./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/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_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/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_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/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 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:42:19,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:42:19,495 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:42:19,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:42:19,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:42:19,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:42:19,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:42:19,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:42:19,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:42:19,524 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:42:19,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:42:19,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:42:19,526 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:42:19,526 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:42:19,527 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:42:19,527 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:42:19,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:42:19,528 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:42:19,528 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:42:19,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:42:19,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:42:19,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:42:19,530 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:42:19,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:42:19,531 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:42:19,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:42:19,532 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:42:19,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:42:19,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:42:19,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:42:19,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:42:19,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:42:19,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:42:19,534 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:42:19,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:42:19,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:42:19,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:42:19,535 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:42:19,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:42:19,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:42:19,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:42:19,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:42:19,536 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_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d1c02b3372a206bee55669628072c3bed3eaa07fdec8b30d7cf878b8d085487 [2023-11-29 03:42:19,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:42:19,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:42:19,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:42:19,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:42:19,806 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:42:19,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2023-11-29 03:42:22,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:42:22,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:42:22,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i [2023-11-29 03:42:22,760 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/data/15a025d76/e28f69608e16459b868e9e877e1b35a5/FLAGff8c2611a [2023-11-29 03:42:22,774 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/data/15a025d76/e28f69608e16459b868e9e877e1b35a5 [2023-11-29 03:42:22,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:42:22,778 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:42:22,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:42:22,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:42:22,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:42:22,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:42:22" (1/1) ... [2023-11-29 03:42:22,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb0a72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:22, skipping insertion in model container [2023-11-29 03:42:22,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:42:22" (1/1) ... [2023-11-29 03:42:22,815 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:42:22,949 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_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i[915,928] [2023-11-29 03:42:23,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:42:23,016 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:42:23,028 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_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-81.i[915,928] [2023-11-29 03:42:23,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:42:23,073 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:42:23,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23 WrapperNode [2023-11-29 03:42:23,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:42:23,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:42:23,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:42:23,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:42:23,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,093 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,135 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2023-11-29 03:42:23,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:42:23,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:42:23,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:42:23,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:42:23,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,170 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 03:42:23,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:42:23,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:42:23,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:42:23,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:42:23,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (1/1) ... [2023-11-29 03:42:23,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:42:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:23,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:42:23,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:42:23,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:42:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:42:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:42:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:42:23,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:42:23,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:42:23,349 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:42:23,350 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:42:23,668 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:42:23,712 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:42:23,713 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:42:23,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:42:23 BoogieIcfgContainer [2023-11-29 03:42:23,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:42:23,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:42:23,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:42:23,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:42:23,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:42:22" (1/3) ... [2023-11-29 03:42:23,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f430d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:42:23, skipping insertion in model container [2023-11-29 03:42:23,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:42:23" (2/3) ... [2023-11-29 03:42:23,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f430d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:42:23, skipping insertion in model container [2023-11-29 03:42:23,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:42:23" (3/3) ... [2023-11-29 03:42:23,721 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-81.i [2023-11-29 03:42:23,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:42:23,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:42:23,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:42:23,797 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;@4ab527d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:42:23,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:42:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 40 states have (on average 1.45) internal successors, (58), 41 states have internal predecessors, (58), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 03:42:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 03:42:23,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:23,817 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:23,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:23,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1769379133, now seen corresponding path program 1 times [2023-11-29 03:42:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242930857] [2023-11-29 03:42:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:23,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:23,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323281564] [2023-11-29 03:42:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:23,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:23,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:24,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:42:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:24,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:42:24,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2023-11-29 03:42:24,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 24 proven. 51 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 03:42:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242930857] [2023-11-29 03:42:24,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323281564] [2023-11-29 03:42:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323281564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:24,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:24,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 03:42:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155692169] [2023-11-29 03:42:24,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:24,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:42:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:42:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:42:24,822 INFO L87 Difference]: Start difference. First operand has 69 states, 40 states have (on average 1.45) internal successors, (58), 41 states have internal predecessors, (58), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-29 03:42:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:25,562 INFO L93 Difference]: Finished difference Result 200 states and 372 transitions. [2023-11-29 03:42:25,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:42:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 159 [2023-11-29 03:42:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:25,574 INFO L225 Difference]: With dead ends: 200 [2023-11-29 03:42:25,574 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 03:42:25,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:42:25,581 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 133 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:25,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 540 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:42:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 03:42:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 71. [2023-11-29 03:42:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 03:42:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 107 transitions. [2023-11-29 03:42:25,634 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 107 transitions. Word has length 159 [2023-11-29 03:42:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:25,636 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 107 transitions. [2023-11-29 03:42:25,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2023-11-29 03:42:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 107 transitions. [2023-11-29 03:42:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 03:42:25,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:25,641 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:25,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:42:25,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:42:25,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:25,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 715683790, now seen corresponding path program 1 times [2023-11-29 03:42:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014978726] [2023-11-29 03:42:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:25,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:25,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730214931] [2023-11-29 03:42:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:25,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:25,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:25,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:25,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:42:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:26,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:42:26,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 610 proven. 117 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-11-29 03:42:26,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2023-11-29 03:42:27,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014978726] [2023-11-29 03:42:27,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:27,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730214931] [2023-11-29 03:42:27,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730214931] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:27,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 03:42:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911595108] [2023-11-29 03:42:27,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:27,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:42:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:42:27,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:42:27,044 INFO L87 Difference]: Start difference. First operand 71 states and 107 transitions. Second operand has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 03:42:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:27,846 INFO L93 Difference]: Finished difference Result 242 states and 339 transitions. [2023-11-29 03:42:27,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:42:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) Word has length 160 [2023-11-29 03:42:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:27,850 INFO L225 Difference]: With dead ends: 242 [2023-11-29 03:42:27,850 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 03:42:27,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 03:42:27,853 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 270 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:27,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 246 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:42:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 03:42:27,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2023-11-29 03:42:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 79 states have internal predecessors, (96), 36 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 03:42:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2023-11-29 03:42:27,881 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 160 [2023-11-29 03:42:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:27,882 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2023-11-29 03:42:27,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5) internal successors, (72), 16 states have internal predecessors, (72), 5 states have call successors, (51), 3 states have call predecessors, (51), 7 states have return successors, (52), 4 states have call predecessors, (52), 5 states have call successors, (52) [2023-11-29 03:42:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2023-11-29 03:42:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:42:27,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:27,886 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:27,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:42:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 03:42:28,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:28,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -693560994, now seen corresponding path program 1 times [2023-11-29 03:42:28,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:28,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131778266] [2023-11-29 03:42:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:28,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228404453] [2023-11-29 03:42:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:28,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:28,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:28,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:28,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:42:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:28,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:42:28,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 03:42:28,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 03:42:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131778266] [2023-11-29 03:42:29,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:29,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228404453] [2023-11-29 03:42:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228404453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:42:29,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:42:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2023-11-29 03:42:29,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166193148] [2023-11-29 03:42:29,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:42:29,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:42:29,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:42:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:42:29,530 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:42:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:30,774 INFO L93 Difference]: Finished difference Result 418 states and 571 transitions. [2023-11-29 03:42:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:42:30,775 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 161 [2023-11-29 03:42:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:30,780 INFO L225 Difference]: With dead ends: 418 [2023-11-29 03:42:30,781 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 03:42:30,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=915, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 03:42:30,784 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 649 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:30,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 351 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:42:30,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 03:42:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 235. [2023-11-29 03:42:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 145 states have (on average 1.1655172413793105) internal successors, (169), 147 states have internal predecessors, (169), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:42:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 315 transitions. [2023-11-29 03:42:30,844 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 315 transitions. Word has length 161 [2023-11-29 03:42:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 315 transitions. [2023-11-29 03:42:30,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:42:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 315 transitions. [2023-11-29 03:42:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:42:30,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:30,849 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:30,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:42:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 03:42:31,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:31,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1973424672, now seen corresponding path program 1 times [2023-11-29 03:42:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:31,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060427335] [2023-11-29 03:42:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:31,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:31,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638889995] [2023-11-29 03:42:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:31,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:31,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:31,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:31,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:42:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:31,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:42:31,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 03:42:39,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:42:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:42:47,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:47,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060427335] [2023-11-29 03:42:47,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:47,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638889995] [2023-11-29 03:42:47,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638889995] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:42:47,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:42:47,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2023-11-29 03:42:47,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890441379] [2023-11-29 03:42:47,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:47,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:42:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:42:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:42:47,585 INFO L87 Difference]: Start difference. First operand 235 states and 315 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:49,297 INFO L93 Difference]: Finished difference Result 528 states and 692 transitions. [2023-11-29 03:42:49,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:42:49,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:42:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:49,302 INFO L225 Difference]: With dead ends: 528 [2023-11-29 03:42:49,302 INFO L226 Difference]: Without dead ends: 371 [2023-11-29 03:42:49,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:42:49,304 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 175 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:49,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 416 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:42:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-29 03:42:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 259. [2023-11-29 03:42:49,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 171 states have internal predecessors, (201), 73 states have call successors, (73), 16 states have call predecessors, (73), 16 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:42:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2023-11-29 03:42:49,362 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 161 [2023-11-29 03:42:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:49,363 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2023-11-29 03:42:49,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2023-11-29 03:42:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:42:49,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:49,366 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:49,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:42:49,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:49,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:49,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1272360094, now seen corresponding path program 1 times [2023-11-29 03:42:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859031034] [2023-11-29 03:42:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:49,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:49,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:49,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516699213] [2023-11-29 03:42:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:49,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:49,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:49,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:49,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:42:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:49,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:42:49,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:42:49,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859031034] [2023-11-29 03:42:49,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516699213] [2023-11-29 03:42:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516699213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:49,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:49,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:42:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245890545] [2023-11-29 03:42:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:42:49,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:42:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:42:49,715 INFO L87 Difference]: Start difference. First operand 259 states and 347 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:49,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:49,800 INFO L93 Difference]: Finished difference Result 525 states and 685 transitions. [2023-11-29 03:42:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:42:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:42:49,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:49,804 INFO L225 Difference]: With dead ends: 525 [2023-11-29 03:42:49,804 INFO L226 Difference]: Without dead ends: 351 [2023-11-29 03:42:49,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 03:42:49,806 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 26 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:49,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 196 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:42:49,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-29 03:42:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 346. [2023-11-29 03:42:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 237 states have (on average 1.1687763713080168) internal successors, (277), 242 states have internal predecessors, (277), 85 states have call successors, (85), 23 states have call predecessors, (85), 23 states have return successors, (85), 80 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 03:42:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 447 transitions. [2023-11-29 03:42:49,873 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 447 transitions. Word has length 161 [2023-11-29 03:42:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:49,873 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 447 transitions. [2023-11-29 03:42:49,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:49,874 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 447 transitions. [2023-11-29 03:42:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:42:49,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:49,876 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:49,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:42:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:50,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:50,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1329618396, now seen corresponding path program 1 times [2023-11-29 03:42:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:50,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80995228] [2023-11-29 03:42:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:50,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784585073] [2023-11-29 03:42:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:50,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:50,106 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:50,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:42:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:50,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:42:50,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:42:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:42:50,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:42:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:42:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80995228] [2023-11-29 03:42:50,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:42:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784585073] [2023-11-29 03:42:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784585073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:42:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:42:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:42:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98387823] [2023-11-29 03:42:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:42:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:42:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:42:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:42:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:42:50,215 INFO L87 Difference]: Start difference. First operand 346 states and 447 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:42:50,417 INFO L93 Difference]: Finished difference Result 602 states and 769 transitions. [2023-11-29 03:42:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:42:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:42:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:42:50,420 INFO L225 Difference]: With dead ends: 602 [2023-11-29 03:42:50,420 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 03:42:50,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 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 03:42:50,422 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 65 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:42:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:42:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 03:42:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 293. [2023-11-29 03:42:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 199 states have (on average 1.1407035175879396) internal successors, (227), 201 states have internal predecessors, (227), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:42:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 373 transitions. [2023-11-29 03:42:50,467 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 373 transitions. Word has length 161 [2023-11-29 03:42:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:42:50,467 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 373 transitions. [2023-11-29 03:42:50,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:42:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 373 transitions. [2023-11-29 03:42:50,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:42:50,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:42:50,469 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:42:50,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:42:50,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:50,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:42:50,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:42:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1715259234, now seen corresponding path program 1 times [2023-11-29 03:42:50,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:42:50,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549977431] [2023-11-29 03:42:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:42:50,686 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:42:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587078641] [2023-11-29 03:42:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:42:50,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:42:50,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:42:50,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:42:50,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:42:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:42:50,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 03:42:50,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 718 proven. 336 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 03:43:20,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:43:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549977431] [2023-11-29 03:43:27,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587078641] [2023-11-29 03:43:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587078641] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:27,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:43:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [40] total 47 [2023-11-29 03:43:27,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429715457] [2023-11-29 03:43:27,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:27,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:43:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:43:27,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=1703, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 03:43:27,711 INFO L87 Difference]: Start difference. First operand 293 states and 373 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:29,030 INFO L93 Difference]: Finished difference Result 563 states and 701 transitions. [2023-11-29 03:43:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:43:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:43:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:29,032 INFO L225 Difference]: With dead ends: 563 [2023-11-29 03:43:29,033 INFO L226 Difference]: Without dead ends: 371 [2023-11-29 03:43:29,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=501, Invalid=2151, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:43:29,035 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 150 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:29,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 300 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:43:29,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-29 03:43:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 293. [2023-11-29 03:43:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 199 states have (on average 1.1407035175879396) internal successors, (227), 201 states have internal predecessors, (227), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:43:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 373 transitions. [2023-11-29 03:43:29,082 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 373 transitions. Word has length 161 [2023-11-29 03:43:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:29,082 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 373 transitions. [2023-11-29 03:43:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 373 transitions. [2023-11-29 03:43:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:43:29,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:29,084 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:29,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:43:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:29,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:29,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1734736610, now seen corresponding path program 1 times [2023-11-29 03:43:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:29,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166700954] [2023-11-29 03:43:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:29,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:29,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095827599] [2023-11-29 03:43:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:29,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:29,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:29,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:29,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:43:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:29,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:43:29,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 03:43:30,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 03:43:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166700954] [2023-11-29 03:43:30,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095827599] [2023-11-29 03:43:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095827599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:43:30,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:43:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-29 03:43:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102696717] [2023-11-29 03:43:30,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:43:30,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:43:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:43:30,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:43:30,761 INFO L87 Difference]: Start difference. First operand 293 states and 373 transitions. Second operand has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:43:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:31,895 INFO L93 Difference]: Finished difference Result 558 states and 700 transitions. [2023-11-29 03:43:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:43:31,896 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 161 [2023-11-29 03:43:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:31,899 INFO L225 Difference]: With dead ends: 558 [2023-11-29 03:43:31,899 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 03:43:31,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:43:31,900 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 382 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:31,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 419 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:43:31,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 03:43:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 294. [2023-11-29 03:43:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 200 states have (on average 1.125) internal successors, (225), 202 states have internal predecessors, (225), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:43:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 371 transitions. [2023-11-29 03:43:31,948 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 371 transitions. Word has length 161 [2023-11-29 03:43:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:31,948 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 371 transitions. [2023-11-29 03:43:31,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 18 states have internal predecessors, (62), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:43:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 371 transitions. [2023-11-29 03:43:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:43:31,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:31,950 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:31,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:43:32,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:32,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1777355517, now seen corresponding path program 1 times [2023-11-29 03:43:32,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:32,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138568133] [2023-11-29 03:43:32,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:32,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:32,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:32,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160919927] [2023-11-29 03:43:32,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:32,171 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:32,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:43:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:32,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:43:32,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:43:32,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:43:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138568133] [2023-11-29 03:43:32,282 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160919927] [2023-11-29 03:43:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160919927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:43:32,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:43:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:43:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379541624] [2023-11-29 03:43:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:43:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:32,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:43:32,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:43:32,284 INFO L87 Difference]: Start difference. First operand 294 states and 371 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:32,412 INFO L93 Difference]: Finished difference Result 490 states and 617 transitions. [2023-11-29 03:43:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:43:32,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:43:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:32,414 INFO L225 Difference]: With dead ends: 490 [2023-11-29 03:43:32,414 INFO L226 Difference]: Without dead ends: 338 [2023-11-29 03:43:32,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 158 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 03:43:32,416 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 53 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:32,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 257 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:43:32,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-29 03:43:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 290. [2023-11-29 03:43:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 196 states have (on average 1.1173469387755102) internal successors, (219), 198 states have internal predecessors, (219), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:43:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 365 transitions. [2023-11-29 03:43:32,464 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 365 transitions. Word has length 161 [2023-11-29 03:43:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:32,464 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 365 transitions. [2023-11-29 03:43:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 365 transitions. [2023-11-29 03:43:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:43:32,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:32,466 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:32,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:43:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:32,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:32,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1327070205, now seen corresponding path program 1 times [2023-11-29 03:43:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:32,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840307280] [2023-11-29 03:43:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:32,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292367243] [2023-11-29 03:43:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:32,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:32,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:32,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:32,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:43:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:32,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:43:32,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 577 proven. 183 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-29 03:43:35,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:43:41,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840307280] [2023-11-29 03:43:41,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292367243] [2023-11-29 03:43:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292367243] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:43:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-11-29 03:43:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829367174] [2023-11-29 03:43:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:43:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:43:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:43:41,060 INFO L87 Difference]: Start difference. First operand 290 states and 365 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:42,693 INFO L93 Difference]: Finished difference Result 477 states and 601 transitions. [2023-11-29 03:43:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:43:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:43:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:42,695 INFO L225 Difference]: With dead ends: 477 [2023-11-29 03:43:42,695 INFO L226 Difference]: Without dead ends: 329 [2023-11-29 03:43:42,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:43:42,697 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 199 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:42,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 337 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:43:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-29 03:43:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 298. [2023-11-29 03:43:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 204 states have (on average 1.1225490196078431) internal successors, (229), 206 states have internal predecessors, (229), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:43:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 375 transitions. [2023-11-29 03:43:42,746 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 375 transitions. Word has length 161 [2023-11-29 03:43:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:42,746 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 375 transitions. [2023-11-29 03:43:42,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 375 transitions. [2023-11-29 03:43:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 03:43:42,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:42,748 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:42,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 03:43:42,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:43:42,950 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:42,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2028134783, now seen corresponding path program 1 times [2023-11-29 03:43:42,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:42,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436295096] [2023-11-29 03:43:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:42,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:42,970 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:42,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714992320] [2023-11-29 03:43:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:42,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:42,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:42,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:42,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:43:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:43,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 03:43:43,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:43:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 577 proven. 183 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-11-29 03:43:45,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:43:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:43:53,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:43:53,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436295096] [2023-11-29 03:43:53,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:43:53,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714992320] [2023-11-29 03:43:53,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714992320] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:43:53,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:43:53,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 26 [2023-11-29 03:43:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998708794] [2023-11-29 03:43:53,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:43:53,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:43:53,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:43:53,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:43:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:43:53,027 INFO L87 Difference]: Start difference. First operand 298 states and 375 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:43:54,550 INFO L93 Difference]: Finished difference Result 485 states and 610 transitions. [2023-11-29 03:43:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:43:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 161 [2023-11-29 03:43:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:43:54,553 INFO L225 Difference]: With dead ends: 485 [2023-11-29 03:43:54,553 INFO L226 Difference]: Without dead ends: 329 [2023-11-29 03:43:54,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=269, Invalid=921, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:43:54,555 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 152 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:43:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 439 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:43:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-29 03:43:54,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 298. [2023-11-29 03:43:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 204 states have (on average 1.1225490196078431) internal successors, (229), 206 states have internal predecessors, (229), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:43:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 375 transitions. [2023-11-29 03:43:54,624 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 375 transitions. Word has length 161 [2023-11-29 03:43:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:43:54,624 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 375 transitions. [2023-11-29 03:43:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:43:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 375 transitions. [2023-11-29 03:43:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 03:43:54,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:43:54,626 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:43:54,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:43:54,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 03:43:54,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:43:54,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:43:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1497669549, now seen corresponding path program 1 times [2023-11-29 03:43:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:43:54,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624499538] [2023-11-29 03:43:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:43:54,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:43:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714270657] [2023-11-29 03:43:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:43:54,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:43:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:43:54,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:43:54,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:43:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:43:55,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 03:43:55,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 03:44:04,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:44:09,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624499538] [2023-11-29 03:44:09,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:44:09,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714270657] [2023-11-29 03:44:09,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714270657] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:44:09,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:44:09,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 03:44:09,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104630997] [2023-11-29 03:44:09,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:09,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:44:09,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:44:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:44:09,836 INFO L87 Difference]: Start difference. First operand 298 states and 375 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:44:11,585 INFO L93 Difference]: Finished difference Result 517 states and 645 transitions. [2023-11-29 03:44:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:44:11,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 162 [2023-11-29 03:44:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:44:11,587 INFO L225 Difference]: With dead ends: 517 [2023-11-29 03:44:11,587 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 03:44:11,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:44:11,589 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 136 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:44:11,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 572 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:44:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 03:44:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 304. [2023-11-29 03:44:11,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 210 states have (on average 1.1238095238095238) internal successors, (236), 212 states have internal predecessors, (236), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:44:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 382 transitions. [2023-11-29 03:44:11,639 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 382 transitions. Word has length 162 [2023-11-29 03:44:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:44:11,639 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 382 transitions. [2023-11-29 03:44:11,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 382 transitions. [2023-11-29 03:44:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 03:44:11,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:44:11,641 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:44:11,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:44:11,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:44:11,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:44:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1239504111, now seen corresponding path program 1 times [2023-11-29 03:44:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:11,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447471939] [2023-11-29 03:44:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:11,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:11,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:44:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964761758] [2023-11-29 03:44:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:11,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:44:11,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:44:11,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:44:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:11,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:44:11,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 03:44:21,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:44:26,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447471939] [2023-11-29 03:44:26,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:44:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964761758] [2023-11-29 03:44:26,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964761758] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:44:26,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:44:26,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 23 [2023-11-29 03:44:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831930171] [2023-11-29 03:44:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:26,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:44:26,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:44:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:44:26,526 INFO L87 Difference]: Start difference. First operand 304 states and 382 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:44:27,769 INFO L93 Difference]: Finished difference Result 523 states and 651 transitions. [2023-11-29 03:44:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:44:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 162 [2023-11-29 03:44:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:44:27,771 INFO L225 Difference]: With dead ends: 523 [2023-11-29 03:44:27,771 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 03:44:27,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:44:27,773 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 139 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:44:27,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 520 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:44:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 03:44:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 301. [2023-11-29 03:44:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 207 states have (on average 1.1207729468599035) internal successors, (232), 209 states have internal predecessors, (232), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:44:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 378 transitions. [2023-11-29 03:44:27,834 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 378 transitions. Word has length 162 [2023-11-29 03:44:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:44:27,834 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 378 transitions. [2023-11-29 03:44:27,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 378 transitions. [2023-11-29 03:44:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 03:44:27,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:44:27,835 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:44:27,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:44:28,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:28,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:44:28,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:28,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1120407471, now seen corresponding path program 1 times [2023-11-29 03:44:28,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:28,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802325571] [2023-11-29 03:44:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:28,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:28,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:44:28,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839317361] [2023-11-29 03:44:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:44:28,053 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:44:28,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:44:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:28,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:44:28,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 03:44:36,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:44:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802325571] [2023-11-29 03:44:42,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:44:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839317361] [2023-11-29 03:44:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839317361] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:44:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:44:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 20 [2023-11-29 03:44:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998473523] [2023-11-29 03:44:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:44:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:44:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:44:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:44:42,971 INFO L87 Difference]: Start difference. First operand 301 states and 378 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:44:43,629 INFO L93 Difference]: Finished difference Result 588 states and 727 transitions. [2023-11-29 03:44:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:44:43,629 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 162 [2023-11-29 03:44:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:44:43,631 INFO L225 Difference]: With dead ends: 588 [2023-11-29 03:44:43,632 INFO L226 Difference]: Without dead ends: 389 [2023-11-29 03:44:43,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:44:43,633 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 118 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:44:43,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 370 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:44:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-29 03:44:43,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 304. [2023-11-29 03:44:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 210 states have (on average 1.1333333333333333) internal successors, (238), 212 states have internal predecessors, (238), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:44:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 384 transitions. [2023-11-29 03:44:43,707 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 384 transitions. Word has length 162 [2023-11-29 03:44:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:44:43,707 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 384 transitions. [2023-11-29 03:44:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:44:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 384 transitions. [2023-11-29 03:44:43,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 03:44:43,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:44:43,709 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:44:43,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:44:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:43,910 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:44:43,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash -476601195, now seen corresponding path program 1 times [2023-11-29 03:44:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570690484] [2023-11-29 03:44:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:43,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:44:43,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736731449] [2023-11-29 03:44:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:43,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:44:43,928 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:44:43,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:44:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:44,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:44:44,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-11-29 03:44:44,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:44:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-11-29 03:44:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:44:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570690484] [2023-11-29 03:44:44,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:44:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736731449] [2023-11-29 03:44:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736731449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:44:44,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:44:44,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2023-11-29 03:44:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665634064] [2023-11-29 03:44:44,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:44:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:44:44,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:44:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:44:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:44:44,647 INFO L87 Difference]: Start difference. First operand 304 states and 384 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:44:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:44:45,571 INFO L93 Difference]: Finished difference Result 599 states and 740 transitions. [2023-11-29 03:44:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:44:45,572 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 162 [2023-11-29 03:44:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:44:45,575 INFO L225 Difference]: With dead ends: 599 [2023-11-29 03:44:45,575 INFO L226 Difference]: Without dead ends: 388 [2023-11-29 03:44:45,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:44:45,577 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 264 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:44:45,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 453 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:44:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-29 03:44:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 298. [2023-11-29 03:44:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:44:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 376 transitions. [2023-11-29 03:44:45,656 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 376 transitions. Word has length 162 [2023-11-29 03:44:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:44:45,656 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 376 transitions. [2023-11-29 03:44:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) [2023-11-29 03:44:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 376 transitions. [2023-11-29 03:44:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-29 03:44:45,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:44:45,658 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:44:45,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:44:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:44:45,859 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:44:45,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:44:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash -862242033, now seen corresponding path program 1 times [2023-11-29 03:44:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:44:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312785376] [2023-11-29 03:44:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:44:45,875 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:44:45,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1117272399] [2023-11-29 03:44:45,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:44:45,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:44:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:44:45,877 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:44:45,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:44:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:44:46,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:44:46,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:44:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 52 proven. 144 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 03:44:59,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:45:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:45:05,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:45:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312785376] [2023-11-29 03:45:05,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:45:05,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117272399] [2023-11-29 03:45:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117272399] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:45:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:45:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-11-29 03:45:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022384254] [2023-11-29 03:45:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:45:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:45:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:45:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:45:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:45:05,941 INFO L87 Difference]: Start difference. First operand 298 states and 376 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:45:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:45:06,559 INFO L93 Difference]: Finished difference Result 561 states and 696 transitions. [2023-11-29 03:45:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:45:06,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 162 [2023-11-29 03:45:06,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:45:06,561 INFO L225 Difference]: With dead ends: 561 [2023-11-29 03:45:06,562 INFO L226 Difference]: Without dead ends: 360 [2023-11-29 03:45:06,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2023-11-29 03:45:06,563 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 140 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:45:06,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 319 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:45:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-11-29 03:45:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 286. [2023-11-29 03:45:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 192 states have (on average 1.125) internal successors, (216), 194 states have internal predecessors, (216), 73 states have call successors, (73), 20 states have call predecessors, (73), 20 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:45:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 362 transitions. [2023-11-29 03:45:06,614 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 362 transitions. Word has length 162 [2023-11-29 03:45:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:45:06,614 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 362 transitions. [2023-11-29 03:45:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:45:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 362 transitions. [2023-11-29 03:45:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 03:45:06,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:45:06,615 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:45:06,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:45:06,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:45:06,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:45:06,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:45:06,816 INFO L85 PathProgramCache]: Analyzing trace with hash -783244350, now seen corresponding path program 1 times [2023-11-29 03:45:06,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:45:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839655060] [2023-11-29 03:45:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:45:06,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:45:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181189552] [2023-11-29 03:45:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:45:06,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:45:06,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:45:06,830 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:45:06,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:45:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:45:06,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:45:06,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:46:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-11-29 03:46:33,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:46:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:46:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839655060] [2023-11-29 03:46:33,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:46:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181189552] [2023-11-29 03:46:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181189552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:46:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:46:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:46:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982224483] [2023-11-29 03:46:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:46:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:46:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:46:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:46:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:46:33,075 INFO L87 Difference]: Start difference. First operand 286 states and 362 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:46:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:46:33,377 INFO L93 Difference]: Finished difference Result 335 states and 413 transitions. [2023-11-29 03:46:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:46:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 163 [2023-11-29 03:46:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:46:33,380 INFO L225 Difference]: With dead ends: 335 [2023-11-29 03:46:33,380 INFO L226 Difference]: Without dead ends: 333 [2023-11-29 03:46:33,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:46:33,380 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 90 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:46:33,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 476 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:46:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-29 03:46:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 300. [2023-11-29 03:46:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 203 states have (on average 1.1182266009852218) internal successors, (227), 205 states have internal predecessors, (227), 73 states have call successors, (73), 23 states have call predecessors, (73), 23 states have return successors, (73), 71 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 03:46:33,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 373 transitions. [2023-11-29 03:46:33,439 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 373 transitions. Word has length 163 [2023-11-29 03:46:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:46:33,440 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 373 transitions. [2023-11-29 03:46:33,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2023-11-29 03:46:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 373 transitions. [2023-11-29 03:46:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 03:46:33,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:46:33,441 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:46:33,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:46:33,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:46:33,642 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:46:33,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:46:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1185463537, now seen corresponding path program 1 times [2023-11-29 03:46:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:46:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816345956] [2023-11-29 03:46:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:46:33,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:46:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962656863] [2023-11-29 03:46:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:46:33,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:46:33,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:46:33,656 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:46:33,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd68d3eb-8f54-4e01-8745-4b2ceab65b27/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:46:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:46:33,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:46:33,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:48:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2023-11-29 03:48:14,497 INFO L327 TraceCheckSpWp]: Computing backward predicates...