./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.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_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/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_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/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_edd7d78c-a07b-4326-879f-0720c30ce82d/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 3a780e8c08e2ad68e979e131bc4f4540ca41356fe45ef323c559a838b7c9745a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:40:51,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:40:51,092 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:40:51,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:40:51,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:40:51,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:40:51,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:40:51,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:40:51,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:40:51,122 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:40:51,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:40:51,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:40:51,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:40:51,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:40:51,125 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:40:51,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:40:51,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:40:51,126 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:40:51,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:40:51,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:40:51,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:40:51,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:40:51,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:40:51,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:40:51,130 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:40:51,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:40:51,131 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:40:51,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:40:51,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:40:51,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:40:51,132 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:40:51,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:40:51,133 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:40:51,134 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:40:51,135 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:40:51,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:40:51,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:40:51,135 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_edd7d78c-a07b-4326-879f-0720c30ce82d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a780e8c08e2ad68e979e131bc4f4540ca41356fe45ef323c559a838b7c9745a [2023-11-29 02:40:51,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:40:51,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:40:51,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:40:51,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:40:51,354 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:40:51,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-11-29 02:40:54,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:40:54,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:40:54,310 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-11-29 02:40:54,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/data/d2fcdf6ad/8400384d26ac403397c993c2b66ffb0f/FLAG639c2524e [2023-11-29 02:40:54,341 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/data/d2fcdf6ad/8400384d26ac403397c993c2b66ffb0f [2023-11-29 02:40:54,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:40:54,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:40:54,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:40:54,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:40:54,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:40:54,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45660011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54, skipping insertion in model container [2023-11-29 02:40:54,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,411 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:40:54,532 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_edd7d78c-a07b-4326-879f-0720c30ce82d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i[915,928] [2023-11-29 02:40:54,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:40:54,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:40:54,737 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_edd7d78c-a07b-4326-879f-0720c30ce82d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-8.i[915,928] [2023-11-29 02:40:54,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:40:54,853 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:40:54,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54 WrapperNode [2023-11-29 02:40:54,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:40:54,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:40:54,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:40:54,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:40:54,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,970 INFO L138 Inliner]: procedures = 26, calls = 147, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 974 [2023-11-29 02:40:54,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:40:54,971 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:40:54,971 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:40:54,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:40:54,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:54,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,070 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 02:40:55,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:40:55,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:40:55,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:40:55,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:40:55,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (1/1) ... [2023-11-29 02:40:55,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:40:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:55,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:40:55,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:40:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:40:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 02:40:55,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 02:40:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:40:55,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:40:55,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:40:55,361 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:40:55,364 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:40:56,457 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:40:56,506 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:40:56,506 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:40:56,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:40:56 BoogieIcfgContainer [2023-11-29 02:40:56,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:40:56,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:40:56,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:40:56,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:40:56,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:40:54" (1/3) ... [2023-11-29 02:40:56,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693c8536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:40:56, skipping insertion in model container [2023-11-29 02:40:56,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:40:54" (2/3) ... [2023-11-29 02:40:56,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693c8536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:40:56, skipping insertion in model container [2023-11-29 02:40:56,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:40:56" (3/3) ... [2023-11-29 02:40:56,515 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-8.i [2023-11-29 02:40:56,534 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:40:56,535 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:40:56,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:40:56,606 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;@32210507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:40:56,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:40:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 376 states, 239 states have (on average 1.6401673640167365) internal successors, (392), 240 states have internal predecessors, (392), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2023-11-29 02:40:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2023-11-29 02:40:56,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:56,666 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:56,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1058633121, now seen corresponding path program 1 times [2023-11-29 02:40:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792241486] [2023-11-29 02:40:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792241486] [2023-11-29 02:40:57,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 02:40:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759396709] [2023-11-29 02:40:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:57,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:40:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:57,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:40:57,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:40:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:57,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 02:40:57,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:40:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 35378 trivial. 0 not checked. [2023-11-29 02:40:57,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:40:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759396709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:40:57,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697286156] [2023-11-29 02:40:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:57,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:40:57,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:57,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:40:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:40:57,836 INFO L87 Difference]: Start difference. First operand has 376 states, 239 states have (on average 1.6401673640167365) internal successors, (392), 240 states have internal predecessors, (392), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) 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, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-29 02:40:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:57,935 INFO L93 Difference]: Finished difference Result 749 states and 1452 transitions. [2023-11-29 02:40:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:40:57,938 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, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) Word has length 828 [2023-11-29 02:40:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:57,951 INFO L225 Difference]: With dead ends: 749 [2023-11-29 02:40:57,951 INFO L226 Difference]: Without dead ends: 374 [2023-11-29 02:40:57,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 827 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 02:40:57,963 INFO L413 NwaCegarLoop]: 648 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, 648 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 02:40:57,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 648 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:40:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-29 02:40:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-11-29 02:40:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 238 states have (on average 1.6092436974789917) internal successors, (383), 238 states have internal predecessors, (383), 134 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2023-11-29 02:40:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 651 transitions. [2023-11-29 02:40:58,076 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 651 transitions. Word has length 828 [2023-11-29 02:40:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:58,077 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 651 transitions. [2023-11-29 02:40:58,077 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, (134), 2 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-29 02:40:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 651 transitions. [2023-11-29 02:40:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2023-11-29 02:40:58,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:58,121 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:58,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:40:58,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 02:40:58,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:58,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -480075712, now seen corresponding path program 1 times [2023-11-29 02:40:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685857276] [2023-11-29 02:40:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:58,496 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:40:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636829360] [2023-11-29 02:40:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:58,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:40:58,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:40:58,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:40:58,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:40:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:58,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:40:58,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:00,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685857276] [2023-11-29 02:41:00,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636829360] [2023-11-29 02:41:00,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636829360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:00,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:00,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609129793] [2023-11-29 02:41:00,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:00,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:41:00,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:41:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:41:00,434 INFO L87 Difference]: Start difference. First operand 374 states and 651 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:01,114 INFO L93 Difference]: Finished difference Result 1312 states and 2294 transitions. [2023-11-29 02:41:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:41:01,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 829 [2023-11-29 02:41:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:01,127 INFO L225 Difference]: With dead ends: 1312 [2023-11-29 02:41:01,127 INFO L226 Difference]: Without dead ends: 939 [2023-11-29 02:41:01,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:41:01,130 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 765 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:01,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1704 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:41:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-11-29 02:41:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 934. [2023-11-29 02:41:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 627 states have (on average 1.6475279106858054) internal successors, (1033), 628 states have internal predecessors, (1033), 303 states have call successors, (303), 3 states have call predecessors, (303), 3 states have return successors, (303), 302 states have call predecessors, (303), 303 states have call successors, (303) [2023-11-29 02:41:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1639 transitions. [2023-11-29 02:41:01,294 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1639 transitions. Word has length 829 [2023-11-29 02:41:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:01,297 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1639 transitions. [2023-11-29 02:41:01,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1639 transitions. [2023-11-29 02:41:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2023-11-29 02:41:01,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:01,307 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:01,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:41:01,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:01,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:01,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash 335354402, now seen corresponding path program 1 times [2023-11-29 02:41:01,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:01,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207742536] [2023-11-29 02:41:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:01,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:01,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317338112] [2023-11-29 02:41:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:01,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:01,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:01,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:41:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:02,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:41:02,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:02,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207742536] [2023-11-29 02:41:02,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317338112] [2023-11-29 02:41:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317338112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809745316] [2023-11-29 02:41:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:02,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:02,216 INFO L87 Difference]: Start difference. First operand 934 states and 1639 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:02,371 INFO L93 Difference]: Finished difference Result 2791 states and 4897 transitions. [2023-11-29 02:41:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:02,372 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 830 [2023-11-29 02:41:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:02,391 INFO L225 Difference]: With dead ends: 2791 [2023-11-29 02:41:02,392 INFO L226 Difference]: Without dead ends: 1858 [2023-11-29 02:41:02,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 828 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 02:41:02,397 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 590 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:02,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1680 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:41:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-11-29 02:41:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1854. [2023-11-29 02:41:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1241 states have (on average 1.6333601933924256) internal successors, (2027), 1243 states have internal predecessors, (2027), 606 states have call successors, (606), 6 states have call predecessors, (606), 6 states have return successors, (606), 604 states have call predecessors, (606), 606 states have call successors, (606) [2023-11-29 02:41:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 3239 transitions. [2023-11-29 02:41:02,817 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 3239 transitions. Word has length 830 [2023-11-29 02:41:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:02,819 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 3239 transitions. [2023-11-29 02:41:02,820 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 3239 transitions. [2023-11-29 02:41:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2023-11-29 02:41:02,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:02,831 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:02,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 02:41:03,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:03,032 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:03,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash 475903012, now seen corresponding path program 1 times [2023-11-29 02:41:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:03,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877508964] [2023-11-29 02:41:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:03,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:03,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:03,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388388990] [2023-11-29 02:41:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:03,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:03,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:03,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:41:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:03,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:41:03,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:03,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:03,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:03,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877508964] [2023-11-29 02:41:03,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:03,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388388990] [2023-11-29 02:41:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388388990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:03,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:03,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:41:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299526471] [2023-11-29 02:41:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:41:03,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:41:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:41:03,722 INFO L87 Difference]: Start difference. First operand 1854 states and 3239 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:03,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:03,908 INFO L93 Difference]: Finished difference Result 3711 states and 6482 transitions. [2023-11-29 02:41:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:41:03,909 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 830 [2023-11-29 02:41:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:03,922 INFO L225 Difference]: With dead ends: 3711 [2023-11-29 02:41:03,923 INFO L226 Difference]: Without dead ends: 1858 [2023-11-29 02:41:03,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 827 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 02:41:03,929 INFO L413 NwaCegarLoop]: 1120 mSDtfsCounter, 612 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:03,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 2864 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:41:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2023-11-29 02:41:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1854. [2023-11-29 02:41:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1241 states have (on average 1.6309427880741338) internal successors, (2024), 1243 states have internal predecessors, (2024), 606 states have call successors, (606), 6 states have call predecessors, (606), 6 states have return successors, (606), 604 states have call predecessors, (606), 606 states have call successors, (606) [2023-11-29 02:41:04,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 3236 transitions. [2023-11-29 02:41:04,280 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 3236 transitions. Word has length 830 [2023-11-29 02:41:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:04,281 INFO L495 AbstractCegarLoop]: Abstraction has 1854 states and 3236 transitions. [2023-11-29 02:41:04,282 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 3236 transitions. [2023-11-29 02:41:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:04,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:04,290 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:04,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:41:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:04,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:04,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1548491772, now seen corresponding path program 1 times [2023-11-29 02:41:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294004004] [2023-11-29 02:41:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:04,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693896407] [2023-11-29 02:41:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:04,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:04,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:04,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:04,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:41:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:05,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:41:05,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:05,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294004004] [2023-11-29 02:41:05,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693896407] [2023-11-29 02:41:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693896407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:05,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:05,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991624959] [2023-11-29 02:41:05,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:05,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:05,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:05,193 INFO L87 Difference]: Start difference. First operand 1854 states and 3236 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:05,386 INFO L93 Difference]: Finished difference Result 4930 states and 8654 transitions. [2023-11-29 02:41:05,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:05,386 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 831 [2023-11-29 02:41:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:05,404 INFO L225 Difference]: With dead ends: 4930 [2023-11-29 02:41:05,404 INFO L226 Difference]: Without dead ends: 3077 [2023-11-29 02:41:05,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 829 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 02:41:05,409 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 321 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:05,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1383 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:41:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2023-11-29 02:41:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 3071. [2023-11-29 02:41:05,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 2218 states have (on average 1.6753832281334535) internal successors, (3716), 2226 states have internal predecessors, (3716), 840 states have call successors, (840), 12 states have call predecessors, (840), 12 states have return successors, (840), 832 states have call predecessors, (840), 840 states have call successors, (840) [2023-11-29 02:41:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 5396 transitions. [2023-11-29 02:41:05,759 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 5396 transitions. Word has length 831 [2023-11-29 02:41:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:05,760 INFO L495 AbstractCegarLoop]: Abstraction has 3071 states and 5396 transitions. [2023-11-29 02:41:05,760 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 5396 transitions. [2023-11-29 02:41:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:05,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:05,790 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:05,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:41:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:05,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:05,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash 140451970, now seen corresponding path program 1 times [2023-11-29 02:41:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:05,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599159245] [2023-11-29 02:41:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:06,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358503727] [2023-11-29 02:41:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:06,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:06,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:06,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:41:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:06,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:41:06,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 6613 proven. 39 refuted. 0 times theorem prover too weak. 28992 trivial. 0 not checked. [2023-11-29 02:41:06,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:41:07,292 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 360 proven. 39 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-11-29 02:41:07,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:07,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599159245] [2023-11-29 02:41:07,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:07,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358503727] [2023-11-29 02:41:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358503727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:41:07,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:41:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:41:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412358102] [2023-11-29 02:41:07,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:41:07,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:07,298 INFO L87 Difference]: Start difference. First operand 3071 states and 5396 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, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 02:41:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:08,353 INFO L93 Difference]: Finished difference Result 6189 states and 10835 transitions. [2023-11-29 02:41:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:41:08,354 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, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) Word has length 831 [2023-11-29 02:41:08,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:08,381 INFO L225 Difference]: With dead ends: 6189 [2023-11-29 02:41:08,381 INFO L226 Difference]: Without dead ends: 3119 [2023-11-29 02:41:08,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1654 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:41:08,393 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 735 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:08,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1250 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:41:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2023-11-29 02:41:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3087. [2023-11-29 02:41:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 2230 states have (on average 1.6609865470852019) internal successors, (3704), 2238 states have internal predecessors, (3704), 840 states have call successors, (840), 16 states have call predecessors, (840), 16 states have return successors, (840), 832 states have call predecessors, (840), 840 states have call successors, (840) [2023-11-29 02:41:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 5384 transitions. [2023-11-29 02:41:08,892 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 5384 transitions. Word has length 831 [2023-11-29 02:41:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:08,893 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 5384 transitions. [2023-11-29 02:41:08,893 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, (147), 2 states have call predecessors, (147), 4 states have return successors, (148), 2 states have call predecessors, (148), 2 states have call successors, (148) [2023-11-29 02:41:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 5384 transitions. [2023-11-29 02:41:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:08,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:08,905 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:08,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:41:09,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:09,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:09,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:09,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1664986364, now seen corresponding path program 1 times [2023-11-29 02:41:09,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463723923] [2023-11-29 02:41:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:09,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813219330] [2023-11-29 02:41:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:09,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:09,204 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:09,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:41:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:09,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:41:09,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 5745 proven. 33 refuted. 0 times theorem prover too weak. 29866 trivial. 0 not checked. [2023-11-29 02:41:09,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:41:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 366 proven. 33 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-11-29 02:41:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463723923] [2023-11-29 02:41:10,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813219330] [2023-11-29 02:41:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813219330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:41:10,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:41:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:41:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541741316] [2023-11-29 02:41:10,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:41:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:10,328 INFO L87 Difference]: Start difference. First operand 3087 states and 5384 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, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-29 02:41:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:11,228 INFO L93 Difference]: Finished difference Result 6229 states and 10819 transitions. [2023-11-29 02:41:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:41:11,230 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, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 831 [2023-11-29 02:41:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:11,250 INFO L225 Difference]: With dead ends: 6229 [2023-11-29 02:41:11,250 INFO L226 Difference]: Without dead ends: 3143 [2023-11-29 02:41:11,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1654 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 02:41:11,260 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1014 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:11,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1252 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:41:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2023-11-29 02:41:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3103. [2023-11-29 02:41:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 2242 states have (on average 1.6520963425512936) internal successors, (3704), 2250 states have internal predecessors, (3704), 840 states have call successors, (840), 20 states have call predecessors, (840), 20 states have return successors, (840), 832 states have call predecessors, (840), 840 states have call successors, (840) [2023-11-29 02:41:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 5384 transitions. [2023-11-29 02:41:11,647 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 5384 transitions. Word has length 831 [2023-11-29 02:41:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:11,648 INFO L495 AbstractCegarLoop]: Abstraction has 3103 states and 5384 transitions. [2023-11-29 02:41:11,649 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, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-11-29 02:41:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 5384 transitions. [2023-11-29 02:41:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:11,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:11,660 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:11,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:41:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:11,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:11,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1618863682, now seen corresponding path program 1 times [2023-11-29 02:41:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131715003] [2023-11-29 02:41:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:11,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125564424] [2023-11-29 02:41:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:11,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:11,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:11,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:41:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:12,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:41:12,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 7449 proven. 45 refuted. 0 times theorem prover too weak. 28150 trivial. 0 not checked. [2023-11-29 02:41:12,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:41:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 354 proven. 45 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-11-29 02:41:13,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131715003] [2023-11-29 02:41:13,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125564424] [2023-11-29 02:41:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125564424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:41:13,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:41:13,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-11-29 02:41:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74530244] [2023-11-29 02:41:13,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:41:13,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:41:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:41:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:41:13,480 INFO L87 Difference]: Start difference. First operand 3103 states and 5384 transitions. Second operand has 11 states, 11 states have (on average 16.90909090909091) internal successors, (186), 11 states have internal predecessors, (186), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-29 02:41:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:18,437 INFO L93 Difference]: Finished difference Result 13521 states and 22581 transitions. [2023-11-29 02:41:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 02:41:18,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.90909090909091) internal successors, (186), 11 states have internal predecessors, (186), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) Word has length 831 [2023-11-29 02:41:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:18,501 INFO L225 Difference]: With dead ends: 13521 [2023-11-29 02:41:18,501 INFO L226 Difference]: Without dead ends: 10023 [2023-11-29 02:41:18,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1699 GetRequests, 1652 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=477, Invalid=1593, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 02:41:18,512 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1737 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 1440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1440 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:18,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 3525 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1440 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:41:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10023 states. [2023-11-29 02:41:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10023 to 4923. [2023-11-29 02:41:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4923 states, 3274 states have (on average 1.5687232742822237) internal successors, (5136), 3294 states have internal predecessors, (5136), 1612 states have call successors, (1612), 36 states have call predecessors, (1612), 36 states have return successors, (1612), 1592 states have call predecessors, (1612), 1612 states have call successors, (1612) [2023-11-29 02:41:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4923 states to 4923 states and 8360 transitions. [2023-11-29 02:41:19,785 INFO L78 Accepts]: Start accepts. Automaton has 4923 states and 8360 transitions. Word has length 831 [2023-11-29 02:41:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 4923 states and 8360 transitions. [2023-11-29 02:41:19,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.90909090909091) internal successors, (186), 11 states have internal predecessors, (186), 2 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 2 states have call predecessors, (150), 2 states have call successors, (150) [2023-11-29 02:41:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4923 states and 8360 transitions. [2023-11-29 02:41:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:19,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:19,800 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:19,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 02:41:20,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:20,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:20,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1484850176, now seen corresponding path program 1 times [2023-11-29 02:41:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:20,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165676389] [2023-11-29 02:41:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:20,123 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310731549] [2023-11-29 02:41:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:20,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:20,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:41:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:20,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:41:20,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:20,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165676389] [2023-11-29 02:41:20,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310731549] [2023-11-29 02:41:20,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310731549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:20,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:20,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:41:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850561696] [2023-11-29 02:41:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:20,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:41:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:41:20,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:41:20,625 INFO L87 Difference]: Start difference. First operand 4923 states and 8360 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:21,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:21,086 INFO L93 Difference]: Finished difference Result 11559 states and 19802 transitions. [2023-11-29 02:41:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:41:21,087 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 831 [2023-11-29 02:41:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:21,113 INFO L225 Difference]: With dead ends: 11559 [2023-11-29 02:41:21,114 INFO L226 Difference]: Without dead ends: 6637 [2023-11-29 02:41:21,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 829 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 02:41:21,168 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 638 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:21,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1873 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:41:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6637 states. [2023-11-29 02:41:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6637 to 6251. [2023-11-29 02:41:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6251 states, 4518 states have (on average 1.6392208942009738) internal successors, (7406), 4534 states have internal predecessors, (7406), 1680 states have call successors, (1680), 52 states have call predecessors, (1680), 52 states have return successors, (1680), 1664 states have call predecessors, (1680), 1680 states have call successors, (1680) [2023-11-29 02:41:22,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 10766 transitions. [2023-11-29 02:41:22,062 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 10766 transitions. Word has length 831 [2023-11-29 02:41:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:22,063 INFO L495 AbstractCegarLoop]: Abstraction has 6251 states and 10766 transitions. [2023-11-29 02:41:22,063 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, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:41:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 10766 transitions. [2023-11-29 02:41:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:22,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:22,073 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:22,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:41:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:22,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:22,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash 667201726, now seen corresponding path program 1 times [2023-11-29 02:41:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707268599] [2023-11-29 02:41:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:22,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330141101] [2023-11-29 02:41:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:22,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:22,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:22,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:22,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:41:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:22,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 02:41:22,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 17403 proven. 234 refuted. 0 times theorem prover too weak. 18007 trivial. 0 not checked. [2023-11-29 02:41:24,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:41:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 165 proven. 234 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-11-29 02:41:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707268599] [2023-11-29 02:41:29,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330141101] [2023-11-29 02:41:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330141101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:41:29,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:41:29,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 02:41:29,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191380899] [2023-11-29 02:41:29,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:41:29,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 02:41:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:41:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:41:29,539 INFO L87 Difference]: Start difference. First operand 6251 states and 10766 transitions. Second operand has 16 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 4 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 4 states have call predecessors, (268), 4 states have call successors, (268) [2023-11-29 02:41:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:41:46,112 INFO L93 Difference]: Finished difference Result 87827 states and 151280 transitions. [2023-11-29 02:41:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-29 02:41:46,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 4 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 4 states have call predecessors, (268), 4 states have call successors, (268) Word has length 831 [2023-11-29 02:41:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:46,389 INFO L225 Difference]: With dead ends: 87827 [2023-11-29 02:41:46,389 INFO L226 Difference]: Without dead ends: 81577 [2023-11-29 02:41:46,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1716 GetRequests, 1661 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=861, Invalid=2331, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 02:41:46,422 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 7227 mSDsluCounter, 6333 mSDsCounter, 0 mSdLazyCounter, 4975 mSolverCounterSat, 2058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7563 SdHoareTripleChecker+Valid, 6894 SdHoareTripleChecker+Invalid, 7033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2058 IncrementalHoareTripleChecker+Valid, 4975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:46,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7563 Valid, 6894 Invalid, 7033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2058 Valid, 4975 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 02:41:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81577 states. [2023-11-29 02:41:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81577 to 56207. [2023-11-29 02:41:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56207 states, 42026 states have (on average 1.6504544805596535) internal successors, (69362), 42290 states have internal predecessors, (69362), 13768 states have call successors, (13768), 412 states have call predecessors, (13768), 412 states have return successors, (13768), 13504 states have call predecessors, (13768), 13768 states have call successors, (13768) [2023-11-29 02:41:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56207 states to 56207 states and 96898 transitions. [2023-11-29 02:41:55,532 INFO L78 Accepts]: Start accepts. Automaton has 56207 states and 96898 transitions. Word has length 831 [2023-11-29 02:41:55,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:55,534 INFO L495 AbstractCegarLoop]: Abstraction has 56207 states and 96898 transitions. [2023-11-29 02:41:55,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 4 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 4 states have call predecessors, (268), 4 states have call successors, (268) [2023-11-29 02:41:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 56207 states and 96898 transitions. [2023-11-29 02:41:55,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2023-11-29 02:41:55,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:55,568 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:55,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:41:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:41:55,768 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:55,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -230191552, now seen corresponding path program 1 times [2023-11-29 02:41:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275326127] [2023-11-29 02:41:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:55,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:41:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297302355] [2023-11-29 02:41:55,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:55,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:41:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:41:55,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:41:55,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:41:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:56,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:41:56,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:41:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35644 trivial. 0 not checked. [2023-11-29 02:41:57,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:41:57,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:57,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275326127] [2023-11-29 02:41:57,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:41:57,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297302355] [2023-11-29 02:41:57,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297302355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:57,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:57,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:41:57,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591360853] [2023-11-29 02:41:57,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:57,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:41:57,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:41:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:41:57,186 INFO L87 Difference]: Start difference. First operand 56207 states and 96898 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:42:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:42:15,198 INFO L93 Difference]: Finished difference Result 224921 states and 387797 transitions. [2023-11-29 02:42:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:42:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) Word has length 831 [2023-11-29 02:42:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:42:15,566 INFO L225 Difference]: With dead ends: 224921 [2023-11-29 02:42:15,566 INFO L226 Difference]: Without dead ends: 168715 [2023-11-29 02:42:15,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:42:15,672 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 1182 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:42:15,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1962 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:42:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168715 states. [2023-11-29 02:42:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168715 to 168327. [2023-11-29 02:42:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168327 states, 125786 states have (on average 1.6450320385416501) internal successors, (206922), 126578 states have internal predecessors, (206922), 41304 states have call successors, (41304), 1236 states have call predecessors, (41304), 1236 states have return successors, (41304), 40512 states have call predecessors, (41304), 41304 states have call successors, (41304) [2023-11-29 02:42:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168327 states to 168327 states and 289530 transitions. [2023-11-29 02:42:39,040 INFO L78 Accepts]: Start accepts. Automaton has 168327 states and 289530 transitions. Word has length 831 [2023-11-29 02:42:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:42:39,041 INFO L495 AbstractCegarLoop]: Abstraction has 168327 states and 289530 transitions. [2023-11-29 02:42:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (134), 1 states have call predecessors, (134), 1 states have return successors, (134), 1 states have call predecessors, (134), 1 states have call successors, (134) [2023-11-29 02:42:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 168327 states and 289530 transitions. [2023-11-29 02:42:39,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2023-11-29 02:42:39,097 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:42:39,097 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:39,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 02:42:39,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:42:39,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:42:39,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:42:39,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2091067009, now seen corresponding path program 1 times [2023-11-29 02:42:39,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:42:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184357990] [2023-11-29 02:42:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:42:39,382 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:42:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882320742] [2023-11-29 02:42:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:42:39,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:42:39,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:42:39,384 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:42:39,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:42:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:42:39,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:42:39,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:42:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 17715 proven. 222 refuted. 0 times theorem prover too weak. 17707 trivial. 0 not checked. [2023-11-29 02:42:41,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:42:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 177 proven. 222 refuted. 0 times theorem prover too weak. 35245 trivial. 0 not checked. [2023-11-29 02:42:41,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:42:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184357990] [2023-11-29 02:42:41,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:42:41,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882320742] [2023-11-29 02:42:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882320742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:42:41,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:42:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2023-11-29 02:42:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033987071] [2023-11-29 02:42:41,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:42:41,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:42:41,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:42:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:42:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:42:41,878 INFO L87 Difference]: Start difference. First operand 168327 states and 289530 transitions. Second operand has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 3 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 3 states have call predecessors, (268), 3 states have call successors, (268) [2023-11-29 02:43:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:43:18,086 INFO L93 Difference]: Finished difference Result 494599 states and 848700 transitions. [2023-11-29 02:43:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:43:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 3 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 3 states have call predecessors, (268), 3 states have call successors, (268) Word has length 832 [2023-11-29 02:43:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:43:18,914 INFO L225 Difference]: With dead ends: 494599 [2023-11-29 02:43:18,914 INFO L226 Difference]: Without dead ends: 326273 [2023-11-29 02:43:19,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1671 GetRequests, 1653 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:43:19,181 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 1513 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:43:19,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 1758 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:43:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326273 states. [2023-11-29 02:44:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326273 to 321735. [2023-11-29 02:44:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321735 states, 244466 states have (on average 1.6492845630885276) internal successors, (403194), 246122 states have internal predecessors, (403194), 75000 states have call successors, (75000), 2268 states have call predecessors, (75000), 2268 states have return successors, (75000), 73344 states have call predecessors, (75000), 75000 states have call successors, (75000) [2023-11-29 02:44:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321735 states to 321735 states and 553194 transitions. [2023-11-29 02:44:02,349 INFO L78 Accepts]: Start accepts. Automaton has 321735 states and 553194 transitions. Word has length 832 [2023-11-29 02:44:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:44:02,351 INFO L495 AbstractCegarLoop]: Abstraction has 321735 states and 553194 transitions. [2023-11-29 02:44:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 3 states have call successors, (268), 3 states have call predecessors, (268), 5 states have return successors, (268), 3 states have call predecessors, (268), 3 states have call successors, (268) [2023-11-29 02:44:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 321735 states and 553194 transitions. [2023-11-29 02:44:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2023-11-29 02:44:02,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:44:02,699 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:02,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:44:02,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:44:02,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:44:02,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:44:02,900 INFO L85 PathProgramCache]: Analyzing trace with hash 874913283, now seen corresponding path program 1 times [2023-11-29 02:44:02,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:44:02,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066743910] [2023-11-29 02:44:02,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:02,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:44:02,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:44:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503133263] [2023-11-29 02:44:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:44:02,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:44:02,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:44:02,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:44:02,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:44:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:44:03,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 02:44:03,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:44:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 19849 proven. 444 refuted. 0 times theorem prover too weak. 15351 trivial. 0 not checked. [2023-11-29 02:44:10,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:44:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:44:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066743910] [2023-11-29 02:44:18,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:44:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503133263] [2023-11-29 02:44:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503133263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:44:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:44:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-11-29 02:44:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014325753] [2023-11-29 02:44:18,538 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 02:44:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:44:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:44:18,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:44:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 02:44:18,541 INFO L87 Difference]: Start difference. First operand 321735 states and 553194 transitions. Second operand has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 4 states have call successors, (134), 4 states have call predecessors, (134), 6 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-11-29 02:48:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:48:49,105 INFO L93 Difference]: Finished difference Result 1844995 states and 3164864 transitions. [2023-11-29 02:48:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-29 02:48:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 4 states have call successors, (134), 4 states have call predecessors, (134), 6 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 832 [2023-11-29 02:48:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:48:54,338 INFO L225 Difference]: With dead ends: 1844995 [2023-11-29 02:48:54,339 INFO L226 Difference]: Without dead ends: 1523261 [2023-11-29 02:48:55,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4742 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=3034, Invalid=11972, Unknown=0, NotChecked=0, Total=15006 [2023-11-29 02:48:55,167 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 9524 mSDsluCounter, 13209 mSDsCounter, 0 mSdLazyCounter, 12841 mSolverCounterSat, 4026 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9754 SdHoareTripleChecker+Valid, 14638 SdHoareTripleChecker+Invalid, 16867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4026 IncrementalHoareTripleChecker+Valid, 12841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:48:55,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9754 Valid, 14638 Invalid, 16867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4026 Valid, 12841 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2023-11-29 02:48:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523261 states. [2023-11-29 02:52:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523261 to 1149675. [2023-11-29 02:52:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149675 states, 882014 states have (on average 1.6455861244832848) internal successors, (1451430), 887958 states have internal predecessors, (1451430), 259816 states have call successors, (259816), 7844 states have call predecessors, (259816), 7844 states have return successors, (259816), 253872 states have call predecessors, (259816), 259816 states have call successors, (259816) [2023-11-29 02:52:21,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149675 states to 1149675 states and 1971062 transitions. [2023-11-29 02:52:21,720 INFO L78 Accepts]: Start accepts. Automaton has 1149675 states and 1971062 transitions. Word has length 832 [2023-11-29 02:52:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:52:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 1149675 states and 1971062 transitions. [2023-11-29 02:52:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.181818181818182) internal successors, (180), 21 states have internal predecessors, (180), 4 states have call successors, (134), 4 states have call predecessors, (134), 6 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) [2023-11-29 02:52:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1149675 states and 1971062 transitions. [2023-11-29 02:52:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2023-11-29 02:52:22,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:52:22,105 INFO L195 NwaCegarLoop]: trace histogram [134, 134, 134, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:22,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:52:22,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:52:22,306 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:52:22,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:52:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1750932289, now seen corresponding path program 1 times [2023-11-29 02:52:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:52:22,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875605723] [2023-11-29 02:52:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:22,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:52:22,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:52:22,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041317580] [2023-11-29 02:52:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:52:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:52:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:52:22,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:52:22,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd7d78c-a07b-4326-879f-0720c30ce82d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:52:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:52:22,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:52:22,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:52:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 9697 proven. 666 refuted. 0 times theorem prover too weak. 25281 trivial. 0 not checked. [2023-11-29 02:52:27,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:52:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 35644 backedges. 126 proven. 669 refuted. 0 times theorem prover too weak. 34849 trivial. 0 not checked. [2023-11-29 02:52:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:52:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875605723] [2023-11-29 02:52:28,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:52:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041317580] [2023-11-29 02:52:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041317580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:52:28,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:52:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-11-29 02:52:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35382535] [2023-11-29 02:52:28,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:52:28,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 02:52:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:52:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:52:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:52:28,121 INFO L87 Difference]: Start difference. First operand 1149675 states and 1971062 transitions. Second operand has 20 states, 19 states have (on average 17.94736842105263) internal successors, (341), 18 states have internal predecessors, (341), 6 states have call successors, (268), 4 states have call predecessors, (268), 7 states have return successors, (268), 6 states have call predecessors, (268), 6 states have call successors, (268)