./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/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 cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:15:59,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:15:59,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:15:59,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:15:59,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:15:59,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:15:59,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:15:59,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:15:59,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:15:59,698 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:15:59,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:15:59,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:15:59,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:15:59,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:15:59,701 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:15:59,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:15:59,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:15:59,703 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:15:59,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:15:59,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:15:59,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:15:59,705 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:15:59,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:15:59,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:15:59,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:15:59,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:15:59,707 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:15:59,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:15:59,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:15:59,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:15:59,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:15:59,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:15:59,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:15:59,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:15:59,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:15:59,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:15:59,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:15:59,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:15:59,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:15:59,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:15:59,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:15:59,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:15:59,713 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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 [2023-11-29 06:15:59,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:16:00,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:16:00,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:16:00,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:16:00,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:16:00,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2023-11-29 06:16:03,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:16:03,590 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:16:03,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2023-11-29 06:16:03,609 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/data/cd443c0a4/8f6ea4941e244c789a9b024b3c97fdd7/FLAGf99f463eb [2023-11-29 06:16:03,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/data/cd443c0a4/8f6ea4941e244c789a9b024b3c97fdd7 [2023-11-29 06:16:03,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:16:03,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:16:03,633 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:16:03,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:16:03,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:16:03,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:16:03" (1/1) ... [2023-11-29 06:16:03,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ed2c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:03, skipping insertion in model container [2023-11-29 06:16:03,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:16:03" (1/1) ... [2023-11-29 06:16:03,706 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:16:03,886 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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2023-11-29 06:16:04,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:16:04,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:16:04,090 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_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2023-11-29 06:16:04,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:16:04,236 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:16:04,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04 WrapperNode [2023-11-29 06:16:04,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:16:04,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:16:04,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:16:04,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:16:04,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,316 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2023-11-29 06:16:04,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:16:04,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:16:04,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:16:04,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:16:04,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,373 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 06:16:04,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:16:04,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:16:04,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:16:04,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:16:04,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (1/1) ... [2023-11-29 06:16:04,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:16:04,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:04,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:16:04,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:16:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:16:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:16:04,500 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:16:04,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:16:04,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:16:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:16:04,616 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:16:04,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:16:05,231 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:16:05,270 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:16:05,271 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:16:05,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:16:05 BoogieIcfgContainer [2023-11-29 06:16:05,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:16:05,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:16:05,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:16:05,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:16:05,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:16:03" (1/3) ... [2023-11-29 06:16:05,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edf3087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:16:05, skipping insertion in model container [2023-11-29 06:16:05,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:16:04" (2/3) ... [2023-11-29 06:16:05,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7edf3087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:16:05, skipping insertion in model container [2023-11-29 06:16:05,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:16:05" (3/3) ... [2023-11-29 06:16:05,300 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-27.i [2023-11-29 06:16:05,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:16:05,319 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:16:05,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:16:05,380 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;@a5c25ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:16:05,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:16:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 124 states have (on average 1.5483870967741935) internal successors, (192), 125 states have internal predecessors, (192), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 06:16:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 06:16:05,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:05,413 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:05,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:05,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:05,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2056512621, now seen corresponding path program 1 times [2023-11-29 06:16:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874519300] [2023-11-29 06:16:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:05,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874519300] [2023-11-29 06:16:05,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 06:16:05,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681438514] [2023-11-29 06:16:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:05,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:05,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:05,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:05,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:16:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:06,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:16:06,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2023-11-29 06:16:06,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:06,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681438514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:06,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:06,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:16:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453232593] [2023-11-29 06:16:06,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:16:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:06,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:16:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:16:06,249 INFO L87 Difference]: Start difference. First operand has 178 states, 124 states have (on average 1.5483870967741935) internal successors, (192), 125 states have internal predecessors, (192), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-29 06:16:06,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:06,339 INFO L93 Difference]: Finished difference Result 352 states and 635 transitions. [2023-11-29 06:16:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:16:06,342 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 336 [2023-11-29 06:16:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:06,354 INFO L225 Difference]: With dead ends: 352 [2023-11-29 06:16:06,355 INFO L226 Difference]: Without dead ends: 175 [2023-11-29 06:16:06,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:16:06,365 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:06,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:16:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-29 06:16:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-29 06:16:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 122 states have (on average 1.5) internal successors, (183), 122 states have internal predecessors, (183), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-29 06:16:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 285 transitions. [2023-11-29 06:16:06,442 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 285 transitions. Word has length 336 [2023-11-29 06:16:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:06,443 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 285 transitions. [2023-11-29 06:16:06,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-29 06:16:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 285 transitions. [2023-11-29 06:16:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-29 06:16:06,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:06,454 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:06,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:06,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:16:06,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:06,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash 14812741, now seen corresponding path program 1 times [2023-11-29 06:16:06,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:06,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384531589] [2023-11-29 06:16:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:06,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:06,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84016843] [2023-11-29 06:16:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:06,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:06,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:06,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:16:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:07,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:16:07,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-29 06:16:07,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:07,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:07,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384531589] [2023-11-29 06:16:07,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:07,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84016843] [2023-11-29 06:16:07,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84016843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:07,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:07,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:16:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690995848] [2023-11-29 06:16:07,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:07,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:16:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:16:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:16:07,943 INFO L87 Difference]: Start difference. First operand 175 states and 285 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:09,916 INFO L93 Difference]: Finished difference Result 1044 states and 1712 transitions. [2023-11-29 06:16:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:16:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 337 [2023-11-29 06:16:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:09,930 INFO L225 Difference]: With dead ends: 1044 [2023-11-29 06:16:09,930 INFO L226 Difference]: Without dead ends: 870 [2023-11-29 06:16:09,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:16:09,934 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1225 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:09,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1225 Valid, 2620 Invalid, 1257 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:16:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-11-29 06:16:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 331. [2023-11-29 06:16:10,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 226 states have (on average 1.4513274336283186) internal successors, (328), 226 states have internal predecessors, (328), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2023-11-29 06:16:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 532 transitions. [2023-11-29 06:16:10,050 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 532 transitions. Word has length 337 [2023-11-29 06:16:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:10,052 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 532 transitions. [2023-11-29 06:16:10,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 532 transitions. [2023-11-29 06:16:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-29 06:16:10,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:10,062 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:10,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:16:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:10,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:10,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1401016135, now seen corresponding path program 1 times [2023-11-29 06:16:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:10,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924499556] [2023-11-29 06:16:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:10,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692833834] [2023-11-29 06:16:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:10,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:10,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:10,352 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:10,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:16:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:10,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:16:10,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-29 06:16:11,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924499556] [2023-11-29 06:16:11,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:11,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692833834] [2023-11-29 06:16:11,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692833834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:16:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719229895] [2023-11-29 06:16:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:16:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:16:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:16:11,657 INFO L87 Difference]: Start difference. First operand 331 states and 532 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:13,189 INFO L93 Difference]: Finished difference Result 1551 states and 2487 transitions. [2023-11-29 06:16:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:16:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 337 [2023-11-29 06:16:13,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:13,203 INFO L225 Difference]: With dead ends: 1551 [2023-11-29 06:16:13,203 INFO L226 Difference]: Without dead ends: 1313 [2023-11-29 06:16:13,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:16:13,207 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1377 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:13,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 2409 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:16:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-11-29 06:16:13,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 644. [2023-11-29 06:16:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 507 states have (on average 1.5305719921104537) internal successors, (776), 508 states have internal predecessors, (776), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2023-11-29 06:16:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1040 transitions. [2023-11-29 06:16:13,278 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1040 transitions. Word has length 337 [2023-11-29 06:16:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:13,280 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1040 transitions. [2023-11-29 06:16:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:13,280 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1040 transitions. [2023-11-29 06:16:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-11-29 06:16:13,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:13,300 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:13,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:16:13,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:13,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:13,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2084803805, now seen corresponding path program 1 times [2023-11-29 06:16:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992565241] [2023-11-29 06:16:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:13,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:13,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91283691] [2023-11-29 06:16:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:13,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:13,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:13,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:13,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:16:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:13,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:16:13,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2023-11-29 06:16:13,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:16:13,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:13,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992565241] [2023-11-29 06:16:13,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91283691] [2023-11-29 06:16:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91283691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:16:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:16:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:16:13,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603991433] [2023-11-29 06:16:13,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:16:13,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:16:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:16:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:16:13,933 INFO L87 Difference]: Start difference. First operand 644 states and 1040 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:14,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:14,218 INFO L93 Difference]: Finished difference Result 1626 states and 2605 transitions. [2023-11-29 06:16:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:16:14,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 338 [2023-11-29 06:16:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:14,228 INFO L225 Difference]: With dead ends: 1626 [2023-11-29 06:16:14,228 INFO L226 Difference]: Without dead ends: 983 [2023-11-29 06:16:14,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:16:14,232 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 246 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:14,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 742 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:16:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-11-29 06:16:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 644. [2023-11-29 06:16:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 507 states have (on average 1.4911242603550297) internal successors, (756), 508 states have internal predecessors, (756), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2023-11-29 06:16:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1020 transitions. [2023-11-29 06:16:14,309 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1020 transitions. Word has length 338 [2023-11-29 06:16:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:14,310 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 1020 transitions. [2023-11-29 06:16:14,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2023-11-29 06:16:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1020 transitions. [2023-11-29 06:16:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-11-29 06:16:14,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:14,314 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:14,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:16:14,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:14,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:14,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:14,516 INFO L85 PathProgramCache]: Analyzing trace with hash -385048260, now seen corresponding path program 1 times [2023-11-29 06:16:14,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:14,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020013275] [2023-11-29 06:16:14,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:14,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:14,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786221324] [2023-11-29 06:16:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:14,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:14,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:14,566 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:14,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:16:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:14,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:16:14,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3155 proven. 192 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2023-11-29 06:16:15,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 102 proven. 195 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2023-11-29 06:16:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020013275] [2023-11-29 06:16:16,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:16,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786221324] [2023-11-29 06:16:16,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786221324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:16,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:16:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 06:16:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365338948] [2023-11-29 06:16:16,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:16:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:16:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:16:16,614 INFO L87 Difference]: Start difference. First operand 644 states and 1020 transitions. Second operand has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 5 states have call successors, (92), 3 states have call predecessors, (92), 7 states have return successors, (93), 5 states have call predecessors, (93), 5 states have call successors, (93) [2023-11-29 06:16:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:17,484 INFO L93 Difference]: Finished difference Result 1756 states and 2753 transitions. [2023-11-29 06:16:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:16:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 5 states have call successors, (92), 3 states have call predecessors, (92), 7 states have return successors, (93), 5 states have call predecessors, (93), 5 states have call successors, (93) Word has length 339 [2023-11-29 06:16:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:17,492 INFO L225 Difference]: With dead ends: 1756 [2023-11-29 06:16:17,492 INFO L226 Difference]: Without dead ends: 1113 [2023-11-29 06:16:17,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:16:17,496 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 847 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:17,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1018 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:16:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2023-11-29 06:16:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1076. [2023-11-29 06:16:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 906 states have (on average 1.490066225165563) internal successors, (1350), 910 states have internal predecessors, (1350), 156 states have call successors, (156), 13 states have call predecessors, (156), 13 states have return successors, (156), 152 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-29 06:16:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1662 transitions. [2023-11-29 06:16:17,584 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1662 transitions. Word has length 339 [2023-11-29 06:16:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:17,586 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1662 transitions. [2023-11-29 06:16:17,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 5 states have call successors, (92), 3 states have call predecessors, (92), 7 states have return successors, (93), 5 states have call predecessors, (93), 5 states have call successors, (93) [2023-11-29 06:16:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1662 transitions. [2023-11-29 06:16:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 06:16:17,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:17,591 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:17,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:16:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:17,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:17,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -599831490, now seen corresponding path program 1 times [2023-11-29 06:16:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308020237] [2023-11-29 06:16:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:17,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:17,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553216646] [2023-11-29 06:16:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:17,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:17,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:17,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:17,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:16:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:18,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:16:18,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2810 proven. 207 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2023-11-29 06:16:18,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 87 proven. 210 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2023-11-29 06:16:19,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:19,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308020237] [2023-11-29 06:16:19,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553216646] [2023-11-29 06:16:19,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553216646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:19,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:16:19,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-29 06:16:19,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494137406] [2023-11-29 06:16:19,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:19,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:16:19,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:16:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:16:19,309 INFO L87 Difference]: Start difference. First operand 1076 states and 1662 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2023-11-29 06:16:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:16:20,052 INFO L93 Difference]: Finished difference Result 2179 states and 3345 transitions. [2023-11-29 06:16:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:16:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) Word has length 340 [2023-11-29 06:16:20,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:16:20,062 INFO L225 Difference]: With dead ends: 2179 [2023-11-29 06:16:20,062 INFO L226 Difference]: Without dead ends: 1104 [2023-11-29 06:16:20,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 664 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:16:20,067 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 442 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:16:20,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 791 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:16:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2023-11-29 06:16:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1100. [2023-11-29 06:16:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 924 states have (on average 1.474025974025974) internal successors, (1362), 928 states have internal predecessors, (1362), 156 states have call successors, (156), 19 states have call predecessors, (156), 19 states have return successors, (156), 152 states have call predecessors, (156), 156 states have call successors, (156) [2023-11-29 06:16:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1674 transitions. [2023-11-29 06:16:20,190 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1674 transitions. Word has length 340 [2023-11-29 06:16:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:16:20,191 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1674 transitions. [2023-11-29 06:16:20,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (92), 4 states have call predecessors, (92), 4 states have call successors, (92) [2023-11-29 06:16:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1674 transitions. [2023-11-29 06:16:20,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 06:16:20,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:16:20,196 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:20,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:16:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:20,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:16:20,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:16:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -176184768, now seen corresponding path program 1 times [2023-11-29 06:16:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:16:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134898141] [2023-11-29 06:16:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:16:20,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:16:20,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255477915] [2023-11-29 06:16:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:16:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:16:20,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:16:20,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:16:20,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:16:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:16:20,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:16:20,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:16:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3978 proven. 297 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2023-11-29 06:16:24,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:16:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 393 proven. 327 refuted. 0 times theorem prover too weak. 4380 trivial. 0 not checked. [2023-11-29 06:16:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:16:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134898141] [2023-11-29 06:16:32,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:16:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255477915] [2023-11-29 06:16:32,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255477915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:16:32,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:16:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2023-11-29 06:16:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686856375] [2023-11-29 06:16:32,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:16:32,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 06:16:32,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:16:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 06:16:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=1610, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 06:16:32,235 INFO L87 Difference]: Start difference. First operand 1100 states and 1674 transitions. Second operand has 46 states, 44 states have (on average 4.704545454545454) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (102), 8 states have call predecessors, (102), 16 states have return successors, (102), 14 states have call predecessors, (102), 14 states have call successors, (102) [2023-11-29 06:17:00,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:17:03,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:17:06,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:17:29,535 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 93 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:18:04,990 WARN L293 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 96 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:18:44,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:18:58,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:19:02,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:19:13,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:20:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:20:07,436 INFO L93 Difference]: Finished difference Result 6930 states and 10360 transitions. [2023-11-29 06:20:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 06:20:07,437 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 4.704545454545454) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (102), 8 states have call predecessors, (102), 16 states have return successors, (102), 14 states have call predecessors, (102), 14 states have call successors, (102) Word has length 340 [2023-11-29 06:20:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:20:07,461 INFO L225 Difference]: With dead ends: 6930 [2023-11-29 06:20:07,461 INFO L226 Difference]: Without dead ends: 5831 [2023-11-29 06:20:07,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9473 ImplicationChecksByTransitivity, 169.3s TimeCoverageRelationStatistics Valid=5572, Invalid=18604, Unknown=4, NotChecked=0, Total=24180 [2023-11-29 06:20:07,471 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 6541 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 6934 mSolverCounterSat, 1795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6576 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 8729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1795 IncrementalHoareTripleChecker+Valid, 6934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:20:07,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6576 Valid, 4205 Invalid, 8729 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1795 Valid, 6934 Invalid, 0 Unknown, 0 Unchecked, 47.2s Time] [2023-11-29 06:20:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2023-11-29 06:20:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 3667. [2023-11-29 06:20:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3069 states have (on average 1.4454219615509938) internal successors, (4436), 3081 states have internal predecessors, (4436), 507 states have call successors, (507), 90 states have call predecessors, (507), 90 states have return successors, (507), 495 states have call predecessors, (507), 507 states have call successors, (507) [2023-11-29 06:20:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5450 transitions. [2023-11-29 06:20:08,054 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5450 transitions. Word has length 340 [2023-11-29 06:20:08,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:20:08,055 INFO L495 AbstractCegarLoop]: Abstraction has 3667 states and 5450 transitions. [2023-11-29 06:20:08,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 4.704545454545454) internal successors, (207), 42 states have internal predecessors, (207), 14 states have call successors, (102), 8 states have call predecessors, (102), 16 states have return successors, (102), 14 states have call predecessors, (102), 14 states have call successors, (102) [2023-11-29 06:20:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5450 transitions. [2023-11-29 06:20:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 06:20:08,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:20:08,061 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:08,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:20:08,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:08,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:20:08,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash -316733378, now seen corresponding path program 1 times [2023-11-29 06:20:08,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:08,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794996529] [2023-11-29 06:20:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:08,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:20:08,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495835549] [2023-11-29 06:20:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:20:08,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:20:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:20:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:08,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 06:20:08,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:20:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3629 proven. 285 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2023-11-29 06:20:11,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:20:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 279 proven. 303 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2023-11-29 06:20:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794996529] [2023-11-29 06:20:14,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:20:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495835549] [2023-11-29 06:20:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495835549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:20:14,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:20:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-11-29 06:20:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528309025] [2023-11-29 06:20:14,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:20:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 06:20:14,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 06:20:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 06:20:14,941 INFO L87 Difference]: Start difference. First operand 3667 states and 5450 transitions. Second operand has 38 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) [2023-11-29 06:20:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:20:44,438 INFO L93 Difference]: Finished difference Result 23969 states and 35630 transitions. [2023-11-29 06:20:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2023-11-29 06:20:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) Word has length 340 [2023-11-29 06:20:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:20:44,531 INFO L225 Difference]: With dead ends: 23969 [2023-11-29 06:20:44,531 INFO L226 Difference]: Without dead ends: 22602 [2023-11-29 06:20:44,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9438 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=6022, Invalid=17234, Unknown=0, NotChecked=0, Total=23256 [2023-11-29 06:20:44,547 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 5350 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 7716 mSolverCounterSat, 2122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5383 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 9838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2122 IncrementalHoareTripleChecker+Valid, 7716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:20:44,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5383 Valid, 6466 Invalid, 9838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2122 Valid, 7716 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-11-29 06:20:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22602 states. [2023-11-29 06:20:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22602 to 9774. [2023-11-29 06:20:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9774 states, 8153 states have (on average 1.445112228627499) internal successors, (11782), 8179 states have internal predecessors, (11782), 1339 states have call successors, (1339), 281 states have call predecessors, (1339), 281 states have return successors, (1339), 1313 states have call predecessors, (1339), 1339 states have call successors, (1339) [2023-11-29 06:20:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9774 states to 9774 states and 14460 transitions. [2023-11-29 06:20:46,721 INFO L78 Accepts]: Start accepts. Automaton has 9774 states and 14460 transitions. Word has length 340 [2023-11-29 06:20:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:20:46,722 INFO L495 AbstractCegarLoop]: Abstraction has 9774 states and 14460 transitions. [2023-11-29 06:20:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.351351351351352) internal successors, (198), 36 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) [2023-11-29 06:20:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9774 states and 14460 transitions. [2023-11-29 06:20:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 06:20:46,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:20:46,731 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:20:46,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:20:46,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:46,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:20:46,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:20:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1606494656, now seen corresponding path program 1 times [2023-11-29 06:20:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:20:46,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781642854] [2023-11-29 06:20:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:46,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:20:46,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:20:46,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023022089] [2023-11-29 06:20:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:20:46,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:20:46,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:20:46,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:20:46,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:20:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:20:47,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:20:47,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:20:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3629 proven. 285 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2023-11-29 06:20:49,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:20:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 279 proven. 303 refuted. 0 times theorem prover too weak. 4518 trivial. 0 not checked. [2023-11-29 06:20:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:20:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781642854] [2023-11-29 06:20:57,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:20:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023022089] [2023-11-29 06:20:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023022089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:20:57,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:20:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2023-11-29 06:20:57,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926832774] [2023-11-29 06:20:57,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:20:57,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 06:20:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:20:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 06:20:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=973, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:20:57,969 INFO L87 Difference]: Start difference. First operand 9774 states and 14460 transitions. Second operand has 36 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) [2023-11-29 06:21:04,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:25,516 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 86 DAG size of output: 31 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:21:29,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:33,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:21:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:21:44,104 INFO L93 Difference]: Finished difference Result 40033 states and 59341 transitions. [2023-11-29 06:21:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 06:21:44,105 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) Word has length 340 [2023-11-29 06:21:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:21:44,196 INFO L225 Difference]: With dead ends: 40033 [2023-11-29 06:21:44,196 INFO L226 Difference]: Without dead ends: 35017 [2023-11-29 06:21:44,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3238 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=2631, Invalid=7071, Unknown=0, NotChecked=0, Total=9702 [2023-11-29 06:21:44,214 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2359 mSDsluCounter, 5156 mSDsCounter, 0 mSdLazyCounter, 6358 mSolverCounterSat, 1047 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 5583 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 6358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:21:44,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 5583 Invalid, 7406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1047 Valid, 6358 Invalid, 1 Unknown, 0 Unchecked, 25.2s Time] [2023-11-29 06:21:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35017 states. [2023-11-29 06:21:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35017 to 19599. [2023-11-29 06:21:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19599 states, 16217 states have (on average 1.430782512178578) internal successors, (23203), 16273 states have internal predecessors, (23203), 2761 states have call successors, (2761), 620 states have call predecessors, (2761), 620 states have return successors, (2761), 2705 states have call predecessors, (2761), 2761 states have call successors, (2761) [2023-11-29 06:21:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19599 states to 19599 states and 28725 transitions. [2023-11-29 06:21:49,051 INFO L78 Accepts]: Start accepts. Automaton has 19599 states and 28725 transitions. Word has length 340 [2023-11-29 06:21:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:21:49,052 INFO L495 AbstractCegarLoop]: Abstraction has 19599 states and 28725 transitions. [2023-11-29 06:21:49,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.6571428571428575) internal successors, (198), 34 states have internal predecessors, (198), 10 states have call successors, (102), 6 states have call predecessors, (102), 13 states have return successors, (102), 10 states have call predecessors, (102), 10 states have call successors, (102) [2023-11-29 06:21:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19599 states and 28725 transitions. [2023-11-29 06:21:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-29 06:21:49,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:21:49,064 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:49,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:21:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:21:49,265 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:21:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:21:49,266 INFO L85 PathProgramCache]: Analyzing trace with hash -485702144, now seen corresponding path program 1 times [2023-11-29 06:21:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:21:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654798571] [2023-11-29 06:21:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:21:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:21:49,353 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:21:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366809765] [2023-11-29 06:21:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:21:49,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:21:49,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:21:49,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:21:49,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfaaf8ab-cb90-4d68-8777-4d0531b7d8fd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:21:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:21:49,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 06:21:49,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:21:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3782 proven. 501 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2023-11-29 06:21:53,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:22:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 423 proven. 564 refuted. 0 times theorem prover too weak. 4113 trivial. 0 not checked. [2023-11-29 06:22:10,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:22:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654798571] [2023-11-29 06:22:10,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:22:10,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366809765] [2023-11-29 06:22:10,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366809765] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:22:10,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:22:10,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31] total 59 [2023-11-29 06:22:10,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429942578] [2023-11-29 06:22:10,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:22:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 06:22:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:22:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 06:22:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 06:22:10,597 INFO L87 Difference]: Start difference. First operand 19599 states and 28725 transitions. Second operand has 59 states, 55 states have (on average 3.981818181818182) internal successors, (219), 53 states have internal predecessors, (219), 18 states have call successors, (102), 10 states have call predecessors, (102), 20 states have return successors, (102), 16 states have call predecessors, (102), 18 states have call successors, (102) [2023-11-29 06:22:27,138 WARN L293 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 150 DAG size of output: 129 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:22:46,939 WARN L293 SmtUtils]: Spent 16.59s on a formula simplification. DAG size of input: 159 DAG size of output: 138 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:22:48,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:22:55,375 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 130 DAG size of output: 115 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:23:15,766 WARN L293 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 148 DAG size of output: 102 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:23:49,026 WARN L293 SmtUtils]: Spent 26.02s on a formula simplification. DAG size of input: 146 DAG size of output: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:23:51,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:23:53,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:23:59,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:24:25,044 WARN L293 SmtUtils]: Spent 25.23s on a formula simplification. DAG size of input: 152 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:24:46,020 WARN L293 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 161 DAG size of output: 140 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:24:50,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:24:54,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:24:59,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:02,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:06,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:20,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:23,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:24,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:28,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:30,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:34,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:38,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:42,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:45,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:48,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:50,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:52,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:55,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:25:59,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:02,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:04,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:08,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:12,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:16,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:20,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:24,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:26,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:30,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:32,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:35,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:39,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:44,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:49,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:52,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:54,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:26:58,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:02,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:06,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:11,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:13,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:15,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:19,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:24,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:28,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:32,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:36,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:38,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:42,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:27:59,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:10,975 WARN L293 SmtUtils]: Spent 11.34s on a formula simplification. DAG size of input: 152 DAG size of output: 143 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:28:13,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:17,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:21,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:25,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:27,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:31,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:35,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:38,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:40,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:42,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:46,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:28:49,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:29:02,530 WARN L293 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 152 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:29:21,499 WARN L293 SmtUtils]: Spent 17.93s on a formula simplification. DAG size of input: 152 DAG size of output: 131 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 06:29:24,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:29:28,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:29:29,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 06:30:15,931 WARN L293 SmtUtils]: Spent 29.27s on a formula simplification. DAG size of input: 165 DAG size of output: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)