./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya --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 48c0e642396cb981ec97788bf4c6fd139bd12f99e5b4ac8264222e0d2b78e970 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:10:00,353 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:10:00,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:10:00,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:10:00,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:10:00,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:10:00,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:10:00,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:10:00,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:10:00,453 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:10:00,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:10:00,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:10:00,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:10:00,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:10:00,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:10:00,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:10:00,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:10:00,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:10:00,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:10:00,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:10:00,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:10:00,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:10:00,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:10:00,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:10:00,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:10:00,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:10:00,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:10:00,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:10:00,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:10:00,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:10:00,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:10:00,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:10:00,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:10:00,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:10:00,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:10:00,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:10:00,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:10:00,466 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:10:00,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:10:00,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:10:00,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:10:00,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:10:00,467 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48c0e642396cb981ec97788bf4c6fd139bd12f99e5b4ac8264222e0d2b78e970 [2023-11-29 05:10:00,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:10:00,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:10:00,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:10:00,709 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:10:00,710 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:10:00,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i [2023-11-29 05:10:03,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:10:03,746 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:10:03,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i [2023-11-29 05:10:03,757 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/data/e2280476f/53654ed2bf94464287b236fd25b50731/FLAG296840fdd [2023-11-29 05:10:03,773 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/data/e2280476f/53654ed2bf94464287b236fd25b50731 [2023-11-29 05:10:03,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:10:03,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:10:03,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:10:03,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:10:03,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:10:03,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:10:03" (1/1) ... [2023-11-29 05:10:03,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f878cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:03, skipping insertion in model container [2023-11-29 05:10:03,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:10:03" (1/1) ... [2023-11-29 05:10:03,825 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:10:03,981 WARN L240 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_afa67f42-cf7f-4041-b4de-9616f27a4f55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i[919,932] [2023-11-29 05:10:04,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:10:04,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:10:04,065 WARN L240 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_afa67f42-cf7f-4041-b4de-9616f27a4f55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i[919,932] [2023-11-29 05:10:04,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:10:04,112 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:10:04,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04 WrapperNode [2023-11-29 05:10:04,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:10:04,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:10:04,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:10:04,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:10:04,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,169 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 180 [2023-11-29 05:10:04,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:10:04,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:10:04,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:10:04,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:10:04,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,204 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]. [2023-11-29 05:10:04,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:10:04,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:10:04,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:10:04,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:10:04,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (1/1) ... [2023-11-29 05:10:04,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:10:04,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:04,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:10:04,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:10:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:10:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:10:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:10:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:10:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:10:04,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:10:04,394 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:10:04,397 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:10:04,759 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:10:04,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:10:04,818 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:10:04,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:10:04 BoogieIcfgContainer [2023-11-29 05:10:04,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:10:04,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:10:04,822 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:10:04,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:10:04,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:10:03" (1/3) ... [2023-11-29 05:10:04,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217badc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:10:04, skipping insertion in model container [2023-11-29 05:10:04,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:04" (2/3) ... [2023-11-29 05:10:04,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5217badc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:10:04, skipping insertion in model container [2023-11-29 05:10:04,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:10:04" (3/3) ... [2023-11-29 05:10:04,828 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-66.i [2023-11-29 05:10:04,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:10:04,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:10:04,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:10:04,903 INFO L357 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, mHoare=true, 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;@376d2cac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:10:04,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:10:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:10:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:10:04,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:04,922 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:04,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:04,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:04,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1600670833, now seen corresponding path program 1 times [2023-11-29 05:10:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:04,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558783486] [2023-11-29 05:10:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:04,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558783486] [2023-11-29 05:10:05,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:10:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995150529] [2023-11-29 05:10:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:05,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:05,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:10:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:05,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:10:05,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:05,384 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-11-29 05:10:05,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:10:05,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995150529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:10:05,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:10:05,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:10:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345658292] [2023-11-29 05:10:05,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:10:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:10:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:10:05,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:10:05,425 INFO L87 Difference]: Start difference. First operand has 76 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:10:05,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:05,468 INFO L93 Difference]: Finished difference Result 149 states and 266 transitions. [2023-11-29 05:10:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:10:05,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2023-11-29 05:10:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:05,478 INFO L225 Difference]: With dead ends: 149 [2023-11-29 05:10:05,479 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 05:10:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:10:05,486 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:05,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:10:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 05:10:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-29 05:10:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.48) internal successors, (74), 50 states have internal predecessors, (74), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:10:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 118 transitions. [2023-11-29 05:10:05,531 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 118 transitions. Word has length 146 [2023-11-29 05:10:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:05,532 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 118 transitions. [2023-11-29 05:10:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:10:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 118 transitions. [2023-11-29 05:10:05,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:10:05,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:05,537 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:05,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:05,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:10:05,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:05,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash -336969333, now seen corresponding path program 1 times [2023-11-29 05:10:05,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295442917] [2023-11-29 05:10:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:05,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917612934] [2023-11-29 05:10:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:05,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:05,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:05,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:10:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:05,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:10:05,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-29 05:10:06,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:10:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295442917] [2023-11-29 05:10:06,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917612934] [2023-11-29 05:10:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917612934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:10:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:10:06,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:10:06,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648791081] [2023-11-29 05:10:06,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:10:06,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:10:06,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:10:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:10:06,163 INFO L87 Difference]: Start difference. First operand 74 states and 118 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:10:06,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:06,335 INFO L93 Difference]: Finished difference Result 199 states and 317 transitions. [2023-11-29 05:10:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:10:06,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2023-11-29 05:10:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:06,339 INFO L225 Difference]: With dead ends: 199 [2023-11-29 05:10:06,339 INFO L226 Difference]: Without dead ends: 126 [2023-11-29 05:10:06,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:10:06,342 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 181 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:06,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 201 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:10:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-29 05:10:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2023-11-29 05:10:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 88 states have (on average 1.5) internal successors, (132), 89 states have internal predecessors, (132), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-29 05:10:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 196 transitions. [2023-11-29 05:10:06,366 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 196 transitions. Word has length 146 [2023-11-29 05:10:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:06,367 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 196 transitions. [2023-11-29 05:10:06,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-29 05:10:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 196 transitions. [2023-11-29 05:10:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-29 05:10:06,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:06,371 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:06,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:06,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:06,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:06,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1154617783, now seen corresponding path program 1 times [2023-11-29 05:10:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627984096] [2023-11-29 05:10:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:06,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:06,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511457142] [2023-11-29 05:10:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:06,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:06,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:06,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:10:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:06,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:10:06,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 481 proven. 33 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-11-29 05:10:06,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 30 proven. 33 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:10:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627984096] [2023-11-29 05:10:07,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511457142] [2023-11-29 05:10:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511457142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:07,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:10:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015645] [2023-11-29 05:10:07,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:10:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:10:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:10:07,077 INFO L87 Difference]: Start difference. First operand 123 states and 196 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-29 05:10:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:07,330 INFO L93 Difference]: Finished difference Result 204 states and 320 transitions. [2023-11-29 05:10:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:10:07,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 146 [2023-11-29 05:10:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:07,333 INFO L225 Difference]: With dead ends: 204 [2023-11-29 05:10:07,333 INFO L226 Difference]: Without dead ends: 80 [2023-11-29 05:10:07,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:10:07,336 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 131 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:07,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 188 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:10:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-29 05:10:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-11-29 05:10:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 53 states have internal predecessors, (74), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 05:10:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2023-11-29 05:10:07,350 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 118 transitions. Word has length 146 [2023-11-29 05:10:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:07,351 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 118 transitions. [2023-11-29 05:10:07,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-29 05:10:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 118 transitions. [2023-11-29 05:10:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 05:10:07,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:07,355 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:07,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:10:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:07,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:07,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -574518943, now seen corresponding path program 1 times [2023-11-29 05:10:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148823262] [2023-11-29 05:10:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:07,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:07,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345043452] [2023-11-29 05:10:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:07,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:07,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:07,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:07,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:10:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:07,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:10:07,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 453 proven. 39 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2023-11-29 05:10:08,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:10:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148823262] [2023-11-29 05:10:08,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345043452] [2023-11-29 05:10:08,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345043452] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:08,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 05:10:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619033300] [2023-11-29 05:10:08,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:10:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:10:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:10:08,440 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:10:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:09,045 INFO L93 Difference]: Finished difference Result 324 states and 484 transitions. [2023-11-29 05:10:09,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 05:10:09,046 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 147 [2023-11-29 05:10:09,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:09,049 INFO L225 Difference]: With dead ends: 324 [2023-11-29 05:10:09,050 INFO L226 Difference]: Without dead ends: 247 [2023-11-29 05:10:09,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:10:09,052 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 259 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:09,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 450 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:10:09,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-11-29 05:10:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 215. [2023-11-29 05:10:09,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 148 states have (on average 1.4054054054054055) internal successors, (208), 150 states have internal predecessors, (208), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 05:10:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 328 transitions. [2023-11-29 05:10:09,092 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 328 transitions. Word has length 147 [2023-11-29 05:10:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:09,093 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 328 transitions. [2023-11-29 05:10:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:10:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 328 transitions. [2023-11-29 05:10:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 05:10:09,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:09,096 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:09,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:10:09,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:09,299 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:09,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1352589862, now seen corresponding path program 1 times [2023-11-29 05:10:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290549447] [2023-11-29 05:10:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:09,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:09,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:09,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901193922] [2023-11-29 05:10:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:09,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:09,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:09,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:10:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:09,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:10:09,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 211 proven. 6 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2023-11-29 05:10:09,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:10:09,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:09,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290549447] [2023-11-29 05:10:09,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:09,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901193922] [2023-11-29 05:10:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901193922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:09,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:09,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 05:10:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355151941] [2023-11-29 05:10:09,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:09,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:10:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:10:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:10:09,885 INFO L87 Difference]: Start difference. First operand 215 states and 328 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:10:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:10,803 INFO L93 Difference]: Finished difference Result 834 states and 1244 transitions. [2023-11-29 05:10:10,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:10:10,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 148 [2023-11-29 05:10:10,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:10,811 INFO L225 Difference]: With dead ends: 834 [2023-11-29 05:10:10,811 INFO L226 Difference]: Without dead ends: 620 [2023-11-29 05:10:10,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=208, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:10:10,813 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 631 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:10,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 489 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:10:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-29 05:10:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 562. [2023-11-29 05:10:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 374 states have (on average 1.36096256684492) internal successors, (509), 380 states have internal predecessors, (509), 166 states have call successors, (166), 21 states have call predecessors, (166), 21 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-29 05:10:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 841 transitions. [2023-11-29 05:10:10,891 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 841 transitions. Word has length 148 [2023-11-29 05:10:10,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:10,891 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 841 transitions. [2023-11-29 05:10:10,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-11-29 05:10:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 841 transitions. [2023-11-29 05:10:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:10:10,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:10,894 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:10,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:10:11,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:11,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:11,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1562132618, now seen corresponding path program 1 times [2023-11-29 05:10:11,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:11,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744395818] [2023-11-29 05:10:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:11,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:11,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617391660] [2023-11-29 05:10:11,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:11,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:11,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:11,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:10:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:11,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:10:11,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 463 proven. 24 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2023-11-29 05:10:11,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 39 proven. 24 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-11-29 05:10:11,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:11,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744395818] [2023-11-29 05:10:11,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:11,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617391660] [2023-11-29 05:10:11,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617391660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:11,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:11,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:10:11,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18296098] [2023-11-29 05:10:11,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:11,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:10:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:10:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:10:11,497 INFO L87 Difference]: Start difference. First operand 562 states and 841 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 05:10:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:11,706 INFO L93 Difference]: Finished difference Result 1165 states and 1716 transitions. [2023-11-29 05:10:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:10:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 149 [2023-11-29 05:10:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:11,712 INFO L225 Difference]: With dead ends: 1165 [2023-11-29 05:10:11,712 INFO L226 Difference]: Without dead ends: 604 [2023-11-29 05:10:11,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:10:11,716 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:11,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 212 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:10:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-11-29 05:10:11,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 590. [2023-11-29 05:10:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 395 states have (on average 1.3316455696202532) internal successors, (526), 401 states have internal predecessors, (526), 166 states have call successors, (166), 28 states have call predecessors, (166), 28 states have return successors, (166), 160 states have call predecessors, (166), 166 states have call successors, (166) [2023-11-29 05:10:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 858 transitions. [2023-11-29 05:10:11,795 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 858 transitions. Word has length 149 [2023-11-29 05:10:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:11,796 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 858 transitions. [2023-11-29 05:10:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-11-29 05:10:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 858 transitions. [2023-11-29 05:10:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:10:11,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:11,798 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:10:11,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:10:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:11,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:12,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1696146124, now seen corresponding path program 1 times [2023-11-29 05:10:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:12,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248393896] [2023-11-29 05:10:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:12,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:12,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893949120] [2023-11-29 05:10:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:12,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:12,035 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:12,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afa67f42-cf7f-4041-b4de-9616f27a4f55/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:10:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:12,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 05:10:12,148 INFO L285 TraceCheckSpWp]: Computing forward predicates...