./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.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_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/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_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/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_905b3d41-106c-45f1-a183-06edcec75355/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 76c41dcfd5a0fc565e04810ec1e9f02e7d99352e7ba5541d180a675862fbcc19 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:14:16,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:14:16,413 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:14:16,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:14:16,419 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:14:16,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:14:16,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:14:16,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:14:16,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:14:16,446 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:14:16,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:14:16,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:14:16,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:14:16,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:14:16,449 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:14:16,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:14:16,450 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:14:16,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:14:16,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:14:16,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:14:16,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:14:16,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:14:16,454 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:14:16,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:14:16,455 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:14:16,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:14:16,456 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:14:16,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:14:16,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:14:16,457 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:14:16,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:14:16,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:14:16,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:14:16,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:14:16,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:14:16,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:14:16,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:14:16,460 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_905b3d41-106c-45f1-a183-06edcec75355/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76c41dcfd5a0fc565e04810ec1e9f02e7d99352e7ba5541d180a675862fbcc19 [2023-11-29 05:14:16,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:14:16,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:14:16,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:14:16,701 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:14:16,702 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:14:16,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-29 05:14:19,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:14:19,773 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:14:19,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-29 05:14:19,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/data/73e127843/ee88fcf7cccf4ccab841d197f1d8e496/FLAG3c85c0b37 [2023-11-29 05:14:19,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/data/73e127843/ee88fcf7cccf4ccab841d197f1d8e496 [2023-11-29 05:14:19,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:14:19,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:14:19,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:14:19,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:14:19,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:14:19,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:14:19" (1/1) ... [2023-11-29 05:14:19,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437603de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:19, skipping insertion in model container [2023-11-29 05:14:19,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:14:19" (1/1) ... [2023-11-29 05:14:19,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:14:20,022 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_905b3d41-106c-45f1-a183-06edcec75355/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-11-29 05:14:20,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:14:20,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:14:20,232 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_905b3d41-106c-45f1-a183-06edcec75355/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-55.i[916,929] [2023-11-29 05:14:20,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:14:20,338 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:14:20,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20 WrapperNode [2023-11-29 05:14:20,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:14:20,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:14:20,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:14:20,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:14:20,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,451 INFO L138 Inliner]: procedures = 26, calls = 131, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 929 [2023-11-29 05:14:20,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:14:20,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:14:20,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:14:20,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:14:20,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,477 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,554 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 05:14:20,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:14:20,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:14:20,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:14:20,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:14:20,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (1/1) ... [2023-11-29 05:14:20,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:14:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:20,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:14:20,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:14:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:14:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:14:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:14:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:14:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:14:20,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:14:20,864 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:14:20,866 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:14:21,951 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:14:21,999 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:14:21,999 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:14:22,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:14:21 BoogieIcfgContainer [2023-11-29 05:14:22,000 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:14:22,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:14:22,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:14:22,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:14:22,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:14:19" (1/3) ... [2023-11-29 05:14:22,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46200824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:14:22, skipping insertion in model container [2023-11-29 05:14:22,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:14:20" (2/3) ... [2023-11-29 05:14:22,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46200824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:14:22, skipping insertion in model container [2023-11-29 05:14:22,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:14:21" (3/3) ... [2023-11-29 05:14:22,010 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-55.i [2023-11-29 05:14:22,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:14:22,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:14:22,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:14:22,091 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;@6ea011a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:14:22,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:14:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 229 states have internal predecessors, (374), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 05:14:22,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-11-29 05:14:22,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:22,141 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:22,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:22,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash 844148316, now seen corresponding path program 1 times [2023-11-29 05:14:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527107328] [2023-11-29 05:14:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527107328] [2023-11-29 05:14:22,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:14:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484222750] [2023-11-29 05:14:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:22,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:22,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:22,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:22,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:14:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:23,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:14:23,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 27378 trivial. 0 not checked. [2023-11-29 05:14:23,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:23,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484222750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:14:23,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597439517] [2023-11-29 05:14:23,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:14:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:23,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:14:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:14:23,296 INFO L87 Difference]: Start difference. First operand has 349 states, 228 states have (on average 1.6403508771929824) internal successors, (374), 229 states have internal predecessors, (374), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) Second operand has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-29 05:14:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:23,387 INFO L93 Difference]: Finished difference Result 695 states and 1336 transitions. [2023-11-29 05:14:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:14:23,390 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) Word has length 748 [2023-11-29 05:14:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:23,405 INFO L225 Difference]: With dead ends: 695 [2023-11-29 05:14:23,405 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 05:14:23,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 747 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 05:14:23,417 INFO L413 NwaCegarLoop]: 597 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, 597 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 05:14:23,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 597 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 05:14:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-29 05:14:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.60352422907489) internal successors, (364), 227 states have internal predecessors, (364), 118 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2023-11-29 05:14:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 600 transitions. [2023-11-29 05:14:23,529 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 600 transitions. Word has length 748 [2023-11-29 05:14:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:23,530 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 600 transitions. [2023-11-29 05:14:23,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.5) internal successors, (163), 2 states have internal predecessors, (163), 2 states have call successors, (118), 2 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-29 05:14:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 600 transitions. [2023-11-29 05:14:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-11-29 05:14:23,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:23,560 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:23,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:23,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:14:23,761 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:23,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:23,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1737313448, now seen corresponding path program 1 times [2023-11-29 05:14:23,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:23,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270803993] [2023-11-29 05:14:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:23,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:23,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920875494] [2023-11-29 05:14:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:23,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:23,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:23,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:23,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:14:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:24,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:24,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:24,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:24,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270803993] [2023-11-29 05:14:24,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:24,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920875494] [2023-11-29 05:14:24,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920875494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:24,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:24,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140239546] [2023-11-29 05:14:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:24,528 INFO L87 Difference]: Start difference. First operand 347 states and 600 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:24,651 INFO L93 Difference]: Finished difference Result 1039 states and 1798 transitions. [2023-11-29 05:14:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 749 [2023-11-29 05:14:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:24,663 INFO L225 Difference]: With dead ends: 1039 [2023-11-29 05:14:24,663 INFO L226 Difference]: Without dead ends: 693 [2023-11-29 05:14:24,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:24,667 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 596 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:24,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1480 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-29 05:14:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2023-11-29 05:14:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 452 states have (on average 1.6039823008849559) internal successors, (725), 452 states have internal predecessors, (725), 236 states have call successors, (236), 2 states have call predecessors, (236), 2 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2023-11-29 05:14:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1197 transitions. [2023-11-29 05:14:24,850 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1197 transitions. Word has length 749 [2023-11-29 05:14:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:24,853 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1197 transitions. [2023-11-29 05:14:24,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1197 transitions. [2023-11-29 05:14:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-11-29 05:14:24,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:24,863 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:24,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:14:25,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:25,064 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:25,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash 139749782, now seen corresponding path program 1 times [2023-11-29 05:14:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:25,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045088269] [2023-11-29 05:14:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:25,191 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:25,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939512332] [2023-11-29 05:14:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:25,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:25,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:25,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:25,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:14:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:25,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:25,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:25,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:25,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:25,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045088269] [2023-11-29 05:14:25,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:25,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939512332] [2023-11-29 05:14:25,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939512332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:25,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:25,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526773456] [2023-11-29 05:14:25,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:25,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:25,744 INFO L87 Difference]: Start difference. First operand 691 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:25,821 INFO L93 Difference]: Finished difference Result 1389 states and 2409 transitions. [2023-11-29 05:14:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 749 [2023-11-29 05:14:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:25,833 INFO L225 Difference]: With dead ends: 1389 [2023-11-29 05:14:25,833 INFO L226 Difference]: Without dead ends: 699 [2023-11-29 05:14:25,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:25,837 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 4 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:25,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1181 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-29 05:14:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-29 05:14:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 458 states have (on average 1.6004366812227073) internal successors, (733), 458 states have internal predecessors, (733), 236 states have call successors, (236), 2 states have call predecessors, (236), 2 states have return successors, (236), 236 states have call predecessors, (236), 236 states have call successors, (236) [2023-11-29 05:14:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1205 transitions. [2023-11-29 05:14:25,953 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1205 transitions. Word has length 749 [2023-11-29 05:14:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:25,955 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1205 transitions. [2023-11-29 05:14:25,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1205 transitions. [2023-11-29 05:14:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-29 05:14:25,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:25,965 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:25,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:14:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:26,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:26,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -517947355, now seen corresponding path program 1 times [2023-11-29 05:14:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165423023] [2023-11-29 05:14:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:26,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353290462] [2023-11-29 05:14:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:26,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:26,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:26,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:14:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:26,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:14:26,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:26,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165423023] [2023-11-29 05:14:26,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353290462] [2023-11-29 05:14:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353290462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:26,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:26,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:14:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949965985] [2023-11-29 05:14:26,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:26,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:14:26,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:26,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:14:26,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:26,902 INFO L87 Difference]: Start difference. First operand 697 states and 1205 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:27,380 INFO L93 Difference]: Finished difference Result 2957 states and 5131 transitions. [2023-11-29 05:14:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:14:27,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-29 05:14:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:27,403 INFO L225 Difference]: With dead ends: 2957 [2023-11-29 05:14:27,404 INFO L226 Difference]: Without dead ends: 2261 [2023-11-29 05:14:27,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 748 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 05:14:27,409 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1261 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:27,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2575 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:14:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2023-11-29 05:14:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1449. [2023-11-29 05:14:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1096 states have (on average 1.707116788321168) internal successors, (1871), 1098 states have internal predecessors, (1871), 348 states have call successors, (348), 4 states have call predecessors, (348), 4 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2023-11-29 05:14:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2567 transitions. [2023-11-29 05:14:27,807 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2567 transitions. Word has length 750 [2023-11-29 05:14:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:27,808 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2567 transitions. [2023-11-29 05:14:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2567 transitions. [2023-11-29 05:14:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-29 05:14:27,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:27,819 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:27,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:14:28,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:28,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:28,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -796370585, now seen corresponding path program 1 times [2023-11-29 05:14:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902001114] [2023-11-29 05:14:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:28,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:28,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944931762] [2023-11-29 05:14:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:28,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:28,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:28,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:28,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:14:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:28,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:14:28,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:28,701 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:28,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:28,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902001114] [2023-11-29 05:14:28,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944931762] [2023-11-29 05:14:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944931762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:28,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:28,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:14:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341844712] [2023-11-29 05:14:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:28,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:14:28,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:14:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:14:28,707 INFO L87 Difference]: Start difference. First operand 1449 states and 2567 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:29,230 INFO L93 Difference]: Finished difference Result 5315 states and 9271 transitions. [2023-11-29 05:14:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:14:29,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-29 05:14:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:29,266 INFO L225 Difference]: With dead ends: 5315 [2023-11-29 05:14:29,266 INFO L226 Difference]: Without dead ends: 3867 [2023-11-29 05:14:29,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 748 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 05:14:29,274 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1261 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:29,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2005 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:14:29,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2023-11-29 05:14:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 2543. [2023-11-29 05:14:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 1994 states have (on average 1.714643931795386) internal successors, (3419), 2000 states have internal predecessors, (3419), 540 states have call successors, (540), 8 states have call predecessors, (540), 8 states have return successors, (540), 534 states have call predecessors, (540), 540 states have call successors, (540) [2023-11-29 05:14:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 4499 transitions. [2023-11-29 05:14:29,697 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 4499 transitions. Word has length 750 [2023-11-29 05:14:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:29,699 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 4499 transitions. [2023-11-29 05:14:29,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 4499 transitions. [2023-11-29 05:14:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-29 05:14:29,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:29,711 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:29,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:14:29,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:29,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:29,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash 589832809, now seen corresponding path program 1 times [2023-11-29 05:14:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:29,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835633929] [2023-11-29 05:14:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:29,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:30,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910692256] [2023-11-29 05:14:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:30,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:30,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:30,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:30,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:14:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:30,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:30,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:30,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:30,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835633929] [2023-11-29 05:14:30,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910692256] [2023-11-29 05:14:30,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910692256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:30,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:30,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600615962] [2023-11-29 05:14:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:30,631 INFO L87 Difference]: Start difference. First operand 2543 states and 4499 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:30,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:30,924 INFO L93 Difference]: Finished difference Result 6671 states and 11734 transitions. [2023-11-29 05:14:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 750 [2023-11-29 05:14:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:30,955 INFO L225 Difference]: With dead ends: 6671 [2023-11-29 05:14:30,955 INFO L226 Difference]: Without dead ends: 4129 [2023-11-29 05:14:30,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:30,965 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 273 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:30,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1167 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2023-11-29 05:14:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4123. [2023-11-29 05:14:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 3158 states have (on average 1.6842938568714376) internal successors, (5319), 3172 states have internal predecessors, (5319), 948 states have call successors, (948), 16 states have call predecessors, (948), 16 states have return successors, (948), 934 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-29 05:14:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 7215 transitions. [2023-11-29 05:14:31,351 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 7215 transitions. Word has length 750 [2023-11-29 05:14:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:31,352 INFO L495 AbstractCegarLoop]: Abstraction has 4123 states and 7215 transitions. [2023-11-29 05:14:31,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 7215 transitions. [2023-11-29 05:14:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:31,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:31,362 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:31,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:14:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:31,563 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:31,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash -93542338, now seen corresponding path program 1 times [2023-11-29 05:14:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827198073] [2023-11-29 05:14:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:31,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:31,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330543712] [2023-11-29 05:14:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:31,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:31,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:31,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:14:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:32,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:32,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:32,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827198073] [2023-11-29 05:14:32,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330543712] [2023-11-29 05:14:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330543712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314758915] [2023-11-29 05:14:32,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,238 INFO L87 Difference]: Start difference. First operand 4123 states and 7215 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:32,576 INFO L93 Difference]: Finished difference Result 11931 states and 20811 transitions. [2023-11-29 05:14:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:14:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:32,620 INFO L225 Difference]: With dead ends: 11931 [2023-11-29 05:14:32,620 INFO L226 Difference]: Without dead ends: 7809 [2023-11-29 05:14:32,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:32,631 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 492 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:32,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1509 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:14:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2023-11-29 05:14:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 4887. [2023-11-29 05:14:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 3922 states have (on average 1.7106068332483426) internal successors, (6709), 3936 states have internal predecessors, (6709), 948 states have call successors, (948), 16 states have call predecessors, (948), 16 states have return successors, (948), 934 states have call predecessors, (948), 948 states have call successors, (948) [2023-11-29 05:14:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 8605 transitions. [2023-11-29 05:14:33,281 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 8605 transitions. Word has length 751 [2023-11-29 05:14:33,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:33,282 INFO L495 AbstractCegarLoop]: Abstraction has 4887 states and 8605 transitions. [2023-11-29 05:14:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:33,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 8605 transitions. [2023-11-29 05:14:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:33,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:33,299 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:33,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:14:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:14:33,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:33,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 799944000, now seen corresponding path program 1 times [2023-11-29 05:14:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:33,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724242011] [2023-11-29 05:14:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:33,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:33,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445469558] [2023-11-29 05:14:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:33,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:33,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:33,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:33,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:14:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:34,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:14:34,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:34,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724242011] [2023-11-29 05:14:34,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445469558] [2023-11-29 05:14:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445469558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:34,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:14:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206431686] [2023-11-29 05:14:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:14:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:14:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:14:34,150 INFO L87 Difference]: Start difference. First operand 4887 states and 8605 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:35,445 INFO L93 Difference]: Finished difference Result 17442 states and 30507 transitions. [2023-11-29 05:14:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:14:35,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:14:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:35,499 INFO L225 Difference]: With dead ends: 17442 [2023-11-29 05:14:35,499 INFO L226 Difference]: Without dead ends: 12556 [2023-11-29 05:14:35,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:14:35,512 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 999 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:35,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 2621 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:14:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2023-11-29 05:14:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 11949. [2023-11-29 05:14:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11949 states, 9084 states have (on average 1.6621532364597094) internal successors, (15099), 9131 states have internal predecessors, (15099), 2812 states have call successors, (2812), 52 states have call predecessors, (2812), 52 states have return successors, (2812), 2765 states have call predecessors, (2812), 2812 states have call successors, (2812) [2023-11-29 05:14:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11949 states to 11949 states and 20723 transitions. [2023-11-29 05:14:36,573 INFO L78 Accepts]: Start accepts. Automaton has 11949 states and 20723 transitions. Word has length 751 [2023-11-29 05:14:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:36,575 INFO L495 AbstractCegarLoop]: Abstraction has 11949 states and 20723 transitions. [2023-11-29 05:14:36,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:36,576 INFO L276 IsEmpty]: Start isEmpty. Operand 11949 states and 20723 transitions. [2023-11-29 05:14:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:36,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:36,598 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:36,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:14:36,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:36,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:36,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 822576254, now seen corresponding path program 1 times [2023-11-29 05:14:36,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:36,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139098099] [2023-11-29 05:14:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:36,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404759100] [2023-11-29 05:14:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:36,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:36,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:14:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:37,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 1712 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:37,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:37,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:37,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139098099] [2023-11-29 05:14:37,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:37,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404759100] [2023-11-29 05:14:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404759100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:37,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985770412] [2023-11-29 05:14:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:37,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:37,539 INFO L87 Difference]: Start difference. First operand 11949 states and 20723 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:38,471 INFO L93 Difference]: Finished difference Result 35191 states and 61078 transitions. [2023-11-29 05:14:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:14:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:38,547 INFO L225 Difference]: With dead ends: 35191 [2023-11-29 05:14:38,547 INFO L226 Difference]: Without dead ends: 23357 [2023-11-29 05:14:38,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:38,585 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 342 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:38,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1180 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23357 states. [2023-11-29 05:14:40,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23357 to 23351. [2023-11-29 05:14:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23351 states, 17876 states have (on average 1.663627209666592) internal successors, (29739), 17971 states have internal predecessors, (29739), 5372 states have call successors, (5372), 102 states have call predecessors, (5372), 102 states have return successors, (5372), 5277 states have call predecessors, (5372), 5372 states have call successors, (5372) [2023-11-29 05:14:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23351 states to 23351 states and 40483 transitions. [2023-11-29 05:14:40,407 INFO L78 Accepts]: Start accepts. Automaton has 23351 states and 40483 transitions. Word has length 751 [2023-11-29 05:14:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:40,409 INFO L495 AbstractCegarLoop]: Abstraction has 23351 states and 40483 transitions. [2023-11-29 05:14:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 23351 states and 40483 transitions. [2023-11-29 05:14:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:40,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:40,454 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:40,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:40,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:40,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1080741692, now seen corresponding path program 1 times [2023-11-29 05:14:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409889164] [2023-11-29 05:14:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:40,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:40,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354611632] [2023-11-29 05:14:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:40,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:40,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:40,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:40,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:14:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:41,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:14:41,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:41,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:41,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409889164] [2023-11-29 05:14:41,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:41,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354611632] [2023-11-29 05:14:41,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354611632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:41,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:41,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:14:41,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692145830] [2023-11-29 05:14:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:41,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:14:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:14:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:41,380 INFO L87 Difference]: Start difference. First operand 23351 states and 40483 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:43,389 INFO L93 Difference]: Finished difference Result 68271 states and 118385 transitions. [2023-11-29 05:14:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:14:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:14:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:43,490 INFO L225 Difference]: With dead ends: 68271 [2023-11-29 05:14:43,490 INFO L226 Difference]: Without dead ends: 45035 [2023-11-29 05:14:43,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:14:43,549 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 345 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:43,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1262 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:14:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45035 states. [2023-11-29 05:14:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45035 to 44937. [2023-11-29 05:14:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44937 states, 34949 states have (on average 1.665741509056053) internal successors, (58216), 35140 states have internal predecessors, (58216), 9788 states have call successors, (9788), 199 states have call predecessors, (9788), 199 states have return successors, (9788), 9597 states have call predecessors, (9788), 9788 states have call successors, (9788) [2023-11-29 05:14:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44937 states to 44937 states and 77792 transitions. [2023-11-29 05:14:46,450 INFO L78 Accepts]: Start accepts. Automaton has 44937 states and 77792 transitions. Word has length 751 [2023-11-29 05:14:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:46,451 INFO L495 AbstractCegarLoop]: Abstraction has 44937 states and 77792 transitions. [2023-11-29 05:14:46,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 44937 states and 77792 transitions. [2023-11-29 05:14:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:46,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:46,497 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:46,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:14:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:46,698 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:46,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:46,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1337162374, now seen corresponding path program 1 times [2023-11-29 05:14:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:46,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487497476] [2023-11-29 05:14:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:46,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273800808] [2023-11-29 05:14:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:46,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:46,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:46,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:14:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:47,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:14:47,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 13833 proven. 189 refuted. 0 times theorem prover too weak. 13590 trivial. 0 not checked. [2023-11-29 05:14:47,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:14:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 162 proven. 189 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-11-29 05:14:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487497476] [2023-11-29 05:14:48,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273800808] [2023-11-29 05:14:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273800808] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:14:48,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:14:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:14:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054064175] [2023-11-29 05:14:48,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:14:48,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:14:48,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:48,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:14:48,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:14:48,369 INFO L87 Difference]: Start difference. First operand 44937 states and 77792 transitions. Second operand has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) [2023-11-29 05:14:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:50,276 INFO L93 Difference]: Finished difference Result 74843 states and 130071 transitions. [2023-11-29 05:14:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:14:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) Word has length 751 [2023-11-29 05:14:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:50,339 INFO L225 Difference]: With dead ends: 74843 [2023-11-29 05:14:50,340 INFO L226 Difference]: Without dead ends: 30025 [2023-11-29 05:14:50,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1494 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 05:14:50,400 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 333 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:50,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1147 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:14:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2023-11-29 05:14:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 26085. [2023-11-29 05:14:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26085 states, 20800 states have (on average 1.6639903846153845) internal successors, (34611), 20895 states have internal predecessors, (34611), 5132 states have call successors, (5132), 152 states have call predecessors, (5132), 152 states have return successors, (5132), 5037 states have call predecessors, (5132), 5132 states have call successors, (5132) [2023-11-29 05:14:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26085 states to 26085 states and 44875 transitions. [2023-11-29 05:14:52,550 INFO L78 Accepts]: Start accepts. Automaton has 26085 states and 44875 transitions. Word has length 751 [2023-11-29 05:14:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:52,551 INFO L495 AbstractCegarLoop]: Abstraction has 26085 states and 44875 transitions. [2023-11-29 05:14:52,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 3 states have call predecessors, (182), 3 states have call successors, (182) [2023-11-29 05:14:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 26085 states and 44875 transitions. [2023-11-29 05:14:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:14:52,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:52,570 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:52,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:14:52,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:52,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:52,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1250641850, now seen corresponding path program 1 times [2023-11-29 05:14:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732206891] [2023-11-29 05:14:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:52,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:52,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500208692] [2023-11-29 05:14:52,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:52,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:52,842 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:52,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:14:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:53,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:14:53,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:14:53,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:53,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732206891] [2023-11-29 05:14:53,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500208692] [2023-11-29 05:14:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500208692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:53,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:53,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:14:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683058362] [2023-11-29 05:14:53,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:53,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:14:53,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:14:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:14:53,365 INFO L87 Difference]: Start difference. First operand 26085 states and 44875 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:14:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:57,657 INFO L93 Difference]: Finished difference Result 99849 states and 170867 transitions. [2023-11-29 05:14:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:14:57,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:14:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:57,791 INFO L225 Difference]: With dead ends: 99849 [2023-11-29 05:14:57,791 INFO L226 Difference]: Without dead ends: 73887 [2023-11-29 05:14:57,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:14:57,838 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 2837 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 4110 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:57,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 4110 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:14:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73887 states. [2023-11-29 05:15:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73887 to 55509. [2023-11-29 05:15:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55509 states, 45012 states have (on average 1.6817293166266774) internal successors, (75698), 45201 states have internal predecessors, (75698), 10196 states have call successors, (10196), 300 states have call predecessors, (10196), 300 states have return successors, (10196), 10007 states have call predecessors, (10196), 10196 states have call successors, (10196) [2023-11-29 05:15:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55509 states to 55509 states and 96090 transitions. [2023-11-29 05:15:03,008 INFO L78 Accepts]: Start accepts. Automaton has 55509 states and 96090 transitions. Word has length 751 [2023-11-29 05:15:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:03,010 INFO L495 AbstractCegarLoop]: Abstraction has 55509 states and 96090 transitions. [2023-11-29 05:15:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:15:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 55509 states and 96090 transitions. [2023-11-29 05:15:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:15:03,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:03,066 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:03,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:15:03,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:03,267 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:03,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:03,268 INFO L85 PathProgramCache]: Analyzing trace with hash -121165448, now seen corresponding path program 1 times [2023-11-29 05:15:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:03,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038087340] [2023-11-29 05:15:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:03,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:03,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:15:03,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257747109] [2023-11-29 05:15:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:03,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:03,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:03,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:15:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:04,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:15:04,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:15:04,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038087340] [2023-11-29 05:15:04,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:15:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257747109] [2023-11-29 05:15:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257747109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:04,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:15:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103548266] [2023-11-29 05:15:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:15:04,170 INFO L87 Difference]: Start difference. First operand 55509 states and 96090 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:15:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:10,519 INFO L93 Difference]: Finished difference Result 166217 states and 287544 transitions. [2023-11-29 05:15:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:15:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:15:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:10,768 INFO L225 Difference]: With dead ends: 166217 [2023-11-29 05:15:10,768 INFO L226 Difference]: Without dead ends: 110831 [2023-11-29 05:15:10,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:15:10,845 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 980 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:10,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 2675 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:15:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110831 states. [2023-11-29 05:15:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110831 to 62773. [2023-11-29 05:15:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62773 states, 51830 states have (on average 1.6920702295967587) internal successors, (87700), 52027 states have internal predecessors, (87700), 10604 states have call successors, (10604), 338 states have call predecessors, (10604), 338 states have return successors, (10604), 10407 states have call predecessors, (10604), 10604 states have call successors, (10604) [2023-11-29 05:15:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62773 states to 62773 states and 108908 transitions. [2023-11-29 05:15:17,219 INFO L78 Accepts]: Start accepts. Automaton has 62773 states and 108908 transitions. Word has length 751 [2023-11-29 05:15:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:15:17,220 INFO L495 AbstractCegarLoop]: Abstraction has 62773 states and 108908 transitions. [2023-11-29 05:15:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:15:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 62773 states and 108908 transitions. [2023-11-29 05:15:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:15:17,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:15:17,470 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:17,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:15:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:17,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:15:17,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:15:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2096464950, now seen corresponding path program 1 times [2023-11-29 05:15:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:15:17,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125708013] [2023-11-29 05:15:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:17,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:15:17,751 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:15:17,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925230100] [2023-11-29 05:15:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:15:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:15:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:15:17,754 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:15:17,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:15:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:15:18,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:15:18,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:15:18,363 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:15:18,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:15:18,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:15:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125708013] [2023-11-29 05:15:18,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:15:18,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925230100] [2023-11-29 05:15:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925230100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:15:18,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:15:18,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:15:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584205925] [2023-11-29 05:15:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:15:18,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:15:18,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:15:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:15:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:15:18,368 INFO L87 Difference]: Start difference. First operand 62773 states and 108908 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:15:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:38,689 INFO L93 Difference]: Finished difference Result 314757 states and 535356 transitions. [2023-11-29 05:15:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:15:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:15:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:39,699 INFO L225 Difference]: With dead ends: 314757 [2023-11-29 05:15:39,700 INFO L226 Difference]: Without dead ends: 252107 [2023-11-29 05:15:39,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 753 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:15:39,818 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 2939 mSDsluCounter, 4485 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:39,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2939 Valid, 5402 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:15:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252107 states. [2023-11-29 05:16:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252107 to 182793. [2023-11-29 05:16:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182793 states, 141050 states have (on average 1.6306983339241403) internal successors, (230010), 141819 states have internal predecessors, (230010), 40444 states have call successors, (40444), 1298 states have call predecessors, (40444), 1298 states have return successors, (40444), 39675 states have call predecessors, (40444), 40444 states have call successors, (40444) [2023-11-29 05:16:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182793 states to 182793 states and 310898 transitions. [2023-11-29 05:16:01,342 INFO L78 Accepts]: Start accepts. Automaton has 182793 states and 310898 transitions. Word has length 751 [2023-11-29 05:16:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:01,342 INFO L495 AbstractCegarLoop]: Abstraction has 182793 states and 310898 transitions. [2023-11-29 05:16:01,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:16:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 182793 states and 310898 transitions. [2023-11-29 05:16:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:16:01,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:01,405 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:01,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:16:01,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:01,605 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:01,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2080712646, now seen corresponding path program 1 times [2023-11-29 05:16:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:01,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078265244] [2023-11-29 05:16:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:01,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:01,672 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229434838] [2023-11-29 05:16:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:01,674 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:01,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:16:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:02,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:16:02,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 11373 proven. 99 refuted. 0 times theorem prover too weak. 16140 trivial. 0 not checked. [2023-11-29 05:16:02,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:16:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 252 proven. 99 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-11-29 05:16:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078265244] [2023-11-29 05:16:03,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:16:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229434838] [2023-11-29 05:16:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229434838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:16:03,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:16:03,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:16:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313731506] [2023-11-29 05:16:03,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:16:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:16:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:16:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:16:03,010 INFO L87 Difference]: Start difference. First operand 182793 states and 310898 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 05:16:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:11,974 INFO L93 Difference]: Finished difference Result 321729 states and 552259 transitions. [2023-11-29 05:16:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:16:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) Word has length 751 [2023-11-29 05:16:11,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:12,176 INFO L225 Difference]: With dead ends: 321729 [2023-11-29 05:16:12,176 INFO L226 Difference]: Without dead ends: 122483 [2023-11-29 05:16:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1494 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:16:12,375 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 629 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:12,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1164 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:16:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122483 states. [2023-11-29 05:16:22,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122483 to 121465. [2023-11-29 05:16:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121465 states, 100058 states have (on average 1.683443602710428) internal successors, (168442), 100443 states have internal predecessors, (168442), 20732 states have call successors, (20732), 674 states have call predecessors, (20732), 674 states have return successors, (20732), 20347 states have call predecessors, (20732), 20732 states have call successors, (20732) [2023-11-29 05:16:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121465 states to 121465 states and 209906 transitions. [2023-11-29 05:16:22,409 INFO L78 Accepts]: Start accepts. Automaton has 121465 states and 209906 transitions. Word has length 751 [2023-11-29 05:16:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:22,410 INFO L495 AbstractCegarLoop]: Abstraction has 121465 states and 209906 transitions. [2023-11-29 05:16:22,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 2 states have call successors, (151), 2 states have call predecessors, (151), 4 states have return successors, (152), 2 states have call predecessors, (152), 2 states have call successors, (152) [2023-11-29 05:16:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 121465 states and 209906 transitions. [2023-11-29 05:16:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:16:22,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:22,441 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:22,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:16:22,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:16:22,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:22,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:22,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2123530552, now seen corresponding path program 1 times [2023-11-29 05:16:22,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:22,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314780782] [2023-11-29 05:16:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:22,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:22,707 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919673377] [2023-11-29 05:16:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:22,708 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:22,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:16:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:23,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:16:23,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:16:23,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:16:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314780782] [2023-11-29 05:16:23,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:16:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919673377] [2023-11-29 05:16:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919673377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:16:23,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:16:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:16:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105180958] [2023-11-29 05:16:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:16:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:16:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:16:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:16:23,294 INFO L87 Difference]: Start difference. First operand 121465 states and 209906 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:16:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:30,903 INFO L93 Difference]: Finished difference Result 243575 states and 420517 transitions. [2023-11-29 05:16:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:16:30,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:16:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:31,101 INFO L225 Difference]: With dead ends: 243575 [2023-11-29 05:16:31,101 INFO L226 Difference]: Without dead ends: 122233 [2023-11-29 05:16:31,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 749 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:16:31,220 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 321 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:31,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1267 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:16:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122233 states. [2023-11-29 05:16:38,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122233 to 104199. [2023-11-29 05:16:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104199 states, 92101 states have (on average 1.7197315990054396) internal successors, (158389), 92290 states have internal predecessors, (158389), 11520 states have call successors, (11520), 577 states have call predecessors, (11520), 577 states have return successors, (11520), 11331 states have call predecessors, (11520), 11520 states have call successors, (11520) [2023-11-29 05:16:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104199 states to 104199 states and 181429 transitions. [2023-11-29 05:16:38,641 INFO L78 Accepts]: Start accepts. Automaton has 104199 states and 181429 transitions. Word has length 751 [2023-11-29 05:16:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:38,642 INFO L495 AbstractCegarLoop]: Abstraction has 104199 states and 181429 transitions. [2023-11-29 05:16:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:16:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 104199 states and 181429 transitions. [2023-11-29 05:16:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-29 05:16:38,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:38,678 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:38,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:16:38,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:38,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:38,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2006946680, now seen corresponding path program 1 times [2023-11-29 05:16:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882982483] [2023-11-29 05:16:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:38,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:38,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763585738] [2023-11-29 05:16:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:38,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:38,943 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:38,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:16:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:39,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:16:39,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:16:39,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:16:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:39,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882982483] [2023-11-29 05:16:39,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:16:39,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763585738] [2023-11-29 05:16:39,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763585738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:16:39,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:16:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:16:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796587623] [2023-11-29 05:16:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:16:39,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:16:39,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:39,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:16:39,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:16:39,513 INFO L87 Difference]: Start difference. First operand 104199 states and 181429 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:16:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:49,638 INFO L93 Difference]: Finished difference Result 283933 states and 492647 transitions. [2023-11-29 05:16:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:16:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 751 [2023-11-29 05:16:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:49,926 INFO L225 Difference]: With dead ends: 283933 [2023-11-29 05:16:49,926 INFO L226 Difference]: Without dead ends: 165045 [2023-11-29 05:16:50,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:16:50,036 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 1609 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3603 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:50,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3603 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 05:16:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165045 states. [2023-11-29 05:17:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165045 to 156529. [2023-11-29 05:17:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156529 states, 133431 states have (on average 1.6846684803381522) internal successors, (224787), 133808 states have internal predecessors, (224787), 21988 states have call successors, (21988), 1109 states have call predecessors, (21988), 1109 states have return successors, (21988), 21611 states have call predecessors, (21988), 21988 states have call successors, (21988) [2023-11-29 05:17:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156529 states to 156529 states and 268763 transitions. [2023-11-29 05:17:02,872 INFO L78 Accepts]: Start accepts. Automaton has 156529 states and 268763 transitions. Word has length 751 [2023-11-29 05:17:02,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:02,873 INFO L495 AbstractCegarLoop]: Abstraction has 156529 states and 268763 transitions. [2023-11-29 05:17:02,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:17:02,873 INFO L276 IsEmpty]: Start isEmpty. Operand 156529 states and 268763 transitions. [2023-11-29 05:17:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-11-29 05:17:02,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:02,934 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:02,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 05:17:03,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:03,134 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:03,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1055866941, now seen corresponding path program 1 times [2023-11-29 05:17:03,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:03,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332664956] [2023-11-29 05:17:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:03,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:03,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:17:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397754260] [2023-11-29 05:17:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:03,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:03,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:17:03,203 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:17:03,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:17:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:03,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:17:03,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:17:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:17:03,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:17:03,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332664956] [2023-11-29 05:17:03,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:17:03,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397754260] [2023-11-29 05:17:03,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397754260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:03,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:17:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390945078] [2023-11-29 05:17:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:17:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:17:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:17:03,734 INFO L87 Difference]: Start difference. First operand 156529 states and 268763 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:17:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:17:22,787 INFO L93 Difference]: Finished difference Result 466453 states and 801301 transitions. [2023-11-29 05:17:22,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:17:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 752 [2023-11-29 05:17:22,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:17:23,627 INFO L225 Difference]: With dead ends: 466453 [2023-11-29 05:17:23,628 INFO L226 Difference]: Without dead ends: 310051 [2023-11-29 05:17:23,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:17:23,779 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 555 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:17:23,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1311 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:17:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310051 states. [2023-11-29 05:17:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310051 to 310049. [2023-11-29 05:17:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310049 states, 263927 states have (on average 1.6813702273734783) internal successors, (443759), 264680 states have internal predecessors, (443759), 43908 states have call successors, (43908), 2213 states have call predecessors, (43908), 2213 states have return successors, (43908), 43155 states have call predecessors, (43908), 43908 states have call successors, (43908) [2023-11-29 05:17:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310049 states to 310049 states and 531575 transitions. [2023-11-29 05:17:49,616 INFO L78 Accepts]: Start accepts. Automaton has 310049 states and 531575 transitions. Word has length 752 [2023-11-29 05:17:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:17:49,616 INFO L495 AbstractCegarLoop]: Abstraction has 310049 states and 531575 transitions. [2023-11-29 05:17:49,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:17:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 310049 states and 531575 transitions. [2023-11-29 05:17:49,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-29 05:17:49,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:17:49,735 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:17:49,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:17:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:49,936 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:17:49,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:17:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -748753360, now seen corresponding path program 1 times [2023-11-29 05:17:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:17:49,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969159299] [2023-11-29 05:17:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:49,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:17:49,997 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:17:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1195163416] [2023-11-29 05:17:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:17:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:17:49,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:17:49,999 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:17:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:17:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:17:50,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:17:50,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:17:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27612 trivial. 0 not checked. [2023-11-29 05:17:50,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:17:50,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:17:50,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969159299] [2023-11-29 05:17:50,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:17:50,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195163416] [2023-11-29 05:17:50,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195163416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:17:50,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:17:50,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 05:17:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785356132] [2023-11-29 05:17:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:17:50,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:17:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:17:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:17:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:17:50,605 INFO L87 Difference]: Start difference. First operand 310049 states and 531575 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:18:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:18:32,350 INFO L93 Difference]: Finished difference Result 924137 states and 1593571 transitions. [2023-11-29 05:18:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:18:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) Word has length 753 [2023-11-29 05:18:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:18:33,776 INFO L225 Difference]: With dead ends: 924137 [2023-11-29 05:18:33,776 INFO L226 Difference]: Without dead ends: 614215 [2023-11-29 05:18:34,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:18:34,144 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1889 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:18:34,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 3659 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:18:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614215 states. [2023-11-29 05:19:09,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614215 to 385471. [2023-11-29 05:19:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385471 states, 327597 states have (on average 1.6807510447287368) internal successors, (550609), 328546 states have internal predecessors, (550609), 55088 states have call successors, (55088), 2785 states have call predecessors, (55088), 2785 states have return successors, (55088), 54139 states have call predecessors, (55088), 55088 states have call successors, (55088) [2023-11-29 05:19:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385471 states to 385471 states and 660785 transitions. [2023-11-29 05:19:11,652 INFO L78 Accepts]: Start accepts. Automaton has 385471 states and 660785 transitions. Word has length 753 [2023-11-29 05:19:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:19:11,653 INFO L495 AbstractCegarLoop]: Abstraction has 385471 states and 660785 transitions. [2023-11-29 05:19:11,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (118), 1 states have call predecessors, (118), 1 states have return successors, (118), 1 states have call predecessors, (118), 1 states have call successors, (118) [2023-11-29 05:19:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 385471 states and 660785 transitions. [2023-11-29 05:19:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-29 05:19:11,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:19:11,798 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:19:11,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:19:11,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:11,999 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:19:11,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:19:12,000 INFO L85 PathProgramCache]: Analyzing trace with hash 754417377, now seen corresponding path program 1 times [2023-11-29 05:19:12,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:19:12,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527032764] [2023-11-29 05:19:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:12,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:19:12,093 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:19:12,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313748470] [2023-11-29 05:19:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:19:12,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:19:12,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:19:12,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:19:12,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:19:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:19:12,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:19:12,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:19:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 1713 proven. 9 refuted. 0 times theorem prover too weak. 25890 trivial. 0 not checked. [2023-11-29 05:19:12,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:19:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 342 proven. 9 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-11-29 05:19:13,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:19:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527032764] [2023-11-29 05:19:13,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:19:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313748470] [2023-11-29 05:19:13,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313748470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:19:13,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:19:13,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 05:19:13,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19448616] [2023-11-29 05:19:13,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:19:13,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:19:13,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:19:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:19:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:19:13,158 INFO L87 Difference]: Start difference. First operand 385471 states and 660785 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-29 05:19:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:19:45,659 INFO L93 Difference]: Finished difference Result 775095 states and 1325620 transitions. [2023-11-29 05:19:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:19:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 753 [2023-11-29 05:19:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:19:46,541 INFO L225 Difference]: With dead ends: 775095 [2023-11-29 05:19:46,541 INFO L226 Difference]: Without dead ends: 389751 [2023-11-29 05:19:46,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1497 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:19:46,938 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 922 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:19:46,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1162 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:19:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389751 states. [2023-11-29 05:20:20,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389751 to 385631. [2023-11-29 05:20:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385631 states, 327717 states have (on average 1.6745942383214787) internal successors, (548793), 328666 states have internal predecessors, (548793), 55088 states have call successors, (55088), 2825 states have call predecessors, (55088), 2825 states have return successors, (55088), 54139 states have call predecessors, (55088), 55088 states have call successors, (55088) [2023-11-29 05:20:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385631 states to 385631 states and 658969 transitions. [2023-11-29 05:20:22,120 INFO L78 Accepts]: Start accepts. Automaton has 385631 states and 658969 transitions. Word has length 753 [2023-11-29 05:20:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:20:22,121 INFO L495 AbstractCegarLoop]: Abstraction has 385631 states and 658969 transitions. [2023-11-29 05:20:22,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 2 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2023-11-29 05:20:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 385631 states and 658969 transitions. [2023-11-29 05:20:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-29 05:20:22,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:20:22,614 INFO L195 NwaCegarLoop]: trace histogram [118, 118, 118, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:22,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:20:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:22,814 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:20:22,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:20:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1239727329, now seen corresponding path program 1 times [2023-11-29 05:20:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:20:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349298134] [2023-11-29 05:20:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:20:22,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:20:22,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424273915] [2023-11-29 05:20:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:20:22,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:20:22,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:20:22,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:20:22,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_905b3d41-106c-45f1-a183-06edcec75355/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:20:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:20:23,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 1714 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:20:23,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:20:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 9633 proven. 273 refuted. 0 times theorem prover too weak. 17706 trivial. 0 not checked. [2023-11-29 05:20:23,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:20:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 27612 backedges. 78 proven. 273 refuted. 0 times theorem prover too weak. 27261 trivial. 0 not checked. [2023-11-29 05:20:24,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:20:24,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349298134] [2023-11-29 05:20:24,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:20:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424273915] [2023-11-29 05:20:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424273915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:20:24,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:20:24,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 05:20:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010022372] [2023-11-29 05:20:24,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:20:24,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:20:24,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:20:24,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:20:24,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:20:24,462 INFO L87 Difference]: Start difference. First operand 385631 states and 658969 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 2 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) [2023-11-29 05:20:57,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:20:57,410 INFO L93 Difference]: Finished difference Result 781045 states and 1326693 transitions. [2023-11-29 05:20:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:20:57,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 2 states have call successors, (209), 2 states have call predecessors, (209), 4 states have return successors, (210), 2 states have call predecessors, (210), 2 states have call successors, (210) Word has length 753 [2023-11-29 05:20:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:20:58,233 INFO L225 Difference]: With dead ends: 781045 [2023-11-29 05:20:58,233 INFO L226 Difference]: Without dead ends: 395541 [2023-11-29 05:20:58,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1512 GetRequests, 1497 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:20:58,536 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 795 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:20:58,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1164 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:20:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395541 states.