15:00,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:00,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:00,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:00,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:00,101 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/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 -> 6b45ccb3e1d6d85a9c8f7f52288c3291e482bbcbd2ab4e741715d19987b56944 [2024-11-27 20:15:00,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:00,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:00,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:00,550 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:00,551 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:00,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:15:04,285 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/4fc401298/477533fa8d344d969e21a424f9c3b7bc/FLAG9e8841c46 [2024-11-27 20:15:04,638 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:04,638 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:15:04,653 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/4fc401298/477533fa8d344d969e21a424f9c3b7bc/FLAG9e8841c46 [2024-11-27 20:15:04,671 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/data/4fc401298/477533fa8d344d969e21a424f9c3b7bc [2024-11-27 20:15:04,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:04,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:04,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:04,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:04,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:04,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:04" (1/1) ... [2024-11-27 20:15:04,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a200689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:04, skipping insertion in model container [2024-11-27 20:15:04,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:04" (1/1) ... [2024-11-27 20:15:04,722 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:04,961 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-27 20:15:05,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:05,258 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:05,273 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_6e6c13cc-f143-48d7-96ad-073e1ec64534/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-50.i[916,929] [2024-11-27 20:15:05,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:05,426 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:05,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05 WrapperNode [2024-11-27 20:15:05,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:05,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:05,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:05,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:05,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,529 INFO L138 Inliner]: procedures = 27, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 441 [2024-11-27 20:15:05,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:05,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:05,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:05,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:05,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,606 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:15:05,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,635 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:05,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:05,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:05,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:05,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (1/1) ... [2024-11-27 20:15:05,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:05,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:05,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:15:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:15:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:15:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:06,026 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:06,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:34,946 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-27 20:15:34,946 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:34,965 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:34,966 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:15:34,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:34 BoogieIcfgContainer [2024-11-27 20:15:34,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:34,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:34,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:34,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:34,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:04" (1/3) ... [2024-11-27 20:15:34,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aafc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:34, skipping insertion in model container [2024-11-27 20:15:34,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:05" (2/3) ... [2024-11-27 20:15:34,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aafc53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:34, skipping insertion in model container [2024-11-27 20:15:34,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:34" (3/3) ... [2024-11-27 20:15:34,979 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i [2024-11-27 20:15:34,998 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:35,001 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-50.i that has 2 procedures, 198 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:15:35,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:35,095 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;@1d98ad7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:35,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:15:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 119 states have internal predecessors, (175), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-27 20:15:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:15:35,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:35,131 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:35,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:35,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:35,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1525862898, now seen corresponding path program 1 times [2024-11-27 20:15:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897042793] [2024-11-27 20:15:35,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:35,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:35,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:15:35,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:15:35,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-27 20:15:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:37,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:15:37,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4904 proven. 0 refuted. 0 times theorem prover too weak. 6800 trivial. 0 not checked. [2024-11-27 20:15:38,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:38,074 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897042793] [2024-11-27 20:15:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897042793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:38,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:15:38,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586799598] [2024-11-27 20:15:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:38,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:15:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:38,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:15:38,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:15:38,127 INFO L87 Difference]: Start difference. First operand has 198 states, 118 states have (on average 1.4830508474576272) internal successors, (175), 119 states have internal predecessors, (175), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-27 20:15:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:38,215 INFO L93 Difference]: Finished difference Result 389 states and 729 transitions. [2024-11-27 20:15:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:15:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 478 [2024-11-27 20:15:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:38,229 INFO L225 Difference]: With dead ends: 389 [2024-11-27 20:15:38,229 INFO L226 Difference]: Without dead ends: 194 [2024-11-27 20:15:38,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:15:38,240 INFO L435 NwaCegarLoop]: 321 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, 321 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:38,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:15:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-27 20:15:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2024-11-27 20:15:38,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 115 states have (on average 1.4521739130434783) internal successors, (167), 115 states have internal predecessors, (167), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-27 20:15:38,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 321 transitions. [2024-11-27 20:15:38,379 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 321 transitions. Word has length 478 [2024-11-27 20:15:38,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:38,383 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 321 transitions. [2024-11-27 20:15:38,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2024-11-27 20:15:38,383 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 321 transitions. [2024-11-27 20:15:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:15:38,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:38,407 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:38,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:15:38,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:38,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:38,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1007335288, now seen corresponding path program 1 times [2024-11-27 20:15:38,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142886558] [2024-11-27 20:15:38,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:38,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:38,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:15:38,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:15:38,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-27 20:15:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:41,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:15:41,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:15:41,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:41,416 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:41,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142886558] [2024-11-27 20:15:41,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142886558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:41,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:41,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:41,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889689302] [2024-11-27 20:15:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:41,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:41,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:41,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:41,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:41,426 INFO L87 Difference]: Start difference. First operand 194 states and 321 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:15:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:41,973 INFO L93 Difference]: Finished difference Result 484 states and 805 transitions. [2024-11-27 20:15:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2024-11-27 20:15:41,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:41,988 INFO L225 Difference]: With dead ends: 484 [2024-11-27 20:15:41,988 INFO L226 Difference]: Without dead ends: 293 [2024-11-27 20:15:41,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:41,992 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 162 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:41,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 623 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:15:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-27 20:15:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2024-11-27 20:15:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 188 states have (on average 1.5053191489361701) internal successors, (283), 189 states have internal predecessors, (283), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-27 20:15:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 481 transitions. [2024-11-27 20:15:42,112 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 481 transitions. Word has length 478 [2024-11-27 20:15:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:42,117 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 481 transitions. [2024-11-27 20:15:42,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:15:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 481 transitions. [2024-11-27 20:15:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:15:42,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:42,133 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:42,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-27 20:15:42,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:42,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:42,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1724105872, now seen corresponding path program 1 times [2024-11-27 20:15:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922990787] [2024-11-27 20:15:42,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:42,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:42,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:15:42,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:15:42,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-27 20:15:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:45,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:15:45,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:15:45,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:45,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922990787] [2024-11-27 20:15:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922990787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:45,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:45,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:15:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005213498] [2024-11-27 20:15:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:45,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:45,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:45,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:45,376 INFO L87 Difference]: Start difference. First operand 290 states and 481 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:15:45,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:15:45,616 INFO L93 Difference]: Finished difference Result 584 states and 964 transitions. [2024-11-27 20:15:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:15:45,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2024-11-27 20:15:45,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:15:45,627 INFO L225 Difference]: With dead ends: 584 [2024-11-27 20:15:45,628 INFO L226 Difference]: Without dead ends: 297 [2024-11-27 20:15:45,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:45,631 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 166 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:15:45,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 679 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:15:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-27 20:15:45,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 212. [2024-11-27 20:15:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 132 states have (on average 1.4318181818181819) internal successors, (189), 132 states have internal predecessors, (189), 77 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2024-11-27 20:15:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 343 transitions. [2024-11-27 20:15:45,665 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 343 transitions. Word has length 478 [2024-11-27 20:15:45,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:15:45,667 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 343 transitions. [2024-11-27 20:15:45,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:15:45,668 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 343 transitions. [2024-11-27 20:15:45,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:15:45,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:45,680 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:45,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-27 20:15:45,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:45,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:45,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash -759188794, now seen corresponding path program 1 times [2024-11-27 20:15:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:15:45,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997989777] [2024-11-27 20:15:45,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:45,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:15:45,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:15:45,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:15:45,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-27 20:15:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:15:48,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:15:48,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:15:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:15:55,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:15:55,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:15:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997989777] [2024-11-27 20:15:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997989777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:15:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:15:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:15:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386469011] [2024-11-27 20:15:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:15:55,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:15:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:15:55,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:15:55,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:15:55,558 INFO L87 Difference]: Start difference. First operand 212 states and 343 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:15:58,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:15:59,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:16:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:00,254 INFO L93 Difference]: Finished difference Result 630 states and 1023 transitions. [2024-11-27 20:16:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:16:00,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2024-11-27 20:16:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:00,275 INFO L225 Difference]: With dead ends: 630 [2024-11-27 20:16:00,275 INFO L226 Difference]: Without dead ends: 421 [2024-11-27 20:16:00,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:16:00,281 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 94 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:00,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 623 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 20:16:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-27 20:16:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2024-11-27 20:16:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 260 states have (on average 1.4346153846153846) internal successors, (373), 260 states have internal predecessors, (373), 154 states have call successors, (154), 4 states have call predecessors, (154), 4 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-27 20:16:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 681 transitions. [2024-11-27 20:16:00,370 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 681 transitions. Word has length 478 [2024-11-27 20:16:00,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:00,372 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 681 transitions. [2024-11-27 20:16:00,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 681 transitions. [2024-11-27 20:16:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:16:00,377 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:00,377 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:00,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-27 20:16:00,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:00,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:00,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash -618640184, now seen corresponding path program 1 times [2024-11-27 20:16:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550857621] [2024-11-27 20:16:00,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:16:00,586 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:16:00,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-27 20:16:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:02,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:16:03,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 5922 proven. 117 refuted. 0 times theorem prover too weak. 5665 trivial. 0 not checked. [2024-11-27 20:16:06,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:16:09,450 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:09,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550857621] [2024-11-27 20:16:09,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550857621] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:09,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:16:09,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-27 20:16:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388922047] [2024-11-27 20:16:09,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:09,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:16:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:09,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:16:09,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:16:09,456 INFO L87 Difference]: Start difference. First operand 419 states and 681 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:14,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:16:21,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:16:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:21,837 INFO L93 Difference]: Finished difference Result 1251 states and 2037 transitions. [2024-11-27 20:16:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:16:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 478 [2024-11-27 20:16:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:21,911 INFO L225 Difference]: With dead ends: 1251 [2024-11-27 20:16:21,911 INFO L226 Difference]: Without dead ends: 835 [2024-11-27 20:16:21,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 948 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:16:21,915 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 605 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 311 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:21,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 495 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 170 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2024-11-27 20:16:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2024-11-27 20:16:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 833. [2024-11-27 20:16:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 516 states have (on average 1.434108527131783) internal successors, (740), 516 states have internal predecessors, (740), 308 states have call successors, (308), 8 states have call predecessors, (308), 8 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2024-11-27 20:16:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1356 transitions. [2024-11-27 20:16:22,065 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1356 transitions. Word has length 478 [2024-11-27 20:16:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:22,068 INFO L471 AbstractCegarLoop]: Abstraction has 833 states and 1356 transitions. [2024-11-27 20:16:22,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1356 transitions. [2024-11-27 20:16:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-27 20:16:22,077 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:22,078 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:22,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-27 20:16:22,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:22,278 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:22,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -752653690, now seen corresponding path program 1 times [2024-11-27 20:16:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908663793] [2024-11-27 20:16:22,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:22,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:16:22,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:16:22,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-27 20:16:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:24,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:16:24,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4806 proven. 63 refuted. 0 times theorem prover too weak. 6835 trivial. 0 not checked. [2024-11-27 20:16:26,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 165 proven. 63 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2024-11-27 20:16:29,757 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908663793] [2024-11-27 20:16:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908663793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:16:29,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:16:29,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-27 20:16:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890299690] [2024-11-27 20:16:29,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:16:29,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:16:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:29,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:16:29,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:16:29,761 INFO L87 Difference]: Start difference. First operand 833 states and 1356 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-27 20:16:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:33,504 INFO L93 Difference]: Finished difference Result 1695 states and 2737 transitions. [2024-11-27 20:16:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:16:33,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) Word has length 478 [2024-11-27 20:16:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:33,519 INFO L225 Difference]: With dead ends: 1695 [2024-11-27 20:16:33,520 INFO L226 Difference]: Without dead ends: 865 [2024-11-27 20:16:33,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 948 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:16:33,526 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 300 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:33,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 544 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:16:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2024-11-27 20:16:33,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 849. [2024-11-27 20:16:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 528 states have (on average 1.393939393939394) internal successors, (736), 528 states have internal predecessors, (736), 308 states have call successors, (308), 12 states have call predecessors, (308), 12 states have return successors, (308), 308 states have call predecessors, (308), 308 states have call successors, (308) [2024-11-27 20:16:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1352 transitions. [2024-11-27 20:16:33,692 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1352 transitions. Word has length 478 [2024-11-27 20:16:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:33,693 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1352 transitions. [2024-11-27 20:16:33,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 2 states have call successors, (98), 2 states have call predecessors, (98), 4 states have return successors, (99), 2 states have call predecessors, (99), 2 states have call successors, (99) [2024-11-27 20:16:33,694 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1352 transitions. [2024-11-27 20:16:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-27 20:16:33,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:33,701 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:33,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-27 20:16:33,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:33,902 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:33,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1956559012, now seen corresponding path program 1 times [2024-11-27 20:16:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460450634] [2024-11-27 20:16:33,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:33,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:16:33,905 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:16:33,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-27 20:16:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:36,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:16:36,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 1103 proven. 12 refuted. 0 times theorem prover too weak. 10589 trivial. 0 not checked. [2024-11-27 20:16:37,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:16:38,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460450634] [2024-11-27 20:16:38,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460450634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:16:38,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2017298946] [2024-11-27 20:16:38,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:38,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:16:38,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:16:38,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:16:38,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-27 20:16:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:43,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:16:43,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:16:44,232 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2017298946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:44,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:16:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-27 20:16:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375136271] [2024-11-27 20:16:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:44,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:16:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:44,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:16:44,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:16:44,236 INFO L87 Difference]: Start difference. First operand 849 states and 1352 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:48,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 20:16:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:49,396 INFO L93 Difference]: Finished difference Result 2118 states and 3367 transitions. [2024-11-27 20:16:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:16:49,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 479 [2024-11-27 20:16:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:49,409 INFO L225 Difference]: With dead ends: 2118 [2024-11-27 20:16:49,410 INFO L226 Difference]: Without dead ends: 1272 [2024-11-27 20:16:49,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:16:49,415 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 344 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:49,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 865 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-27 20:16:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2024-11-27 20:16:49,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1041. [2024-11-27 20:16:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 696 states have (on average 1.4482758620689655) internal successors, (1008), 697 states have internal predecessors, (1008), 328 states have call successors, (328), 16 states have call predecessors, (328), 16 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-27 20:16:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1664 transitions. [2024-11-27 20:16:49,580 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1664 transitions. Word has length 479 [2024-11-27 20:16:49,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:49,581 INFO L471 AbstractCegarLoop]: Abstraction has 1041 states and 1664 transitions. [2024-11-27 20:16:49,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:49,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1664 transitions. [2024-11-27 20:16:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-27 20:16:49,587 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:49,587 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:49,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-27 20:16:49,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-27 20:16:49,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:49,988 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:49,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 344263578, now seen corresponding path program 1 times [2024-11-27 20:16:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310422756] [2024-11-27 20:16:49,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:49,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:49,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:16:49,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:16:49,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-27 20:16:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:52,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:16:52,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:16:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2024-11-27 20:16:52,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:16:52,270 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:16:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310422756] [2024-11-27 20:16:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310422756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:16:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:16:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:16:52,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410740905] [2024-11-27 20:16:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:16:52,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:16:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:16:52,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:16:52,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:16:52,274 INFO L87 Difference]: Start difference. First operand 1041 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:16:53,037 INFO L93 Difference]: Finished difference Result 2499 states and 4030 transitions. [2024-11-27 20:16:53,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:16:53,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 479 [2024-11-27 20:16:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:16:53,054 INFO L225 Difference]: With dead ends: 2499 [2024-11-27 20:16:53,054 INFO L226 Difference]: Without dead ends: 1493 [2024-11-27 20:16:53,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:16:53,059 INFO L435 NwaCegarLoop]: 607 mSDtfsCounter, 309 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:16:53,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1507 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:16:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2024-11-27 20:16:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1048. [2024-11-27 20:16:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 700 states have (on average 1.44) internal successors, (1008), 701 states have internal predecessors, (1008), 330 states have call successors, (330), 17 states have call predecessors, (330), 17 states have return successors, (330), 329 states have call predecessors, (330), 330 states have call successors, (330) [2024-11-27 20:16:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1668 transitions. [2024-11-27 20:16:53,256 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1668 transitions. Word has length 479 [2024-11-27 20:16:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:16:53,258 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1668 transitions. [2024-11-27 20:16:53,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2024-11-27 20:16:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1668 transitions. [2024-11-27 20:16:53,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2024-11-27 20:16:53,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:16:53,263 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:16:53,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:16:53,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:53,464 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:16:53,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:16:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2119270940, now seen corresponding path program 1 times [2024-11-27 20:16:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:16:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767611331] [2024-11-27 20:16:53,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:16:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-27 20:16:53,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:16:53,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-27 20:16:53,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e6c13cc-f143-48d7-96ad-073e1ec64534/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-27 20:16:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:16:55,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 20:16:55,608 INFO L279 TraceCheckSpWp]: Computing forward predicates...