./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/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 68466dc8851e15d5c55e16cb6abd8cdccbbd4db381e8ec074cd8097ac9916cb7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:08:27,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:08:27,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:08:27,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:08:27,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:08:27,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:08:27,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:08:27,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:08:27,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:08:27,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:08:27,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:08:27,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:08:27,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:08:27,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:08:27,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:08:27,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:08:27,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:08:27,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:08:27,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:08:27,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:08:27,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:08:27,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:08:27,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:08:27,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:08:27,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:08:27,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:08:27,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:08:27,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:08:27,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:08:27,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:08:27,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:08:27,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:08:27,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:08:27,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:08:27,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:08:27,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:08:27,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:08:27,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:08:27,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:08:27,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:08:27,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:08:27,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:08:27,228 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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68466dc8851e15d5c55e16cb6abd8cdccbbd4db381e8ec074cd8097ac9916cb7 [2023-11-29 07:08:27,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:08:27,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:08:27,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:08:27,463 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:08:27,463 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:08:27,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.i [2023-11-29 07:08:30,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:08:30,414 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:08:30,414 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.i [2023-11-29 07:08:30,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/data/1a29462c2/faa758a895df4c7fa8045242254ef3d2/FLAGac029d19e [2023-11-29 07:08:30,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/data/1a29462c2/faa758a895df4c7fa8045242254ef3d2 [2023-11-29 07:08:30,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:08:30,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:08:30,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:30,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:08:30,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:08:30,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1558e16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30, skipping insertion in model container [2023-11-29 07:08:30,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,488 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:08:30,611 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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.i[916,929] [2023-11-29 07:08:30,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:30,730 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:08:30,740 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_e6ff2ef4-37df-49bf-9fab-04f8f1822238/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-79.i[916,929] [2023-11-29 07:08:30,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:08:30,810 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:08:30,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30 WrapperNode [2023-11-29 07:08:30,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:08:30,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:30,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:08:30,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:08:30,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,836 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,888 INFO L138 Inliner]: procedures = 26, calls = 86, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 425 [2023-11-29 07:08:30,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:08:30,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:08:30,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:08:30,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:08:30,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,932 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 07:08:30,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:08:30,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:08:30,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:08:30,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:08:30,981 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (1/1) ... [2023-11-29 07:08:30,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:08:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:31,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:08:31,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:08:31,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 07:08:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 07:08:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:08:31,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:08:31,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:08:31,148 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:08:31,150 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:08:31,627 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:08:31,667 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:08:31,667 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:08:31,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:31 BoogieIcfgContainer [2023-11-29 07:08:31,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:08:31,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:08:31,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:08:31,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:08:31,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:08:30" (1/3) ... [2023-11-29 07:08:31,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312e83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:31, skipping insertion in model container [2023-11-29 07:08:31,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:08:30" (2/3) ... [2023-11-29 07:08:31,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312e83d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:08:31, skipping insertion in model container [2023-11-29 07:08:31,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:08:31" (3/3) ... [2023-11-29 07:08:31,675 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-79.i [2023-11-29 07:08:31,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:08:31,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 07:08:31,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:08:31,739 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;@7d4f442, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:08:31,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 07:08:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 92 states have internal predecessors, (130), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 07:08:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-29 07:08:31,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:31,770 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:31,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:31,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1895325074, now seen corresponding path program 1 times [2023-11-29 07:08:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171766066] [2023-11-29 07:08:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:31,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:32,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171766066] [2023-11-29 07:08:32,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 07:08:32,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367654720] [2023-11-29 07:08:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:32,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:32,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:32,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:32,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:08:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:32,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 07:08:32,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 10368 trivial. 0 not checked. [2023-11-29 07:08:32,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:32,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367654720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:32,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:32,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:08:32,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352666514] [2023-11-29 07:08:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:08:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:08:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:08:32,528 INFO L87 Difference]: Start difference. First operand has 167 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 92 states have internal predecessors, (130), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-11-29 07:08:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:32,586 INFO L93 Difference]: Finished difference Result 331 states and 623 transitions. [2023-11-29 07:08:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:08:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) Word has length 437 [2023-11-29 07:08:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:32,597 INFO L225 Difference]: With dead ends: 331 [2023-11-29 07:08:32,597 INFO L226 Difference]: Without dead ends: 165 [2023-11-29 07:08:32,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 436 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 07:08:32,607 INFO L413 NwaCegarLoop]: 267 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, 267 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 07:08:32,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 267 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:32,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-29 07:08:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-11-29 07:08:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 90 states have internal predecessors, (124), 73 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2023-11-29 07:08:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 270 transitions. [2023-11-29 07:08:32,671 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 270 transitions. Word has length 437 [2023-11-29 07:08:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:32,671 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 270 transitions. [2023-11-29 07:08:32,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (73), 2 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 2 states have call successors, (73) [2023-11-29 07:08:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 270 transitions. [2023-11-29 07:08:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2023-11-29 07:08:32,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:32,686 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:32,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:32,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1719710484, now seen corresponding path program 1 times [2023-11-29 07:08:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062048156] [2023-11-29 07:08:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:32,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:32,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2791938] [2023-11-29 07:08:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:32,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:32,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:32,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:08:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:33,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:08:33,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 07:08:33,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062048156] [2023-11-29 07:08:33,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2791938] [2023-11-29 07:08:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2791938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:33,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:08:33,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082279627] [2023-11-29 07:08:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:33,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:08:33,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:33,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:08:33,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:33,391 INFO L87 Difference]: Start difference. First operand 165 states and 270 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:33,448 INFO L93 Difference]: Finished difference Result 340 states and 553 transitions. [2023-11-29 07:08:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:08:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 437 [2023-11-29 07:08:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:33,454 INFO L225 Difference]: With dead ends: 340 [2023-11-29 07:08:33,454 INFO L226 Difference]: Without dead ends: 176 [2023-11-29 07:08:33,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:33,457 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 31 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:33,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 516 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-29 07:08:33,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2023-11-29 07:08:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 95 states have (on average 1.3473684210526315) internal successors, (128), 96 states have internal predecessors, (128), 77 states have call successors, (77), 2 states have call predecessors, (77), 2 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-29 07:08:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 282 transitions. [2023-11-29 07:08:33,493 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 282 transitions. Word has length 437 [2023-11-29 07:08:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:33,495 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 282 transitions. [2023-11-29 07:08:33,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 282 transitions. [2023-11-29 07:08:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2023-11-29 07:08:33,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:33,500 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:33,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:08:33,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:33,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:33,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1529260950, now seen corresponding path program 1 times [2023-11-29 07:08:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296241550] [2023-11-29 07:08:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:33,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:33,772 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105575023] [2023-11-29 07:08:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:33,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:33,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:33,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:33,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:08:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:34,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:08:34,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 5088 proven. 84 refuted. 0 times theorem prover too weak. 5340 trivial. 0 not checked. [2023-11-29 07:08:34,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 132 proven. 84 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-11-29 07:08:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296241550] [2023-11-29 07:08:34,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105575023] [2023-11-29 07:08:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105575023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:34,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:08:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 07:08:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621332556] [2023-11-29 07:08:34,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:34,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:08:34,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:08:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:08:34,809 INFO L87 Difference]: Start difference. First operand 175 states and 282 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 07:08:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:35,277 INFO L93 Difference]: Finished difference Result 352 states and 560 transitions. [2023-11-29 07:08:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 07:08:35,278 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), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) Word has length 438 [2023-11-29 07:08:35,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:35,282 INFO L225 Difference]: With dead ends: 352 [2023-11-29 07:08:35,282 INFO L226 Difference]: Without dead ends: 184 [2023-11-29 07:08:35,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 878 GetRequests, 868 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:08:35,285 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 143 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:35,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 410 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:08:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-29 07:08:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 178. [2023-11-29 07:08:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 98 states have internal predecessors, (128), 77 states have call successors, (77), 3 states have call predecessors, (77), 3 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-29 07:08:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 282 transitions. [2023-11-29 07:08:35,319 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 282 transitions. Word has length 438 [2023-11-29 07:08:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:35,321 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 282 transitions. [2023-11-29 07:08:35,321 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), 2 states have call successors, (101), 2 states have call predecessors, (101), 4 states have return successors, (102), 2 states have call predecessors, (102), 2 states have call successors, (102) [2023-11-29 07:08:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 282 transitions. [2023-11-29 07:08:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2023-11-29 07:08:35,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:35,326 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:35,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:08:35,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 07:08:35,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:35,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:35,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1297012587, now seen corresponding path program 1 times [2023-11-29 07:08:35,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:35,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992326519] [2023-11-29 07:08:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:35,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567037436] [2023-11-29 07:08:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:35,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:35,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:35,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:35,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:08:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:35,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:08:35,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4678 proven. 69 refuted. 0 times theorem prover too weak. 5765 trivial. 0 not checked. [2023-11-29 07:08:36,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 147 proven. 69 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-11-29 07:08:36,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992326519] [2023-11-29 07:08:36,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567037436] [2023-11-29 07:08:36,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567037436] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:36,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:08:36,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 07:08:36,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420092070] [2023-11-29 07:08:36,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:36,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 07:08:36,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:36,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 07:08:36,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:08:36,597 INFO L87 Difference]: Start difference. First operand 178 states and 282 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2023-11-29 07:08:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:37,052 INFO L93 Difference]: Finished difference Result 359 states and 562 transitions. [2023-11-29 07:08:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 07:08:37,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) Word has length 439 [2023-11-29 07:08:37,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:37,056 INFO L225 Difference]: With dead ends: 359 [2023-11-29 07:08:37,056 INFO L226 Difference]: Without dead ends: 188 [2023-11-29 07:08:37,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:08:37,058 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 233 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:37,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 388 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:08:37,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-29 07:08:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2023-11-29 07:08:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 100 states have (on average 1.29) internal successors, (129), 101 states have internal predecessors, (129), 77 states have call successors, (77), 4 states have call predecessors, (77), 4 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-29 07:08:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 283 transitions. [2023-11-29 07:08:37,087 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 283 transitions. Word has length 439 [2023-11-29 07:08:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:37,088 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 283 transitions. [2023-11-29 07:08:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (96), 2 states have call predecessors, (96), 4 states have return successors, (97), 3 states have call predecessors, (97), 3 states have call successors, (97) [2023-11-29 07:08:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 283 transitions. [2023-11-29 07:08:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2023-11-29 07:08:37,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:37,092 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:37,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:08:37,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:37,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:37,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:37,293 INFO L85 PathProgramCache]: Analyzing trace with hash -382736305, now seen corresponding path program 1 times [2023-11-29 07:08:37,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:37,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953155008] [2023-11-29 07:08:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:37,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386807437] [2023-11-29 07:08:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:37,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:37,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:37,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:37,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:08:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:37,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:08:37,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 07:08:38,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953155008] [2023-11-29 07:08:38,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386807437] [2023-11-29 07:08:38,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386807437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:38,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:38,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:08:38,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723524968] [2023-11-29 07:08:38,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:38,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:08:38,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:38,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:08:38,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:38,192 INFO L87 Difference]: Start difference. First operand 182 states and 283 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:38,237 INFO L93 Difference]: Finished difference Result 532 states and 827 transitions. [2023-11-29 07:08:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:08:38,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 440 [2023-11-29 07:08:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:38,241 INFO L225 Difference]: With dead ends: 532 [2023-11-29 07:08:38,242 INFO L226 Difference]: Without dead ends: 357 [2023-11-29 07:08:38,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:38,243 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 42 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:38,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 521 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:38,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-29 07:08:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 355. [2023-11-29 07:08:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 196 states have (on average 1.2857142857142858) internal successors, (252), 197 states have internal predecessors, (252), 150 states have call successors, (150), 8 states have call predecessors, (150), 8 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 07:08:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 552 transitions. [2023-11-29 07:08:38,303 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 552 transitions. Word has length 440 [2023-11-29 07:08:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:38,304 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 552 transitions. [2023-11-29 07:08:38,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 552 transitions. [2023-11-29 07:08:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-29 07:08:38,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:38,307 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:38,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:08:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:38,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:38,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:38,509 INFO L85 PathProgramCache]: Analyzing trace with hash -11278666, now seen corresponding path program 1 times [2023-11-29 07:08:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736452013] [2023-11-29 07:08:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:38,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:38,556 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414557725] [2023-11-29 07:08:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:38,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:38,558 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:38,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:08:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:38,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:08:38,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 3348 proven. 174 refuted. 0 times theorem prover too weak. 6990 trivial. 0 not checked. [2023-11-29 07:08:39,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 42 proven. 174 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-11-29 07:08:39,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:39,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736452013] [2023-11-29 07:08:39,860 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:39,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414557725] [2023-11-29 07:08:39,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414557725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:39,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:08:39,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 07:08:39,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332329903] [2023-11-29 07:08:39,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:39,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 07:08:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:39,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 07:08:39,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 07:08:39,864 INFO L87 Difference]: Start difference. First operand 355 states and 552 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 07:08:40,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:40,358 INFO L93 Difference]: Finished difference Result 554 states and 846 transitions. [2023-11-29 07:08:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 07:08:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 441 [2023-11-29 07:08:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:40,367 INFO L225 Difference]: With dead ends: 554 [2023-11-29 07:08:40,368 INFO L226 Difference]: Without dead ends: 379 [2023-11-29 07:08:40,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:08:40,370 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 185 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:40,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 395 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:08:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-11-29 07:08:40,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 363. [2023-11-29 07:08:40,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 202 states have (on average 1.2673267326732673) internal successors, (256), 203 states have internal predecessors, (256), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 07:08:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 556 transitions. [2023-11-29 07:08:40,444 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 556 transitions. Word has length 441 [2023-11-29 07:08:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:40,445 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 556 transitions. [2023-11-29 07:08:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 07:08:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 556 transitions. [2023-11-29 07:08:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2023-11-29 07:08:40,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:40,450 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:40,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 07:08:40,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:40,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:40,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash 779351979, now seen corresponding path program 1 times [2023-11-29 07:08:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:40,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518712385] [2023-11-29 07:08:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:40,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:40,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602352844] [2023-11-29 07:08:40,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:40,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:40,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:40,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:40,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:08:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:40,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:08:41,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 07:08:42,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518712385] [2023-11-29 07:08:42,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:42,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602352844] [2023-11-29 07:08:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602352844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:42,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:42,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:08:42,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050602476] [2023-11-29 07:08:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:42,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 07:08:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 07:08:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:08:42,202 INFO L87 Difference]: Start difference. First operand 363 states and 556 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:42,457 INFO L93 Difference]: Finished difference Result 721 states and 1102 transitions. [2023-11-29 07:08:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:08:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 441 [2023-11-29 07:08:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:42,462 INFO L225 Difference]: With dead ends: 721 [2023-11-29 07:08:42,462 INFO L226 Difference]: Without dead ends: 365 [2023-11-29 07:08:42,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:08:42,464 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 110 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:42,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 604 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:08:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-29 07:08:42,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 363. [2023-11-29 07:08:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 202 states have (on average 1.2623762376237624) internal successors, (255), 203 states have internal predecessors, (255), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 07:08:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 555 transitions. [2023-11-29 07:08:42,512 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 555 transitions. Word has length 441 [2023-11-29 07:08:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:42,513 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 555 transitions. [2023-11-29 07:08:42,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 555 transitions. [2023-11-29 07:08:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-11-29 07:08:42,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:42,516 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:42,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:08:42,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:42,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:42,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash 200294282, now seen corresponding path program 1 times [2023-11-29 07:08:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:42,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205249720] [2023-11-29 07:08:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:42,762 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489126474] [2023-11-29 07:08:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:42,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:42,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:42,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:42,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:08:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:08:43,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10512 trivial. 0 not checked. [2023-11-29 07:08:43,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:08:43,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205249720] [2023-11-29 07:08:43,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489126474] [2023-11-29 07:08:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489126474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:08:43,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:08:43,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:08:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817393274] [2023-11-29 07:08:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:08:43,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:08:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:08:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:43,071 INFO L87 Difference]: Start difference. First operand 363 states and 555 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:43,148 INFO L93 Difference]: Finished difference Result 719 states and 1099 transitions. [2023-11-29 07:08:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:08:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) Word has length 442 [2023-11-29 07:08:43,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:43,153 INFO L225 Difference]: With dead ends: 719 [2023-11-29 07:08:43,153 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 07:08:43,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:08:43,156 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 16 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:43,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 496 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:08:43,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 07:08:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2023-11-29 07:08:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 202 states have (on average 1.2524752475247525) internal successors, (253), 203 states have internal predecessors, (253), 150 states have call successors, (150), 10 states have call predecessors, (150), 10 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-11-29 07:08:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 553 transitions. [2023-11-29 07:08:43,226 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 553 transitions. Word has length 442 [2023-11-29 07:08:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:43,227 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 553 transitions. [2023-11-29 07:08:43,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (73), 1 states have call predecessors, (73), 1 states have return successors, (73), 1 states have call predecessors, (73), 1 states have call successors, (73) [2023-11-29 07:08:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 553 transitions. [2023-11-29 07:08:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-11-29 07:08:43,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:43,232 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:43,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:08:43,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:43,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash 458459720, now seen corresponding path program 1 times [2023-11-29 07:08:43,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:43,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066872022] [2023-11-29 07:08:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:43,471 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:43,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550579206] [2023-11-29 07:08:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:43,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:43,473 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:43,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:08:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:43,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 07:08:43,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 7431 proven. 249 refuted. 0 times theorem prover too weak. 2832 trivial. 0 not checked. [2023-11-29 07:08:45,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:08:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 381 proven. 258 refuted. 0 times theorem prover too weak. 9873 trivial. 0 not checked. [2023-11-29 07:08:48,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:08:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066872022] [2023-11-29 07:08:48,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:08:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550579206] [2023-11-29 07:08:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550579206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:08:48,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:08:48,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2023-11-29 07:08:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980333836] [2023-11-29 07:08:48,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:08:48,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 07:08:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:08:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 07:08:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2023-11-29 07:08:48,590 INFO L87 Difference]: Start difference. First operand 363 states and 553 transitions. Second operand has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 9 states have call successors, (119), 5 states have call predecessors, (119), 10 states have return successors, (119), 9 states have call predecessors, (119), 9 states have call successors, (119) [2023-11-29 07:08:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:08:55,053 INFO L93 Difference]: Finished difference Result 2065 states and 2993 transitions. [2023-11-29 07:08:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-29 07:08:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 9 states have call successors, (119), 5 states have call predecessors, (119), 10 states have return successors, (119), 9 states have call predecessors, (119), 9 states have call successors, (119) Word has length 442 [2023-11-29 07:08:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:08:55,065 INFO L225 Difference]: With dead ends: 2065 [2023-11-29 07:08:55,065 INFO L226 Difference]: Without dead ends: 1709 [2023-11-29 07:08:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2269 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1952, Invalid=5704, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 07:08:55,071 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 1790 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 2846 mSolverCounterSat, 1821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 4667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1821 IncrementalHoareTripleChecker+Valid, 2846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:08:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1652 Invalid, 4667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1821 Valid, 2846 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 07:08:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2023-11-29 07:08:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 994. [2023-11-29 07:08:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 591 states have (on average 1.257191201353638) internal successors, (743), 597 states have internal predecessors, (743), 366 states have call successors, (366), 36 states have call predecessors, (366), 36 states have return successors, (366), 360 states have call predecessors, (366), 366 states have call successors, (366) [2023-11-29 07:08:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1475 transitions. [2023-11-29 07:08:55,328 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1475 transitions. Word has length 442 [2023-11-29 07:08:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:08:55,329 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1475 transitions. [2023-11-29 07:08:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.966666666666667) internal successors, (149), 30 states have internal predecessors, (149), 9 states have call successors, (119), 5 states have call predecessors, (119), 10 states have return successors, (119), 9 states have call predecessors, (119), 9 states have call successors, (119) [2023-11-29 07:08:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1475 transitions. [2023-11-29 07:08:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-11-29 07:08:55,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:08:55,333 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:55,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:08:55,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:55,535 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:08:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:08:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 677314438, now seen corresponding path program 1 times [2023-11-29 07:08:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:08:55,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144828815] [2023-11-29 07:08:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:08:55,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:08:55,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513507655] [2023-11-29 07:08:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:08:55,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:08:55,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:08:55,586 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:08:55,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:08:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:08:56,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 07:08:56,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:08:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 7354 proven. 375 refuted. 0 times theorem prover too weak. 2783 trivial. 0 not checked. [2023-11-29 07:08:58,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 381 proven. 258 refuted. 0 times theorem prover too weak. 9873 trivial. 0 not checked. [2023-11-29 07:09:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144828815] [2023-11-29 07:09:02,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:09:02,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513507655] [2023-11-29 07:09:02,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513507655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:02,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:02,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18] total 38 [2023-11-29 07:09:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165409942] [2023-11-29 07:09:02,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:02,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 07:09:02,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 07:09:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 07:09:02,590 INFO L87 Difference]: Start difference. First operand 994 states and 1475 transitions. Second operand has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 9 states have call successors, (119), 6 states have call predecessors, (119), 11 states have return successors, (119), 8 states have call predecessors, (119), 9 states have call successors, (119) [2023-11-29 07:09:26,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:26,478 INFO L93 Difference]: Finished difference Result 5423 states and 7547 transitions. [2023-11-29 07:09:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-11-29 07:09:26,479 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 9 states have call successors, (119), 6 states have call predecessors, (119), 11 states have return successors, (119), 8 states have call predecessors, (119), 9 states have call successors, (119) Word has length 442 [2023-11-29 07:09:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:26,509 INFO L225 Difference]: With dead ends: 5423 [2023-11-29 07:09:26,509 INFO L226 Difference]: Without dead ends: 4499 [2023-11-29 07:09:26,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 861 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18114 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=8141, Invalid=36591, Unknown=0, NotChecked=0, Total=44732 [2023-11-29 07:09:26,532 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 3134 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 4395 mSolverCounterSat, 3514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3161 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 7909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3514 IncrementalHoareTripleChecker+Valid, 4395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:26,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3161 Valid, 2311 Invalid, 7909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3514 Valid, 4395 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-29 07:09:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2023-11-29 07:09:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 532. [2023-11-29 07:09:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 318 states have (on average 1.248427672955975) internal successors, (397), 319 states have internal predecessors, (397), 185 states have call successors, (185), 28 states have call predecessors, (185), 28 states have return successors, (185), 184 states have call predecessors, (185), 185 states have call successors, (185) [2023-11-29 07:09:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 767 transitions. [2023-11-29 07:09:26,918 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 767 transitions. Word has length 442 [2023-11-29 07:09:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:26,919 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 767 transitions. [2023-11-29 07:09:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 9 states have call successors, (119), 6 states have call predecessors, (119), 11 states have return successors, (119), 8 states have call predecessors, (119), 9 states have call successors, (119) [2023-11-29 07:09:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 767 transitions. [2023-11-29 07:09:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-11-29 07:09:26,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:26,923 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:26,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 07:09:27,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 07:09:27,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:27,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1100016264, now seen corresponding path program 1 times [2023-11-29 07:09:27,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:27,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940469528] [2023-11-29 07:09:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:27,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:09:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194458940] [2023-11-29 07:09:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:27,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:27,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:27,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:09:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:27,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 07:09:27,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 7285 proven. 462 refuted. 0 times theorem prover too weak. 2765 trivial. 0 not checked. [2023-11-29 07:09:29,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 489 proven. 357 refuted. 0 times theorem prover too weak. 9666 trivial. 0 not checked. [2023-11-29 07:09:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940469528] [2023-11-29 07:09:31,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:09:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194458940] [2023-11-29 07:09:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194458940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:31,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 37 [2023-11-29 07:09:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888026131] [2023-11-29 07:09:31,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 07:09:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 07:09:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1038, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 07:09:31,603 INFO L87 Difference]: Start difference. First operand 532 states and 767 transitions. Second operand has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 35 states have internal predecessors, (157), 10 states have call successors, (118), 6 states have call predecessors, (118), 13 states have return successors, (119), 10 states have call predecessors, (119), 10 states have call successors, (119) [2023-11-29 07:09:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:35,489 INFO L93 Difference]: Finished difference Result 1352 states and 1893 transitions. [2023-11-29 07:09:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 07:09:35,490 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 35 states have internal predecessors, (157), 10 states have call successors, (118), 6 states have call predecessors, (118), 13 states have return successors, (119), 10 states have call predecessors, (119), 10 states have call successors, (119) Word has length 442 [2023-11-29 07:09:35,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:35,495 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 07:09:35,496 INFO L226 Difference]: Without dead ends: 902 [2023-11-29 07:09:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1629, Invalid=4691, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 07:09:35,500 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1103 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:35,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1350 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1344 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 07:09:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-29 07:09:35,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 538. [2023-11-29 07:09:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 322 states have (on average 1.2391304347826086) internal successors, (399), 323 states have internal predecessors, (399), 185 states have call successors, (185), 30 states have call predecessors, (185), 30 states have return successors, (185), 184 states have call predecessors, (185), 185 states have call successors, (185) [2023-11-29 07:09:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 769 transitions. [2023-11-29 07:09:35,661 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 769 transitions. Word has length 442 [2023-11-29 07:09:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:35,662 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 769 transitions. [2023-11-29 07:09:35,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.361111111111111) internal successors, (157), 35 states have internal predecessors, (157), 10 states have call successors, (118), 6 states have call predecessors, (118), 13 states have return successors, (119), 10 states have call predecessors, (119), 10 states have call successors, (119) [2023-11-29 07:09:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 769 transitions. [2023-11-29 07:09:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-11-29 07:09:35,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:35,666 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:35,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 07:09:35,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 07:09:35,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:35,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1913279542, now seen corresponding path program 1 times [2023-11-29 07:09:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:35,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205972167] [2023-11-29 07:09:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:35,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:35,914 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:09:35,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061672617] [2023-11-29 07:09:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:35,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:35,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:35,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:35,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:09:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:36,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 07:09:36,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:09:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 4678 proven. 69 refuted. 0 times theorem prover too weak. 5765 trivial. 0 not checked. [2023-11-29 07:09:36,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:09:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 147 proven. 69 refuted. 0 times theorem prover too weak. 10296 trivial. 0 not checked. [2023-11-29 07:09:37,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:09:37,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205972167] [2023-11-29 07:09:37,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:09:37,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061672617] [2023-11-29 07:09:37,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061672617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:09:37,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:09:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 07:09:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849869197] [2023-11-29 07:09:37,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:09:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:09:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:09:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:09:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:09:37,216 INFO L87 Difference]: Start difference. First operand 538 states and 769 transitions. Second operand has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 4 states have call successors, (146), 3 states have call predecessors, (146), 5 states have return successors, (146), 4 states have call predecessors, (146), 4 states have call successors, (146) [2023-11-29 07:09:38,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:09:38,653 INFO L93 Difference]: Finished difference Result 1716 states and 2461 transitions. [2023-11-29 07:09:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:09:38,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 4 states have call successors, (146), 3 states have call predecessors, (146), 5 states have return successors, (146), 4 states have call predecessors, (146), 4 states have call successors, (146) Word has length 442 [2023-11-29 07:09:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:09:38,662 INFO L225 Difference]: With dead ends: 1716 [2023-11-29 07:09:38,662 INFO L226 Difference]: Without dead ends: 1260 [2023-11-29 07:09:38,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 872 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:09:38,664 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 491 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 07:09:38,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 915 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 07:09:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-29 07:09:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 956. [2023-11-29 07:09:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 568 states have (on average 1.221830985915493) internal successors, (694), 569 states have internal predecessors, (694), 331 states have call successors, (331), 56 states have call predecessors, (331), 56 states have return successors, (331), 330 states have call predecessors, (331), 331 states have call successors, (331) [2023-11-29 07:09:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1356 transitions. [2023-11-29 07:09:38,981 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1356 transitions. Word has length 442 [2023-11-29 07:09:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:09:38,982 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1356 transitions. [2023-11-29 07:09:38,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.666666666666666) internal successors, (152), 12 states have internal predecessors, (152), 4 states have call successors, (146), 3 states have call predecessors, (146), 5 states have return successors, (146), 4 states have call predecessors, (146), 4 states have call successors, (146) [2023-11-29 07:09:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1356 transitions. [2023-11-29 07:09:38,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2023-11-29 07:09:38,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:09:38,985 INFO L195 NwaCegarLoop]: trace histogram [73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:38,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:09:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 07:09:39,186 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:09:39,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:09:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1405708281, now seen corresponding path program 1 times [2023-11-29 07:09:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:09:39,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638797320] [2023-11-29 07:09:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:09:39,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:09:39,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234307720] [2023-11-29 07:09:39,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:09:39,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:09:39,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:09:39,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:09:39,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6ff2ef4-37df-49bf-9fab-04f8f1822238/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:09:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:09:39,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 07:09:39,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:10,268 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:10:30,614 WARN L293 SmtUtils]: Spent 17.31s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:10:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 10512 backedges. 7698 proven. 297 refuted. 0 times theorem prover too weak. 2517 trivial. 0 not checked. [2023-11-29 07:10:30,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:59,910 WARN L293 SmtUtils]: Spent 10.27s on a formula simplification. DAG size of input: 70 DAG size of output: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:11:15,446 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:32,380 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:11:39,461 WARN L293 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:04,754 WARN L293 SmtUtils]: Spent 52.08s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 07:13:19,413 WARN L293 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:43,675 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:13:54,925 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:14,165 WARN L293 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:15:53,787 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:08,021 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:29,344 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:16:59,086 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:06,303 WARN L293 SmtUtils]: Spent 7.18s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:25,817 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:17:52,994 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:06,969 WARN L293 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:27,974 WARN L293 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:51,360 WARN L293 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:18:59,454 WARN L293 SmtUtils]: Spent 7.94s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:11,478 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:29,601 WARN L293 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:36,870 WARN L293 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:19:57,649 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:03,612 WARN L293 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:44,653 WARN L293 SmtUtils]: Spent 7.98s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:20:55,339 WARN L293 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:21:19,453 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:21:26,728 WARN L293 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:21:38,798 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:21:50,249 WARN L293 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:22:16,104 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:22:48,748 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 07:23:12,855 WARN L293 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)