./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/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_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/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_13173927-8670-4e93-8150-c40b6b5deb53/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 4c96b2c0a4805af872684054e348cbdc2f3aecf564e5f15847ec776b279df9b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:15:09,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:15:09,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:15:09,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:15:09,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:15:09,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:15:09,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:15:09,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:15:09,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:15:09,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:15:09,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:15:09,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:15:09,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:15:09,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:15:09,155 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:15:09,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:15:09,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:15:09,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:15:09,158 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:15:09,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:15:09,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:15:09,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:15:09,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:15:09,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:15:09,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:15:09,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:15:09,162 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:15:09,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:15:09,163 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:15:09,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:15:09,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:15:09,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:09,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:15:09,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:15:09,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:15:09,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:15:09,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:15:09,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:15:09,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:15:09,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:15:09,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:15:09,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:15:09,167 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_13173927-8670-4e93-8150-c40b6b5deb53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c96b2c0a4805af872684054e348cbdc2f3aecf564e5f15847ec776b279df9b4 [2023-11-29 00:15:09,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:15:09,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:15:09,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:15:09,423 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:15:09,423 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:15:09,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i [2023-11-29 00:15:12,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:15:12,475 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:15:12,476 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i [2023-11-29 00:15:12,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/data/49bb1f3a0/ff991064b37f447096c6de7ec79ddd9f/FLAG6487bf8bc [2023-11-29 00:15:12,508 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/data/49bb1f3a0/ff991064b37f447096c6de7ec79ddd9f [2023-11-29 00:15:12,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:15:12,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:15:12,514 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:12,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:15:12,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:15:12,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:12" (1/1) ... [2023-11-29 00:15:12,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37632f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:12, skipping insertion in model container [2023-11-29 00:15:12,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:15:12" (1/1) ... [2023-11-29 00:15:12,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:15:12,730 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_13173927-8670-4e93-8150-c40b6b5deb53/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i[916,929] [2023-11-29 00:15:12,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:12,923 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:15:12,935 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_13173927-8670-4e93-8150-c40b6b5deb53/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-91.i[916,929] [2023-11-29 00:15:13,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:15:13,042 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:15:13,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13 WrapperNode [2023-11-29 00:15:13,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:15:13,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:13,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:15:13,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:15:13,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,145 INFO L138 Inliner]: procedures = 26, calls = 144, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 893 [2023-11-29 00:15:13,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:15:13,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:15:13,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:15:13,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:15:13,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,257 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 00:15:13,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,317 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:15:13,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:15:13,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:15:13,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:15:13,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (1/1) ... [2023-11-29 00:15:13,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:15:13,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:13,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:15:13,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:15:13,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:15:13,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:15:13,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:15:13,559 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:15:13,561 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:15:14,436 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:15:14,486 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:15:14,487 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:15:14,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:14 BoogieIcfgContainer [2023-11-29 00:15:14,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:15:14,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:15:14,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:15:14,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:15:14,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:15:12" (1/3) ... [2023-11-29 00:15:14,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565b76f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:14, skipping insertion in model container [2023-11-29 00:15:14,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:15:13" (2/3) ... [2023-11-29 00:15:14,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565b76f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:15:14, skipping insertion in model container [2023-11-29 00:15:14,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:15:14" (3/3) ... [2023-11-29 00:15:14,496 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-91.i [2023-11-29 00:15:14,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:15:14,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:15:14,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:15:14,566 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;@725051d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:15:14,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:15:14,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 222 states have (on average 1.59009009009009) internal successors, (353), 223 states have internal predecessors, (353), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-29 00:15:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-29 00:15:14,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:14,617 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:14,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:14,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash 943000576, now seen corresponding path program 1 times [2023-11-29 00:15:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:14,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597848572] [2023-11-29 00:15:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:15,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:15,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597848572] [2023-11-29 00:15:15,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 00:15:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833662624] [2023-11-29 00:15:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:15,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:15,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:15,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:15,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:15:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:15,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:15:15,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 33800 trivial. 0 not checked. [2023-11-29 00:15:15,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833662624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:15,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:15:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623215643] [2023-11-29 00:15:15,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:15:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:15:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:15:15,722 INFO L87 Difference]: Start difference. First operand has 356 states, 222 states have (on average 1.59009009009009) internal successors, (353), 223 states have internal predecessors, (353), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) [2023-11-29 00:15:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:15,846 INFO L93 Difference]: Finished difference Result 709 states and 1359 transitions. [2023-11-29 00:15:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:15:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) Word has length 815 [2023-11-29 00:15:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:15,862 INFO L225 Difference]: With dead ends: 709 [2023-11-29 00:15:15,862 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 00:15:15,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 814 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 00:15:15,873 INFO L413 NwaCegarLoop]: 602 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, 602 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 00:15:15,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 00:15:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-11-29 00:15:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 221 states have (on average 1.5520361990950227) internal successors, (343), 221 states have internal predecessors, (343), 131 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 131 states have call predecessors, (131), 131 states have call successors, (131) [2023-11-29 00:15:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 605 transitions. [2023-11-29 00:15:15,981 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 605 transitions. Word has length 815 [2023-11-29 00:15:15,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:15,982 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 605 transitions. [2023-11-29 00:15:15,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (131), 2 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 2 states have call successors, (131) [2023-11-29 00:15:15,983 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 605 transitions. [2023-11-29 00:15:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-29 00:15:16,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:16,017 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:16,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:16,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 00:15:16,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:16,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1344482194, now seen corresponding path program 1 times [2023-11-29 00:15:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766298315] [2023-11-29 00:15:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:16,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:16,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274669627] [2023-11-29 00:15:16,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:16,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:16,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:16,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:15:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:16,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:15:16,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:18,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:18,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766298315] [2023-11-29 00:15:18,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274669627] [2023-11-29 00:15:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274669627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:18,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572938197] [2023-11-29 00:15:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:18,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:18,134 INFO L87 Difference]: Start difference. First operand 354 states and 605 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:18,717 INFO L93 Difference]: Finished difference Result 1265 states and 2154 transitions. [2023-11-29 00:15:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:15:18,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 815 [2023-11-29 00:15:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:18,731 INFO L225 Difference]: With dead ends: 1265 [2023-11-29 00:15:18,731 INFO L226 Difference]: Without dead ends: 912 [2023-11-29 00:15:18,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:18,735 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 656 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:18,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1520 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:15:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-11-29 00:15:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 907. [2023-11-29 00:15:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 554 states have (on average 1.5306859205776173) internal successors, (848), 555 states have internal predecessors, (848), 349 states have call successors, (349), 3 states have call predecessors, (349), 3 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) [2023-11-29 00:15:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1546 transitions. [2023-11-29 00:15:18,960 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1546 transitions. Word has length 815 [2023-11-29 00:15:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:18,963 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1546 transitions. [2023-11-29 00:15:18,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:18,964 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1546 transitions. [2023-11-29 00:15:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:18,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:18,974 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:18,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:15:19,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 00:15:19,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:19,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1462368570, now seen corresponding path program 1 times [2023-11-29 00:15:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801832779] [2023-11-29 00:15:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:19,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:19,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382003616] [2023-11-29 00:15:19,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:19,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:19,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:19,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:15:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:19,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:19,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:19,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:19,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:19,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801832779] [2023-11-29 00:15:19,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:19,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382003616] [2023-11-29 00:15:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382003616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:19,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:19,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337362161] [2023-11-29 00:15:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:19,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:19,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:19,924 INFO L87 Difference]: Start difference. First operand 907 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:20,013 INFO L93 Difference]: Finished difference Result 2280 states and 3914 transitions. [2023-11-29 00:15:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:20,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:20,027 INFO L225 Difference]: With dead ends: 2280 [2023-11-29 00:15:20,027 INFO L226 Difference]: Without dead ends: 1374 [2023-11-29 00:15:20,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:20,032 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 252 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:20,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1254 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-11-29 00:15:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1369. [2023-11-29 00:15:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 941 states have (on average 1.6131774707757705) internal successors, (1518), 945 states have internal predecessors, (1518), 421 states have call successors, (421), 6 states have call predecessors, (421), 6 states have return successors, (421), 417 states have call predecessors, (421), 421 states have call successors, (421) [2023-11-29 00:15:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2360 transitions. [2023-11-29 00:15:20,244 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2360 transitions. Word has length 816 [2023-11-29 00:15:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:20,247 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 2360 transitions. [2023-11-29 00:15:20,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2360 transitions. [2023-11-29 00:15:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:20,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:20,267 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:20,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:15:20,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 00:15:20,468 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:20,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1811530372, now seen corresponding path program 1 times [2023-11-29 00:15:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562391148] [2023-11-29 00:15:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:20,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151221385] [2023-11-29 00:15:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:20,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:15:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:21,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:21,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:21,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:21,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562391148] [2023-11-29 00:15:21,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:21,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151221385] [2023-11-29 00:15:21,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151221385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358211846] [2023-11-29 00:15:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:21,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:21,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:21,121 INFO L87 Difference]: Start difference. First operand 1369 states and 2360 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:21,300 INFO L93 Difference]: Finished difference Result 3651 states and 6301 transitions. [2023-11-29 00:15:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:21,319 INFO L225 Difference]: With dead ends: 3651 [2023-11-29 00:15:21,319 INFO L226 Difference]: Without dead ends: 2283 [2023-11-29 00:15:21,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:21,326 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 304 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:21,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1290 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:21,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2023-11-29 00:15:21,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2278. [2023-11-29 00:15:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1646 states have (on average 1.6306196840826246) internal successors, (2684), 1656 states have internal predecessors, (2684), 619 states have call successors, (619), 12 states have call predecessors, (619), 12 states have return successors, (619), 609 states have call predecessors, (619), 619 states have call successors, (619) [2023-11-29 00:15:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3922 transitions. [2023-11-29 00:15:21,538 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3922 transitions. Word has length 816 [2023-11-29 00:15:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:21,539 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3922 transitions. [2023-11-29 00:15:21,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3922 transitions. [2023-11-29 00:15:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:21,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:21,548 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:21,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:15:21,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:21,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:21,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2049707838, now seen corresponding path program 1 times [2023-11-29 00:15:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:21,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884715802] [2023-11-29 00:15:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:21,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:21,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:21,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539782965] [2023-11-29 00:15:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:21,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:21,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:21,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:21,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:15:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:22,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:22,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:22,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884715802] [2023-11-29 00:15:22,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:22,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539782965] [2023-11-29 00:15:22,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539782965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:22,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:22,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293091867] [2023-11-29 00:15:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:22,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:22,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:22,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:22,416 INFO L87 Difference]: Start difference. First operand 2278 states and 3922 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:22,675 INFO L93 Difference]: Finished difference Result 6736 states and 11580 transitions. [2023-11-29 00:15:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:22,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:22,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:22,709 INFO L225 Difference]: With dead ends: 6736 [2023-11-29 00:15:22,710 INFO L226 Difference]: Without dead ends: 4459 [2023-11-29 00:15:22,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:22,720 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 543 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:22,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1239 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2023-11-29 00:15:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3148. [2023-11-29 00:15:23,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 2516 states have (on average 1.6995230524642289) internal successors, (4276), 2526 states have internal predecessors, (4276), 619 states have call successors, (619), 12 states have call predecessors, (619), 12 states have return successors, (619), 609 states have call predecessors, (619), 619 states have call successors, (619) [2023-11-29 00:15:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5514 transitions. [2023-11-29 00:15:23,196 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5514 transitions. Word has length 816 [2023-11-29 00:15:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:23,198 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5514 transitions. [2023-11-29 00:15:23,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5514 transitions. [2023-11-29 00:15:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:23,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:23,219 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:23,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:15:23,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:23,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:23,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2022642236, now seen corresponding path program 1 times [2023-11-29 00:15:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595852803] [2023-11-29 00:15:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:23,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:23,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399485397] [2023-11-29 00:15:23,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:23,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:23,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:23,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:23,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:15:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:23,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:23,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:24,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595852803] [2023-11-29 00:15:24,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:24,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399485397] [2023-11-29 00:15:24,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399485397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:24,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:24,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537574805] [2023-11-29 00:15:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:24,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:24,092 INFO L87 Difference]: Start difference. First operand 3148 states and 5514 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:24,415 INFO L93 Difference]: Finished difference Result 7606 states and 13136 transitions. [2023-11-29 00:15:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:24,452 INFO L225 Difference]: With dead ends: 7606 [2023-11-29 00:15:24,452 INFO L226 Difference]: Without dead ends: 4459 [2023-11-29 00:15:24,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:24,464 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 511 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:24,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1659 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4459 states. [2023-11-29 00:15:24,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4459 to 3148. [2023-11-29 00:15:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 2516 states have (on average 1.685214626391097) internal successors, (4240), 2526 states have internal predecessors, (4240), 619 states have call successors, (619), 12 states have call predecessors, (619), 12 states have return successors, (619), 609 states have call predecessors, (619), 619 states have call successors, (619) [2023-11-29 00:15:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5478 transitions. [2023-11-29 00:15:24,899 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5478 transitions. Word has length 816 [2023-11-29 00:15:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:24,900 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5478 transitions. [2023-11-29 00:15:24,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5478 transitions. [2023-11-29 00:15:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:24,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:24,910 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:24,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:25,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:25,111 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:25,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1454676610, now seen corresponding path program 1 times [2023-11-29 00:15:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:25,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889393862] [2023-11-29 00:15:25,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:25,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:25,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:25,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705359737] [2023-11-29 00:15:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:25,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:25,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:25,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:25,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:15:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:25,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:25,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:25,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889393862] [2023-11-29 00:15:25,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:25,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705359737] [2023-11-29 00:15:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705359737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:25,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429000199] [2023-11-29 00:15:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:25,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:25,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:25,796 INFO L87 Difference]: Start difference. First operand 3148 states and 5478 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:26,038 INFO L93 Difference]: Finished difference Result 8893 states and 15510 transitions. [2023-11-29 00:15:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:26,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:26,072 INFO L225 Difference]: With dead ends: 8893 [2023-11-29 00:15:26,072 INFO L226 Difference]: Without dead ends: 5746 [2023-11-29 00:15:26,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:26,081 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 266 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:26,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1264 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2023-11-29 00:15:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5738. [2023-11-29 00:15:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5738 states, 4770 states have (on average 1.6964360587002096) internal successors, (8092), 4792 states have internal predecessors, (8092), 943 states have call successors, (943), 24 states have call predecessors, (943), 24 states have return successors, (943), 921 states have call predecessors, (943), 943 states have call successors, (943) [2023-11-29 00:15:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 9978 transitions. [2023-11-29 00:15:26,536 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 9978 transitions. Word has length 816 [2023-11-29 00:15:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:26,538 INFO L495 AbstractCegarLoop]: Abstraction has 5738 states and 9978 transitions. [2023-11-29 00:15:26,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:26,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 9978 transitions. [2023-11-29 00:15:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:26,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:26,552 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:26,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:15:26,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:26,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:26,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:26,754 INFO L85 PathProgramCache]: Analyzing trace with hash -622660288, now seen corresponding path program 1 times [2023-11-29 00:15:26,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:26,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504392660] [2023-11-29 00:15:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:26,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:26,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904363362] [2023-11-29 00:15:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:26,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:26,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:26,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:26,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:15:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:27,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:27,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:27,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:27,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504392660] [2023-11-29 00:15:27,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:27,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904363362] [2023-11-29 00:15:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904363362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:27,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446220092] [2023-11-29 00:15:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:27,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:27,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:27,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:27,424 INFO L87 Difference]: Start difference. First operand 5738 states and 9978 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:27,705 INFO L93 Difference]: Finished difference Result 11507 states and 19980 transitions. [2023-11-29 00:15:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:27,740 INFO L225 Difference]: With dead ends: 11507 [2023-11-29 00:15:27,740 INFO L226 Difference]: Without dead ends: 5770 [2023-11-29 00:15:27,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:27,755 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 259 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:27,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1347 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2023-11-29 00:15:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 4784. [2023-11-29 00:15:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4146 states have (on average 1.7120115774240232) internal successors, (7098), 4156 states have internal predecessors, (7098), 619 states have call successors, (619), 18 states have call predecessors, (619), 18 states have return successors, (619), 609 states have call predecessors, (619), 619 states have call successors, (619) [2023-11-29 00:15:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 8336 transitions. [2023-11-29 00:15:28,156 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 8336 transitions. Word has length 816 [2023-11-29 00:15:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:28,158 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 8336 transitions. [2023-11-29 00:15:28,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 8336 transitions. [2023-11-29 00:15:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:28,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:28,174 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:28,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:15:28,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 00:15:28,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:28,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash -560620674, now seen corresponding path program 1 times [2023-11-29 00:15:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:28,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506298850] [2023-11-29 00:15:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:28,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:28,456 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638327674] [2023-11-29 00:15:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:28,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:28,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:28,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:15:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:28,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:28,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:28,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506298850] [2023-11-29 00:15:28,989 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:28,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638327674] [2023-11-29 00:15:28,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638327674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:28,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:28,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:28,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165772629] [2023-11-29 00:15:28,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:28,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:28,993 INFO L87 Difference]: Start difference. First operand 4784 states and 8336 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:29,344 INFO L93 Difference]: Finished difference Result 14350 states and 25006 transitions. [2023-11-29 00:15:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:29,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:29,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:29,374 INFO L225 Difference]: With dead ends: 14350 [2023-11-29 00:15:29,374 INFO L226 Difference]: Without dead ends: 9567 [2023-11-29 00:15:29,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:29,387 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 599 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:29,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1194 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9567 states. [2023-11-29 00:15:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9567 to 9533. [2023-11-29 00:15:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9533 states, 8258 states have (on average 1.7062242673770889) internal successors, (14090), 8278 states have internal predecessors, (14090), 1238 states have call successors, (1238), 36 states have call predecessors, (1238), 36 states have return successors, (1238), 1218 states have call predecessors, (1238), 1238 states have call successors, (1238) [2023-11-29 00:15:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9533 states to 9533 states and 16566 transitions. [2023-11-29 00:15:30,160 INFO L78 Accepts]: Start accepts. Automaton has 9533 states and 16566 transitions. Word has length 816 [2023-11-29 00:15:30,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:30,161 INFO L495 AbstractCegarLoop]: Abstraction has 9533 states and 16566 transitions. [2023-11-29 00:15:30,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:30,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9533 states and 16566 transitions. [2023-11-29 00:15:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-29 00:15:30,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:30,183 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:30,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:15:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:30,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:30,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 80935870, now seen corresponding path program 1 times [2023-11-29 00:15:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69102573] [2023-11-29 00:15:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:30,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:30,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185339202] [2023-11-29 00:15:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:30,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:30,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:30,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:30,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:15:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:30,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:15:30,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:31,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:31,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69102573] [2023-11-29 00:15:31,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185339202] [2023-11-29 00:15:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185339202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:15:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335613807] [2023-11-29 00:15:31,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:15:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:31,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:15:31,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:15:31,031 INFO L87 Difference]: Start difference. First operand 9533 states and 16566 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:31,690 INFO L93 Difference]: Finished difference Result 28525 states and 49552 transitions. [2023-11-29 00:15:31,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:15:31,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 816 [2023-11-29 00:15:31,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:31,745 INFO L225 Difference]: With dead ends: 28525 [2023-11-29 00:15:31,745 INFO L226 Difference]: Without dead ends: 18993 [2023-11-29 00:15:31,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 814 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 00:15:31,768 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 597 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:31,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1787 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:15:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18993 states. [2023-11-29 00:15:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18993 to 9581. [2023-11-29 00:15:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9581 states, 8306 states have (on average 1.7021430291355646) internal successors, (14138), 8326 states have internal predecessors, (14138), 1238 states have call successors, (1238), 36 states have call predecessors, (1238), 36 states have return successors, (1238), 1218 states have call predecessors, (1238), 1238 states have call successors, (1238) [2023-11-29 00:15:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9581 states to 9581 states and 16614 transitions. [2023-11-29 00:15:32,742 INFO L78 Accepts]: Start accepts. Automaton has 9581 states and 16614 transitions. Word has length 816 [2023-11-29 00:15:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:32,744 INFO L495 AbstractCegarLoop]: Abstraction has 9581 states and 16614 transitions. [2023-11-29 00:15:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:32,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9581 states and 16614 transitions. [2023-11-29 00:15:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-11-29 00:15:32,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:32,762 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:32,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:15:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:15:32,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:32,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1837461114, now seen corresponding path program 1 times [2023-11-29 00:15:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042419080] [2023-11-29 00:15:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:33,049 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391845554] [2023-11-29 00:15:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:33,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:33,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:33,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:33,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:15:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:33,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:15:33,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:33,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:33,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:33,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042419080] [2023-11-29 00:15:33,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:33,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391845554] [2023-11-29 00:15:33,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391845554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:33,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:33,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:15:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972721937] [2023-11-29 00:15:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:33,596 INFO L87 Difference]: Start difference. First operand 9581 states and 16614 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:34,312 INFO L93 Difference]: Finished difference Result 25803 states and 44432 transitions. [2023-11-29 00:15:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:15:34,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 817 [2023-11-29 00:15:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:34,347 INFO L225 Difference]: With dead ends: 25803 [2023-11-29 00:15:34,347 INFO L226 Difference]: Without dead ends: 16223 [2023-11-29 00:15:34,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:15:34,365 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 275 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:34,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1999 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:15:34,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16223 states. [2023-11-29 00:15:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16223 to 16151. [2023-11-29 00:15:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16151 states, 14012 states have (on average 1.6648586925492435) internal successors, (23328), 14056 states have internal predecessors, (23328), 2066 states have call successors, (2066), 72 states have call predecessors, (2066), 72 states have return successors, (2066), 2022 states have call predecessors, (2066), 2066 states have call successors, (2066) [2023-11-29 00:15:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16151 states to 16151 states and 27460 transitions. [2023-11-29 00:15:35,236 INFO L78 Accepts]: Start accepts. Automaton has 16151 states and 27460 transitions. Word has length 817 [2023-11-29 00:15:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:35,237 INFO L495 AbstractCegarLoop]: Abstraction has 16151 states and 27460 transitions. [2023-11-29 00:15:35,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16151 states and 27460 transitions. [2023-11-29 00:15:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-11-29 00:15:35,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:35,256 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:35,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:15:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:35,457 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:35,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2023777096, now seen corresponding path program 1 times [2023-11-29 00:15:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:35,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640233907] [2023-11-29 00:15:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:35,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:35,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787739870] [2023-11-29 00:15:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:35,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:35,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:15:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:36,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:15:36,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:15:36,114 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:15:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640233907] [2023-11-29 00:15:36,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787739870] [2023-11-29 00:15:36,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787739870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:15:36,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:15:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:15:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391120693] [2023-11-29 00:15:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:15:36,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:15:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:36,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:15:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:36,118 INFO L87 Difference]: Start difference. First operand 16151 states and 27460 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:37,946 INFO L93 Difference]: Finished difference Result 58053 states and 97869 transitions. [2023-11-29 00:15:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:15:37,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 817 [2023-11-29 00:15:37,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:38,017 INFO L225 Difference]: With dead ends: 58053 [2023-11-29 00:15:38,017 INFO L226 Difference]: Without dead ends: 41903 [2023-11-29 00:15:38,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:15:38,043 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 595 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:38,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1448 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:15:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41903 states. [2023-11-29 00:15:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41903 to 19127. [2023-11-29 00:15:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19127 states, 16988 states have (on average 1.6896632917353427) internal successors, (28704), 17032 states have internal predecessors, (28704), 2066 states have call successors, (2066), 72 states have call predecessors, (2066), 72 states have return successors, (2066), 2022 states have call predecessors, (2066), 2066 states have call successors, (2066) [2023-11-29 00:15:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19127 states to 19127 states and 32836 transitions. [2023-11-29 00:15:39,399 INFO L78 Accepts]: Start accepts. Automaton has 19127 states and 32836 transitions. Word has length 817 [2023-11-29 00:15:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:39,400 INFO L495 AbstractCegarLoop]: Abstraction has 19127 states and 32836 transitions. [2023-11-29 00:15:39,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:15:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19127 states and 32836 transitions. [2023-11-29 00:15:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2023-11-29 00:15:39,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:39,420 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:39,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:15:39,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:39,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:39,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash -636991686, now seen corresponding path program 1 times [2023-11-29 00:15:39,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:39,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445297873] [2023-11-29 00:15:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:39,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181295206] [2023-11-29 00:15:39,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:39,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:39,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:39,686 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:39,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:15:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:40,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:40,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 12190 proven. 300 refuted. 0 times theorem prover too weak. 21570 trivial. 0 not checked. [2023-11-29 00:15:40,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 90 proven. 300 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:41,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:41,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445297873] [2023-11-29 00:15:41,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:41,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181295206] [2023-11-29 00:15:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181295206] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:41,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:15:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837327889] [2023-11-29 00:15:41,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:41,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:41,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:41,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:41,475 INFO L87 Difference]: Start difference. First operand 19127 states and 32836 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (231), 2 states have call predecessors, (231), 4 states have return successors, (232), 2 states have call predecessors, (232), 2 states have call successors, (232) [2023-11-29 00:15:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:42,870 INFO L93 Difference]: Finished difference Result 31762 states and 54017 transitions. [2023-11-29 00:15:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:15:42,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (231), 2 states have call predecessors, (231), 4 states have return successors, (232), 2 states have call predecessors, (232), 2 states have call successors, (232) Word has length 817 [2023-11-29 00:15:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:42,888 INFO L225 Difference]: With dead ends: 31762 [2023-11-29 00:15:42,888 INFO L226 Difference]: Without dead ends: 12636 [2023-11-29 00:15:42,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1636 GetRequests, 1626 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:15:42,901 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 570 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:42,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 1170 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:15:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12636 states. [2023-11-29 00:15:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12636 to 12439. [2023-11-29 00:15:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12439 states, 10276 states have (on average 1.6356558972362787) internal successors, (16808), 10320 states have internal predecessors, (16808), 2066 states have call successors, (2066), 96 states have call predecessors, (2066), 96 states have return successors, (2066), 2022 states have call predecessors, (2066), 2066 states have call successors, (2066) [2023-11-29 00:15:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 20940 transitions. [2023-11-29 00:15:43,653 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 20940 transitions. Word has length 817 [2023-11-29 00:15:43,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:43,653 INFO L495 AbstractCegarLoop]: Abstraction has 12439 states and 20940 transitions. [2023-11-29 00:15:43,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (231), 2 states have call predecessors, (231), 4 states have return successors, (232), 2 states have call predecessors, (232), 2 states have call successors, (232) [2023-11-29 00:15:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 20940 transitions. [2023-11-29 00:15:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2023-11-29 00:15:43,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:43,667 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:43,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:15:43,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:43,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:43,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1306653699, now seen corresponding path program 1 times [2023-11-29 00:15:43,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:43,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710918040] [2023-11-29 00:15:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:43,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331336908] [2023-11-29 00:15:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:43,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:43,945 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:43,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:15:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:44,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:44,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 14998 proven. 264 refuted. 0 times theorem prover too weak. 18798 trivial. 0 not checked. [2023-11-29 00:15:45,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 126 proven. 264 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710918040] [2023-11-29 00:15:45,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331336908] [2023-11-29 00:15:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331336908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:45,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:15:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080284100] [2023-11-29 00:15:45,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:45,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:45,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:45,873 INFO L87 Difference]: Start difference. First operand 12439 states and 20940 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) [2023-11-29 00:15:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:46,899 INFO L93 Difference]: Finished difference Result 19313 states and 32499 transitions. [2023-11-29 00:15:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:15:46,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) Word has length 818 [2023-11-29 00:15:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:46,911 INFO L225 Difference]: With dead ends: 19313 [2023-11-29 00:15:46,911 INFO L226 Difference]: Without dead ends: 6875 [2023-11-29 00:15:46,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1628 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:15:46,924 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 585 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:46,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1091 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:15:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6875 states. [2023-11-29 00:15:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6875 to 6803. [2023-11-29 00:15:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6803 states, 5468 states have (on average 1.608632040965618) internal successors, (8796), 5488 states have internal predecessors, (8796), 1274 states have call successors, (1274), 60 states have call predecessors, (1274), 60 states have return successors, (1274), 1254 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-11-29 00:15:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 11344 transitions. [2023-11-29 00:15:47,533 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 11344 transitions. Word has length 818 [2023-11-29 00:15:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:47,535 INFO L495 AbstractCegarLoop]: Abstraction has 6803 states and 11344 transitions. [2023-11-29 00:15:47,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (219), 2 states have call predecessors, (219), 4 states have return successors, (220), 2 states have call predecessors, (220), 2 states have call successors, (220) [2023-11-29 00:15:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 11344 transitions. [2023-11-29 00:15:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2023-11-29 00:15:47,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:47,550 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:47,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:15:47,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:15:47,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:47,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 79592345, now seen corresponding path program 1 times [2023-11-29 00:15:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:47,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215574742] [2023-11-29 00:15:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:47,844 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:47,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512557000] [2023-11-29 00:15:47,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:47,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:47,846 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:47,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:15:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:48,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:48,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 17154 proven. 198 refuted. 0 times theorem prover too weak. 16708 trivial. 0 not checked. [2023-11-29 00:15:48,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 192 proven. 198 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:49,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215574742] [2023-11-29 00:15:49,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512557000] [2023-11-29 00:15:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512557000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:49,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:49,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 00:15:49,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55141416] [2023-11-29 00:15:49,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:49,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:15:49,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:15:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:15:49,403 INFO L87 Difference]: Start difference. First operand 6803 states and 11344 transitions. Second operand has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 3 states have call successors, (197), 2 states have call predecessors, (197), 4 states have return successors, (198), 3 states have call predecessors, (198), 3 states have call successors, (198) [2023-11-29 00:15:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:50,448 INFO L93 Difference]: Finished difference Result 13701 states and 22777 transitions. [2023-11-29 00:15:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:15:50,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 3 states have call successors, (197), 2 states have call predecessors, (197), 4 states have return successors, (198), 3 states have call predecessors, (198), 3 states have call successors, (198) Word has length 821 [2023-11-29 00:15:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:50,463 INFO L225 Difference]: With dead ends: 13701 [2023-11-29 00:15:50,463 INFO L226 Difference]: Without dead ends: 6899 [2023-11-29 00:15:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1634 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:15:50,474 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 282 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:50,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1091 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:15:50,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2023-11-29 00:15:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6827. [2023-11-29 00:15:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6827 states, 5486 states have (on average 1.6022602989427635) internal successors, (8790), 5506 states have internal predecessors, (8790), 1274 states have call successors, (1274), 66 states have call predecessors, (1274), 66 states have return successors, (1274), 1254 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-11-29 00:15:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 11338 transitions. [2023-11-29 00:15:50,942 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 11338 transitions. Word has length 821 [2023-11-29 00:15:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 6827 states and 11338 transitions. [2023-11-29 00:15:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 3 states have call successors, (197), 2 states have call predecessors, (197), 4 states have return successors, (198), 3 states have call predecessors, (198), 3 states have call successors, (198) [2023-11-29 00:15:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 11338 transitions. [2023-11-29 00:15:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:15:50,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:50,951 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:50,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:15:51,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:51,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1385996905, now seen corresponding path program 1 times [2023-11-29 00:15:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:51,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700776070] [2023-11-29 00:15:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:51,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99915886] [2023-11-29 00:15:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:51,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:51,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:51,219 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:51,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:15:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:51,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:51,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:52,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 14404 proven. 273 refuted. 0 times theorem prover too weak. 19383 trivial. 0 not checked. [2023-11-29 00:15:52,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 117 proven. 273 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700776070] [2023-11-29 00:15:52,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99915886] [2023-11-29 00:15:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99915886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:15:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883533973] [2023-11-29 00:15:52,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:52,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:52,804 INFO L87 Difference]: Start difference. First operand 6827 states and 11338 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) [2023-11-29 00:15:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:53,617 INFO L93 Difference]: Finished difference Result 13797 states and 22807 transitions. [2023-11-29 00:15:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:15:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) Word has length 822 [2023-11-29 00:15:53,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:53,633 INFO L225 Difference]: With dead ends: 13797 [2023-11-29 00:15:53,633 INFO L226 Difference]: Without dead ends: 6971 [2023-11-29 00:15:53,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1636 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:15:53,644 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 464 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1097 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:15:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6971 states. [2023-11-29 00:15:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6971 to 6875. [2023-11-29 00:15:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6875 states, 5522 states have (on average 1.5896414342629481) internal successors, (8778), 5542 states have internal predecessors, (8778), 1274 states have call successors, (1274), 78 states have call predecessors, (1274), 78 states have return successors, (1274), 1254 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-11-29 00:15:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6875 states to 6875 states and 11326 transitions. [2023-11-29 00:15:54,120 INFO L78 Accepts]: Start accepts. Automaton has 6875 states and 11326 transitions. Word has length 822 [2023-11-29 00:15:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:54,121 INFO L495 AbstractCegarLoop]: Abstraction has 6875 states and 11326 transitions. [2023-11-29 00:15:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 2 states have call predecessors, (223), 2 states have call successors, (223) [2023-11-29 00:15:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6875 states and 11326 transitions. [2023-11-29 00:15:54,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:15:54,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:54,128 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:54,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 00:15:54,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:54,329 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:54,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1323957291, now seen corresponding path program 1 times [2023-11-29 00:15:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719167945] [2023-11-29 00:15:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:54,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:54,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218970253] [2023-11-29 00:15:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:54,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:54,387 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:54,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:15:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:54,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:15:54,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 13968 proven. 279 refuted. 0 times theorem prover too weak. 19813 trivial. 0 not checked. [2023-11-29 00:15:55,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 111 proven. 279 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:55,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719167945] [2023-11-29 00:15:55,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218970253] [2023-11-29 00:15:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218970253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:55,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:15:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022930339] [2023-11-29 00:15:55,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:55,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:15:55,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:15:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:15:55,934 INFO L87 Difference]: Start difference. First operand 6875 states and 11326 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-11-29 00:15:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:56,887 INFO L93 Difference]: Finished difference Result 13917 states and 22807 transitions. [2023-11-29 00:15:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:15:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) Word has length 822 [2023-11-29 00:15:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:56,899 INFO L225 Difference]: With dead ends: 13917 [2023-11-29 00:15:56,899 INFO L226 Difference]: Without dead ends: 7043 [2023-11-29 00:15:56,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1636 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:15:56,907 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 647 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:56,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1100 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:15:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7043 states. [2023-11-29 00:15:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7043 to 6923. [2023-11-29 00:15:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6923 states, 5558 states have (on average 1.5815041381792012) internal successors, (8790), 5578 states have internal predecessors, (8790), 1274 states have call successors, (1274), 90 states have call predecessors, (1274), 90 states have return successors, (1274), 1254 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-11-29 00:15:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 11338 transitions. [2023-11-29 00:15:57,444 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 11338 transitions. Word has length 822 [2023-11-29 00:15:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:57,445 INFO L495 AbstractCegarLoop]: Abstraction has 6923 states and 11338 transitions. [2023-11-29 00:15:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (224), 2 states have call predecessors, (224), 4 states have return successors, (225), 2 states have call predecessors, (225), 2 states have call successors, (225) [2023-11-29 00:15:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 11338 transitions. [2023-11-29 00:15:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:15:57,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:57,453 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:15:57,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:15:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:15:57,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:57,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2141605741, now seen corresponding path program 1 times [2023-11-29 00:15:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:15:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759935655] [2023-11-29 00:15:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:15:57,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:15:57,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226544612] [2023-11-29 00:15:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:15:57,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:15:57,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:15:57,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:15:57,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:15:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:58,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:15:58,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 17050 proven. 210 refuted. 0 times theorem prover too weak. 16800 trivial. 0 not checked. [2023-11-29 00:15:58,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 180 proven. 210 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:15:59,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:15:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759935655] [2023-11-29 00:15:59,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:15:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226544612] [2023-11-29 00:15:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226544612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:59,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 00:15:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207497787] [2023-11-29 00:15:59,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:59,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:15:59,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:15:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:15:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:15:59,033 INFO L87 Difference]: Start difference. First operand 6923 states and 11338 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) [2023-11-29 00:16:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:00,900 INFO L93 Difference]: Finished difference Result 18553 states and 29855 transitions. [2023-11-29 00:16:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:16:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) Word has length 822 [2023-11-29 00:16:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:00,918 INFO L225 Difference]: With dead ends: 18553 [2023-11-29 00:16:00,918 INFO L226 Difference]: Without dead ends: 11631 [2023-11-29 00:16:00,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1657 GetRequests, 1637 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:16:00,928 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 932 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:00,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1930 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:16:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11631 states. [2023-11-29 00:16:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11631 to 6659. [2023-11-29 00:16:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6659 states, 5288 states have (on average 1.5597579425113464) internal successors, (8248), 5308 states have internal predecessors, (8248), 1274 states have call successors, (1274), 96 states have call predecessors, (1274), 96 states have return successors, (1274), 1254 states have call predecessors, (1274), 1274 states have call successors, (1274) [2023-11-29 00:16:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6659 states to 6659 states and 10796 transitions. [2023-11-29 00:16:01,529 INFO L78 Accepts]: Start accepts. Automaton has 6659 states and 10796 transitions. Word has length 822 [2023-11-29 00:16:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:01,529 INFO L495 AbstractCegarLoop]: Abstraction has 6659 states and 10796 transitions. [2023-11-29 00:16:01,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 2 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (202), 2 states have call predecessors, (202), 2 states have call successors, (202) [2023-11-29 00:16:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6659 states and 10796 transitions. [2023-11-29 00:16:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:16:01,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:01,540 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:01,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:16:01,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:16:01,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:01,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1621394669, now seen corresponding path program 1 times [2023-11-29 00:16:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250952842] [2023-11-29 00:16:01,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:01,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:01,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:01,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167323243] [2023-11-29 00:16:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:01,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:01,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:01,800 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:01,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:16:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:02,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:16:02,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 8604 proven. 333 refuted. 0 times theorem prover too weak. 25123 trivial. 0 not checked. [2023-11-29 00:16:03,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 57 proven. 333 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:16:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250952842] [2023-11-29 00:16:03,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:03,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167323243] [2023-11-29 00:16:03,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167323243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:03,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:03,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 00:16:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848406892] [2023-11-29 00:16:03,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:03,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:16:03,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:16:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:16:03,591 INFO L87 Difference]: Start difference. First operand 6659 states and 10796 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 2 states have call successors, (242), 2 states have call predecessors, (242), 4 states have return successors, (243), 2 states have call predecessors, (243), 2 states have call successors, (243) [2023-11-29 00:16:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:05,355 INFO L93 Difference]: Finished difference Result 16428 states and 26497 transitions. [2023-11-29 00:16:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:16:05,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 2 states have call successors, (242), 2 states have call predecessors, (242), 4 states have return successors, (243), 2 states have call predecessors, (243), 2 states have call successors, (243) Word has length 822 [2023-11-29 00:16:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:05,369 INFO L225 Difference]: With dead ends: 16428 [2023-11-29 00:16:05,369 INFO L226 Difference]: Without dead ends: 9770 [2023-11-29 00:16:05,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1654 GetRequests, 1635 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:16:05,378 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 711 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:05,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 2585 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:16:05,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9770 states. [2023-11-29 00:16:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9770 to 6932. [2023-11-29 00:16:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6932 states, 5395 states have (on average 1.5353104726598703) internal successors, (8283), 5416 states have internal predecessors, (8283), 1405 states have call successors, (1405), 131 states have call predecessors, (1405), 131 states have return successors, (1405), 1384 states have call predecessors, (1405), 1405 states have call successors, (1405) [2023-11-29 00:16:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6932 states to 6932 states and 11093 transitions. [2023-11-29 00:16:06,105 INFO L78 Accepts]: Start accepts. Automaton has 6932 states and 11093 transitions. Word has length 822 [2023-11-29 00:16:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:06,106 INFO L495 AbstractCegarLoop]: Abstraction has 6932 states and 11093 transitions. [2023-11-29 00:16:06,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 2 states have call successors, (242), 2 states have call predecessors, (242), 4 states have return successors, (243), 2 states have call predecessors, (243), 2 states have call successors, (243) [2023-11-29 00:16:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6932 states and 11093 transitions. [2023-11-29 00:16:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:16:06,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:06,113 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:06,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:16:06,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:06,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:06,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash 699306132, now seen corresponding path program 1 times [2023-11-29 00:16:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790731028] [2023-11-29 00:16:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:06,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:06,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88937163] [2023-11-29 00:16:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:06,379 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:06,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:16:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:06,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:16:06,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:16:07,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:16:07,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790731028] [2023-11-29 00:16:07,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:07,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88937163] [2023-11-29 00:16:07,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88937163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:16:07,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:16:07,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:16:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310642452] [2023-11-29 00:16:07,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:16:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:16:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:16:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:16:07,989 INFO L87 Difference]: Start difference. First operand 6932 states and 11093 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:16:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:10,976 INFO L93 Difference]: Finished difference Result 22074 states and 34968 transitions. [2023-11-29 00:16:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:16:10,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 822 [2023-11-29 00:16:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:10,999 INFO L225 Difference]: With dead ends: 22074 [2023-11-29 00:16:10,999 INFO L226 Difference]: Without dead ends: 15218 [2023-11-29 00:16:11,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:16:11,009 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 2224 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:11,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 2943 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:16:11,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15218 states. [2023-11-29 00:16:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15218 to 13243. [2023-11-29 00:16:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13243 states, 10510 states have (on average 1.5272121788772597) internal successors, (16051), 10559 states have internal predecessors, (16051), 2498 states have call successors, (2498), 234 states have call predecessors, (2498), 234 states have return successors, (2498), 2449 states have call predecessors, (2498), 2498 states have call successors, (2498) [2023-11-29 00:16:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13243 states to 13243 states and 21047 transitions. [2023-11-29 00:16:12,294 INFO L78 Accepts]: Start accepts. Automaton has 13243 states and 21047 transitions. Word has length 822 [2023-11-29 00:16:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:12,295 INFO L495 AbstractCegarLoop]: Abstraction has 13243 states and 21047 transitions. [2023-11-29 00:16:12,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:16:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 13243 states and 21047 transitions. [2023-11-29 00:16:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:16:12,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:12,303 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:12,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:16:12,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:12,504 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:12,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:12,504 INFO L85 PathProgramCache]: Analyzing trace with hash -444461160, now seen corresponding path program 1 times [2023-11-29 00:16:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967021195] [2023-11-29 00:16:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:12,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:12,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140048149] [2023-11-29 00:16:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:12,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:12,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:12,574 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:16:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:13,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:16:13,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 10998 proven. 312 refuted. 0 times theorem prover too weak. 22750 trivial. 0 not checked. [2023-11-29 00:16:13,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 78 proven. 312 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:16:14,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967021195] [2023-11-29 00:16:14,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:14,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140048149] [2023-11-29 00:16:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140048149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:14,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:14,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:16:14,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520974361] [2023-11-29 00:16:14,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:14,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:16:14,313 INFO L87 Difference]: Start difference. First operand 13243 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (235), 2 states have call predecessors, (235), 4 states have return successors, (236), 2 states have call predecessors, (236), 2 states have call successors, (236) [2023-11-29 00:16:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:16,066 INFO L93 Difference]: Finished difference Result 25278 states and 40108 transitions. [2023-11-29 00:16:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:16:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (235), 2 states have call predecessors, (235), 4 states have return successors, (236), 2 states have call predecessors, (236), 2 states have call successors, (236) Word has length 822 [2023-11-29 00:16:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:16,086 INFO L225 Difference]: With dead ends: 25278 [2023-11-29 00:16:16,086 INFO L226 Difference]: Without dead ends: 12024 [2023-11-29 00:16:16,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1636 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:16:16,100 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 443 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:16,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1168 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:16:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12024 states. [2023-11-29 00:16:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12024 to 11722. [2023-11-29 00:16:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11722 states, 9294 states have (on average 1.51689261889391) internal successors, (14098), 9331 states have internal predecessors, (14098), 2198 states have call successors, (2198), 229 states have call predecessors, (2198), 229 states have return successors, (2198), 2161 states have call predecessors, (2198), 2198 states have call successors, (2198) [2023-11-29 00:16:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11722 states to 11722 states and 18494 transitions. [2023-11-29 00:16:17,265 INFO L78 Accepts]: Start accepts. Automaton has 11722 states and 18494 transitions. Word has length 822 [2023-11-29 00:16:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:17,266 INFO L495 AbstractCegarLoop]: Abstraction has 11722 states and 18494 transitions. [2023-11-29 00:16:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (235), 2 states have call predecessors, (235), 4 states have return successors, (236), 2 states have call predecessors, (236), 2 states have call successors, (236) [2023-11-29 00:16:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 11722 states and 18494 transitions. [2023-11-29 00:16:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2023-11-29 00:16:17,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:17,273 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:17,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 00:16:17,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:17,474 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:17,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:17,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1179824814, now seen corresponding path program 1 times [2023-11-29 00:16:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986923307] [2023-11-29 00:16:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:17,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049390704] [2023-11-29 00:16:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:17,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:17,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:17,535 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:17,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:16:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:18,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:16:18,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 11610 proven. 306 refuted. 0 times theorem prover too weak. 22144 trivial. 0 not checked. [2023-11-29 00:16:18,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 84 proven. 306 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:16:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986923307] [2023-11-29 00:16:19,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:19,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049390704] [2023-11-29 00:16:19,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049390704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:19,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 00:16:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384944099] [2023-11-29 00:16:19,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:19,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:19,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:16:19,012 INFO L87 Difference]: Start difference. First operand 11722 states and 18494 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 2 states have call predecessors, (234), 2 states have call successors, (234) [2023-11-29 00:16:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:20,667 INFO L93 Difference]: Finished difference Result 23135 states and 36259 transitions. [2023-11-29 00:16:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:16:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 2 states have call predecessors, (234), 2 states have call successors, (234) Word has length 822 [2023-11-29 00:16:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:20,683 INFO L225 Difference]: With dead ends: 23135 [2023-11-29 00:16:20,683 INFO L226 Difference]: Without dead ends: 11671 [2023-11-29 00:16:20,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1636 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:16:20,695 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 536 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:20,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1162 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:16:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11671 states. [2023-11-29 00:16:21,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11671 to 11369. [2023-11-29 00:16:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11369 states, 8922 states have (on average 1.5053799596503026) internal successors, (13431), 8959 states have internal predecessors, (13431), 2198 states have call successors, (2198), 248 states have call predecessors, (2198), 248 states have return successors, (2198), 2161 states have call predecessors, (2198), 2198 states have call successors, (2198) [2023-11-29 00:16:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11369 states to 11369 states and 17827 transitions. [2023-11-29 00:16:21,904 INFO L78 Accepts]: Start accepts. Automaton has 11369 states and 17827 transitions. Word has length 822 [2023-11-29 00:16:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:21,905 INFO L495 AbstractCegarLoop]: Abstraction has 11369 states and 17827 transitions. [2023-11-29 00:16:21,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 2 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 2 states have call predecessors, (234), 2 states have call successors, (234) [2023-11-29 00:16:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11369 states and 17827 transitions. [2023-11-29 00:16:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 00:16:21,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:21,913 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:21,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 00:16:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:16:22,114 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:22,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -431904194, now seen corresponding path program 1 times [2023-11-29 00:16:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135849210] [2023-11-29 00:16:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:22,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:22,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199945267] [2023-11-29 00:16:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:22,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:22,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:22,177 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:22,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:16:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:22,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:16:22,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 13500 proven. 285 refuted. 0 times theorem prover too weak. 20275 trivial. 0 not checked. [2023-11-29 00:16:23,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:16:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135849210] [2023-11-29 00:16:24,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199945267] [2023-11-29 00:16:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199945267] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:16:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:16:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 00:16:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800279276] [2023-11-29 00:16:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:16:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:16:24,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:16:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:16:24,296 INFO L87 Difference]: Start difference. First operand 11369 states and 17827 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:16:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:16:28,958 INFO L93 Difference]: Finished difference Result 50647 states and 79359 transitions. [2023-11-29 00:16:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:16:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-11-29 00:16:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:16:29,011 INFO L225 Difference]: With dead ends: 50647 [2023-11-29 00:16:29,011 INFO L226 Difference]: Without dead ends: 39540 [2023-11-29 00:16:29,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1650 GetRequests, 1633 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:16:29,028 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 2418 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2418 SdHoareTripleChecker+Valid, 3467 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:16:29,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2418 Valid, 3467 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:16:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39540 states. [2023-11-29 00:16:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39540 to 34120. [2023-11-29 00:16:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34120 states, 27428 states have (on average 1.5152399008312674) internal successors, (41560), 27573 states have internal predecessors, (41560), 6065 states have call successors, (6065), 626 states have call predecessors, (6065), 626 states have return successors, (6065), 5920 states have call predecessors, (6065), 6065 states have call successors, (6065) [2023-11-29 00:16:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34120 states to 34120 states and 53690 transitions. [2023-11-29 00:16:32,934 INFO L78 Accepts]: Start accepts. Automaton has 34120 states and 53690 transitions. Word has length 823 [2023-11-29 00:16:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:16:32,935 INFO L495 AbstractCegarLoop]: Abstraction has 34120 states and 53690 transitions. [2023-11-29 00:16:32,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:16:32,935 INFO L276 IsEmpty]: Start isEmpty. Operand 34120 states and 53690 transitions. [2023-11-29 00:16:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 00:16:32,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:16:32,957 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:32,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:16:33,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:16:33,158 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:16:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:16:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1766083454, now seen corresponding path program 1 times [2023-11-29 00:16:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:16:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940976154] [2023-11-29 00:16:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:16:33,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:16:33,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466471752] [2023-11-29 00:16:33,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:16:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:16:33,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:16:33,233 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:16:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:16:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:16:33,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:16:33,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:16:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 18458 proven. 228 refuted. 0 times theorem prover too weak. 15374 trivial. 0 not checked. [2023-11-29 00:16:35,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 162 proven. 228 refuted. 0 times theorem prover too weak. 33670 trivial. 0 not checked. [2023-11-29 00:16:36,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:16:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940976154] [2023-11-29 00:16:36,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:16:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466471752] [2023-11-29 00:16:36,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466471752] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:16:36,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:16:36,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 00:16:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875382497] [2023-11-29 00:16:36,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:16:36,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:16:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:16:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:16:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:16:36,033 INFO L87 Difference]: Start difference. First operand 34120 states and 53690 transitions. Second operand has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 5 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 5 states have call predecessors, (218), 5 states have call successors, (218) [2023-11-29 00:17:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:02,814 INFO L93 Difference]: Finished difference Result 192342 states and 288293 transitions. [2023-11-29 00:17:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 00:17:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 5 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 5 states have call predecessors, (218), 5 states have call successors, (218) Word has length 823 [2023-11-29 00:17:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:03,156 INFO L225 Difference]: With dead ends: 192342 [2023-11-29 00:17:03,157 INFO L226 Difference]: Without dead ends: 158484 [2023-11-29 00:17:03,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1692 GetRequests, 1637 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=834, Invalid=2358, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 00:17:03,218 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 2806 mSDsluCounter, 3976 mSDsCounter, 0 mSdLazyCounter, 4870 mSolverCounterSat, 1633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4736 SdHoareTripleChecker+Invalid, 6503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1633 IncrementalHoareTripleChecker+Valid, 4870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:03,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4736 Invalid, 6503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1633 Valid, 4870 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 00:17:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158484 states. [2023-11-29 00:17:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158484 to 142396. [2023-11-29 00:17:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142396 states, 106452 states have (on average 1.4193063540375004) internal successors, (151088), 107293 states have internal predecessors, (151088), 31391 states have call successors, (31391), 4552 states have call predecessors, (31391), 4552 states have return successors, (31391), 30550 states have call predecessors, (31391), 31391 states have call successors, (31391) [2023-11-29 00:17:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142396 states to 142396 states and 213870 transitions. [2023-11-29 00:17:25,581 INFO L78 Accepts]: Start accepts. Automaton has 142396 states and 213870 transitions. Word has length 823 [2023-11-29 00:17:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:17:25,582 INFO L495 AbstractCegarLoop]: Abstraction has 142396 states and 213870 transitions. [2023-11-29 00:17:25,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.125) internal successors, (290), 16 states have internal predecessors, (290), 5 states have call successors, (218), 3 states have call predecessors, (218), 5 states have return successors, (218), 5 states have call predecessors, (218), 5 states have call successors, (218) [2023-11-29 00:17:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 142396 states and 213870 transitions. [2023-11-29 00:17:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 00:17:25,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:17:25,618 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:17:25,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 00:17:25,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:17:25,819 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:17:25,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:17:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1371716668, now seen corresponding path program 1 times [2023-11-29 00:17:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:17:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055293229] [2023-11-29 00:17:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:17:25,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:17:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029060705] [2023-11-29 00:17:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:17:25,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:17:25,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:17:25,928 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:17:25,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:17:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:17:26,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:17:26,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:17:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2023-11-29 00:17:26,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:17:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:17:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055293229] [2023-11-29 00:17:26,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:17:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029060705] [2023-11-29 00:17:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029060705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:17:26,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:17:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:17:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810442703] [2023-11-29 00:17:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:17:26,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:17:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:17:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:17:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:17:26,810 INFO L87 Difference]: Start difference. First operand 142396 states and 213870 transitions. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:17:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:17:50,011 INFO L93 Difference]: Finished difference Result 271936 states and 410404 transitions. [2023-11-29 00:17:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:17:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) Word has length 823 [2023-11-29 00:17:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:17:50,325 INFO L225 Difference]: With dead ends: 271936 [2023-11-29 00:17:50,325 INFO L226 Difference]: Without dead ends: 169182 [2023-11-29 00:17:50,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:17:50,448 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 906 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:17:50,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1970 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:17:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169182 states. [2023-11-29 00:18:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169182 to 94480. [2023-11-29 00:18:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94480 states, 70468 states have (on average 1.4195379463018676) internal successors, (100032), 71029 states have internal predecessors, (100032), 20971 states have call successors, (20971), 3040 states have call predecessors, (20971), 3040 states have return successors, (20971), 20410 states have call predecessors, (20971), 20971 states have call successors, (20971) [2023-11-29 00:18:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94480 states to 94480 states and 141974 transitions. [2023-11-29 00:18:05,153 INFO L78 Accepts]: Start accepts. Automaton has 94480 states and 141974 transitions. Word has length 823 [2023-11-29 00:18:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:05,154 INFO L495 AbstractCegarLoop]: Abstraction has 94480 states and 141974 transitions. [2023-11-29 00:18:05,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 1 states have call successors, (131), 1 states have call predecessors, (131), 1 states have return successors, (131), 1 states have call predecessors, (131), 1 states have call successors, (131) [2023-11-29 00:18:05,155 INFO L276 IsEmpty]: Start isEmpty. Operand 94480 states and 141974 transitions. [2023-11-29 00:18:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 00:18:05,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:05,185 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:05,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 00:18:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:18:05,385 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:05,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 643272723, now seen corresponding path program 1 times [2023-11-29 00:18:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796587517] [2023-11-29 00:18:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:05,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:18:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344039963] [2023-11-29 00:18:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:05,451 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:05,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:18:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:06,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 00:18:06,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:18:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 19196 proven. 372 refuted. 0 times theorem prover too weak. 14492 trivial. 0 not checked. [2023-11-29 00:18:07,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:18:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 34060 backedges. 780 proven. 381 refuted. 0 times theorem prover too weak. 32899 trivial. 0 not checked. [2023-11-29 00:18:07,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:18:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796587517] [2023-11-29 00:18:07,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:18:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344039963] [2023-11-29 00:18:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344039963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:18:07,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:18:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-11-29 00:18:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296921873] [2023-11-29 00:18:07,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:18:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:18:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:18:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:18:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:18:07,968 INFO L87 Difference]: Start difference. First operand 94480 states and 141974 transitions. Second operand has 20 states, 19 states have (on average 13.842105263157896) internal successors, (263), 18 states have internal predecessors, (263), 7 states have call successors, (185), 4 states have call predecessors, (185), 9 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2023-11-29 00:18:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:18:24,794 INFO L93 Difference]: Finished difference Result 193238 states and 288043 transitions. [2023-11-29 00:18:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 00:18:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 13.842105263157896) internal successors, (263), 18 states have internal predecessors, (263), 7 states have call successors, (185), 4 states have call predecessors, (185), 9 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) Word has length 823 [2023-11-29 00:18:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:18:24,979 INFO L225 Difference]: With dead ends: 193238 [2023-11-29 00:18:24,979 INFO L226 Difference]: Without dead ends: 99028 [2023-11-29 00:18:25,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1656 GetRequests, 1627 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=312, Invalid=618, Unknown=0, NotChecked=0, Total=930 [2023-11-29 00:18:25,076 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1105 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:18:25,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 2173 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 00:18:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99028 states. [2023-11-29 00:18:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99028 to 94752. [2023-11-29 00:18:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94752 states, 70672 states have (on average 1.39863029205343) internal successors, (98844), 71233 states have internal predecessors, (98844), 20971 states have call successors, (20971), 3108 states have call predecessors, (20971), 3108 states have return successors, (20971), 20410 states have call predecessors, (20971), 20971 states have call successors, (20971) [2023-11-29 00:18:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94752 states to 94752 states and 140786 transitions. [2023-11-29 00:18:39,355 INFO L78 Accepts]: Start accepts. Automaton has 94752 states and 140786 transitions. Word has length 823 [2023-11-29 00:18:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:18:39,356 INFO L495 AbstractCegarLoop]: Abstraction has 94752 states and 140786 transitions. [2023-11-29 00:18:39,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 13.842105263157896) internal successors, (263), 18 states have internal predecessors, (263), 7 states have call successors, (185), 4 states have call predecessors, (185), 9 states have return successors, (186), 7 states have call predecessors, (186), 7 states have call successors, (186) [2023-11-29 00:18:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 94752 states and 140786 transitions. [2023-11-29 00:18:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2023-11-29 00:18:39,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:18:39,375 INFO L195 NwaCegarLoop]: trace histogram [131, 131, 131, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:18:39,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 00:18:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:18:39,575 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:18:39,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:18:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -617644527, now seen corresponding path program 1 times [2023-11-29 00:18:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:18:39,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474245307] [2023-11-29 00:18:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:18:39,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:18:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255613594] [2023-11-29 00:18:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:18:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:18:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:18:39,628 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:18:39,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13173927-8670-4e93-8150-c40b6b5deb53/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:18:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:18:40,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 00:18:40,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:19:04,080 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:19:12,086 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 00:19:32,375 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:19:41,379 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 00:20:01,919 WARN L293 SmtUtils]: Spent 8.00s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:20:09,925 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:20:31,393 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 00:20:43,733 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:21:00,029 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:21:11,107 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 00:21:31,322 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:21:39,331 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:21:58,468 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 00:22:18,737 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 00:22:26,744 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:22:41,367 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 00:23:01,686 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:23:09,693 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:23:19,963 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 00:23:40,664 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:23:48,671 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:24:13,704 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 00:24:34,204 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 00:24:42,211 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:24:55,839 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 00:25:16,356 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:25:24,362 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:25:39,482 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:25:47,488 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 00:26:07,654 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:26:20,020 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 00:26:32,155 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:26:52,358 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:27:12,448 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 00:27:33,220 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:27:41,228 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:27:52,744 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 00:28:13,105 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:28:21,112 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:28:34,471 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 00:28:54,758 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 00:29:02,765 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:29:17,443 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)