./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu --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 1b12db86960fa9dc6b9cfa8223c629c146a6be8798d3651a94f684c115400abd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:07:07,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:07:07,091 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:07:07,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:07:07,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:07:07,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:07:07,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:07:07,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:07:07,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:07:07,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:07:07,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:07:07,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:07:07,152 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:07:07,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:07:07,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:07:07,155 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:07:07,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:07:07,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:07:07,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:07:07,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:07:07,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:07:07,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:07:07,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:07:07,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:07:07,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:07:07,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:07:07,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:07:07,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:07:07,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:07,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:07:07,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:07:07,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:07:07,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:07:07,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:07:07,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:07:07,176 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:07:07,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:07:07,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:07:07,176 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:07:07,177 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_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b12db86960fa9dc6b9cfa8223c629c146a6be8798d3651a94f684c115400abd [2023-11-19 08:07:07,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:07:07,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:07:07,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:07:07,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:07:07,525 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:07:07,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-11-19 08:07:10,551 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:07:10,841 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:07:10,842 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-11-19 08:07:10,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/data/312fa49c1/f81bfd087d5c44c0ac42c8dc4409addf/FLAGbdfd2faea [2023-11-19 08:07:10,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/data/312fa49c1/f81bfd087d5c44c0ac42c8dc4409addf [2023-11-19 08:07:10,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:07:10,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:07:10,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:10,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:07:10,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:07:10,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:10" (1/1) ... [2023-11-19 08:07:10,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d57b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:10, skipping insertion in model container [2023-11-19 08:07:10,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:07:10" (1/1) ... [2023-11-19 08:07:10,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:07:11,141 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_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i[916,929] [2023-11-19 08:07:11,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:11,291 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:07:11,303 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_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-95.i[916,929] [2023-11-19 08:07:11,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:07:11,382 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:07:11,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11 WrapperNode [2023-11-19 08:07:11,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:07:11,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:11,384 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:07:11,384 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:07:11,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,467 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 359 [2023-11-19 08:07:11,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:07:11,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:07:11,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:07:11,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:07:11,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:07:11,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:07:11,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:07:11,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:07:11,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (1/1) ... [2023-11-19 08:07:11,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:07:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:11,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:07:11,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:07:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:07:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:07:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:07:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:07:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:07:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:07:11,807 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:07:11,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:07:12,646 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:07:12,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:07:12,666 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:07:12,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:12 BoogieIcfgContainer [2023-11-19 08:07:12,676 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:07:12,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:07:12,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:07:12,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:07:12,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:07:10" (1/3) ... [2023-11-19 08:07:12,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1886c903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:12, skipping insertion in model container [2023-11-19 08:07:12,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:07:11" (2/3) ... [2023-11-19 08:07:12,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1886c903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:07:12, skipping insertion in model container [2023-11-19 08:07:12,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:07:12" (3/3) ... [2023-11-19 08:07:12,692 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-95.i [2023-11-19 08:07:12,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:07:12,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:07:12,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:07:12,780 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;@6578287, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:07:12,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:07:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 99 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-19 08:07:12,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-19 08:07:12,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:12,813 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:12,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:12,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1176489335, now seen corresponding path program 1 times [2023-11-19 08:07:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:12,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143113326] [2023-11-19 08:07:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143113326] [2023-11-19 08:07:13,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:07:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502613623] [2023-11-19 08:07:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:13,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:13,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:07:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:13,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:07:13,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2023-11-19 08:07:13,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:13,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502613623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:13,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:13,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:07:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871784741] [2023-11-19 08:07:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:13,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:07:13,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:07:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:13,887 INFO L87 Difference]: Start difference. First operand has 151 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 99 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-19 08:07:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:13,948 INFO L93 Difference]: Finished difference Result 294 states and 548 transitions. [2023-11-19 08:07:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:07:13,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 311 [2023-11-19 08:07:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:13,962 INFO L225 Difference]: With dead ends: 294 [2023-11-19 08:07:13,962 INFO L226 Difference]: Without dead ends: 146 [2023-11-19 08:07:13,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:07:13,976 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:13,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-19 08:07:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-19 08:07:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.5212765957446808) internal successors, (143), 94 states have internal predecessors, (143), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-11-19 08:07:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 243 transitions. [2023-11-19 08:07:14,049 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 243 transitions. Word has length 311 [2023-11-19 08:07:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:14,050 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 243 transitions. [2023-11-19 08:07:14,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2023-11-19 08:07:14,051 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 243 transitions. [2023-11-19 08:07:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-19 08:07:14,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:14,060 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:14,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:14,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1755216465, now seen corresponding path program 1 times [2023-11-19 08:07:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594785454] [2023-11-19 08:07:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:14,436 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:14,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807266769] [2023-11-19 08:07:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:14,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:14,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:14,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:07:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:14,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:07:14,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2023-11-19 08:07:14,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:14,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594785454] [2023-11-19 08:07:14,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807266769] [2023-11-19 08:07:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807266769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:14,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:14,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:07:14,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577283589] [2023-11-19 08:07:14,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:14,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:07:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:07:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:14,836 INFO L87 Difference]: Start difference. First operand 146 states and 243 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-19 08:07:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:14,947 INFO L93 Difference]: Finished difference Result 377 states and 631 transitions. [2023-11-19 08:07:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:07:14,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 311 [2023-11-19 08:07:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:14,960 INFO L225 Difference]: With dead ends: 377 [2023-11-19 08:07:14,962 INFO L226 Difference]: Without dead ends: 234 [2023-11-19 08:07:14,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:07:14,970 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 146 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:14,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 474 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:07:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-19 08:07:15,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 231. [2023-11-19 08:07:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 163 states have (on average 1.5828220858895705) internal successors, (258), 164 states have internal predecessors, (258), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-19 08:07:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 388 transitions. [2023-11-19 08:07:15,047 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 388 transitions. Word has length 311 [2023-11-19 08:07:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:15,052 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 388 transitions. [2023-11-19 08:07:15,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2023-11-19 08:07:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 388 transitions. [2023-11-19 08:07:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-19 08:07:15,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:15,075 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:15,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 08:07:15,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:15,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1693176851, now seen corresponding path program 1 times [2023-11-19 08:07:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:15,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930502041] [2023-11-19 08:07:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:15,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827183747] [2023-11-19 08:07:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:15,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:15,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:07:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:15,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:15,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2457 proven. 63 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-11-19 08:07:15,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 84 proven. 63 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-19 08:07:16,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:16,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930502041] [2023-11-19 08:07:16,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827183747] [2023-11-19 08:07:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827183747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:16,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 08:07:16,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190423576] [2023-11-19 08:07:16,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:16,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:07:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:07:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:07:16,322 INFO L87 Difference]: Start difference. First operand 231 states and 388 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-11-19 08:07:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:16,756 INFO L93 Difference]: Finished difference Result 469 states and 782 transitions. [2023-11-19 08:07:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:07:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) Word has length 311 [2023-11-19 08:07:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:16,763 INFO L225 Difference]: With dead ends: 469 [2023-11-19 08:07:16,763 INFO L226 Difference]: Without dead ends: 241 [2023-11-19 08:07:16,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:16,766 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 263 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:16,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 446 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:07:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-19 08:07:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2023-11-19 08:07:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 166 states have (on average 1.5481927710843373) internal successors, (257), 167 states have internal predecessors, (257), 65 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-19 08:07:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 387 transitions. [2023-11-19 08:07:16,802 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 387 transitions. Word has length 311 [2023-11-19 08:07:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:16,804 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 387 transitions. [2023-11-19 08:07:16,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 2 states have call successors, (71), 2 states have call predecessors, (71), 4 states have return successors, (72), 2 states have call predecessors, (72), 2 states have call successors, (72) [2023-11-19 08:07:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 387 transitions. [2023-11-19 08:07:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2023-11-19 08:07:16,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:16,810 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:16,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:17,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:07:17,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:17,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1090539772, now seen corresponding path program 1 times [2023-11-19 08:07:17,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:17,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140372104] [2023-11-19 08:07:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:17,117 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1645421643] [2023-11-19 08:07:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:17,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:17,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:17,119 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:17,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:07:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:17,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:07:17,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3113 proven. 111 refuted. 0 times theorem prover too weak. 1676 trivial. 0 not checked. [2023-11-19 08:07:18,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 177 proven. 114 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2023-11-19 08:07:18,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140372104] [2023-11-19 08:07:18,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:18,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645421643] [2023-11-19 08:07:18,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645421643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:18,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:18,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-19 08:07:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892677613] [2023-11-19 08:07:18,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:18,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:07:18,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:07:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:07:18,626 INFO L87 Difference]: Start difference. First operand 235 states and 387 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 5 states have call successors, (80), 3 states have call predecessors, (80), 7 states have return successors, (81), 5 states have call predecessors, (81), 5 states have call successors, (81) [2023-11-19 08:07:19,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:19,993 INFO L93 Difference]: Finished difference Result 749 states and 1203 transitions. [2023-11-19 08:07:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 08:07:19,995 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 5 states have call successors, (80), 3 states have call predecessors, (80), 7 states have return successors, (81), 5 states have call predecessors, (81), 5 states have call successors, (81) Word has length 312 [2023-11-19 08:07:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:20,003 INFO L225 Difference]: With dead ends: 749 [2023-11-19 08:07:20,004 INFO L226 Difference]: Without dead ends: 517 [2023-11-19 08:07:20,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=534, Unknown=0, NotChecked=0, Total=812 [2023-11-19 08:07:20,009 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1007 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:20,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1078 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:07:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-19 08:07:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 378. [2023-11-19 08:07:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 273 states have (on average 1.5238095238095237) internal successors, (416), 276 states have internal predecessors, (416), 97 states have call successors, (97), 7 states have call predecessors, (97), 7 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-19 08:07:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 610 transitions. [2023-11-19 08:07:20,079 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 610 transitions. Word has length 312 [2023-11-19 08:07:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:20,083 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 610 transitions. [2023-11-19 08:07:20,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 5 states have call successors, (80), 3 states have call predecessors, (80), 7 states have return successors, (81), 5 states have call predecessors, (81), 5 states have call successors, (81) [2023-11-19 08:07:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 610 transitions. [2023-11-19 08:07:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-19 08:07:20,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:20,089 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:20,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:20,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:20,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash 132007506, now seen corresponding path program 1 times [2023-11-19 08:07:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2653194] [2023-11-19 08:07:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:20,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634642243] [2023-11-19 08:07:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:20,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:20,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:20,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:20,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:07:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:20,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:07:20,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:21,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2289 proven. 51 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2023-11-19 08:07:21,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 96 proven. 51 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-19 08:07:22,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:22,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2653194] [2023-11-19 08:07:22,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:22,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634642243] [2023-11-19 08:07:22,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634642243] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:22,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2023-11-19 08:07:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80485609] [2023-11-19 08:07:22,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:22,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:07:22,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:07:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:07:22,304 INFO L87 Difference]: Start difference. First operand 378 states and 610 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2023-11-19 08:07:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:24,216 INFO L93 Difference]: Finished difference Result 2141 states and 3444 transitions. [2023-11-19 08:07:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:07:24,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) Word has length 313 [2023-11-19 08:07:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:24,234 INFO L225 Difference]: With dead ends: 2141 [2023-11-19 08:07:24,235 INFO L226 Difference]: Without dead ends: 1766 [2023-11-19 08:07:24,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:07:24,238 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1011 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:24,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1389 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 08:07:24,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-11-19 08:07:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1431. [2023-11-19 08:07:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1030 states have (on average 1.5019417475728156) internal successors, (1547), 1043 states have internal predecessors, (1547), 370 states have call successors, (370), 30 states have call predecessors, (370), 30 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2023-11-19 08:07:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2287 transitions. [2023-11-19 08:07:24,547 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2287 transitions. Word has length 313 [2023-11-19 08:07:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2287 transitions. [2023-11-19 08:07:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 11 states have internal predecessors, (118), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100) [2023-11-19 08:07:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2287 transitions. [2023-11-19 08:07:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-11-19 08:07:24,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:24,558 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:24,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:24,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:24,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash -146565484, now seen corresponding path program 1 times [2023-11-19 08:07:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56531686] [2023-11-19 08:07:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:24,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814097952] [2023-11-19 08:07:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:24,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:24,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:24,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:24,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:07:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:25,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:07:25,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2469 proven. 81 refuted. 0 times theorem prover too weak. 2350 trivial. 0 not checked. [2023-11-19 08:07:25,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 66 proven. 81 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-19 08:07:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56531686] [2023-11-19 08:07:25,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814097952] [2023-11-19 08:07:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814097952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:25,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 08:07:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152231075] [2023-11-19 08:07:25,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:25,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:07:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:07:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:07:25,622 INFO L87 Difference]: Start difference. First operand 1431 states and 2287 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-11-19 08:07:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:26,198 INFO L93 Difference]: Finished difference Result 2554 states and 4038 transitions. [2023-11-19 08:07:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:07:26,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 313 [2023-11-19 08:07:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:26,212 INFO L225 Difference]: With dead ends: 2554 [2023-11-19 08:07:26,212 INFO L226 Difference]: Without dead ends: 1503 [2023-11-19 08:07:26,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:07:26,217 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 262 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:26,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 427 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:07:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2023-11-19 08:07:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1447. [2023-11-19 08:07:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1042 states have (on average 1.4904030710172744) internal successors, (1553), 1055 states have internal predecessors, (1553), 370 states have call successors, (370), 34 states have call predecessors, (370), 34 states have return successors, (370), 357 states have call predecessors, (370), 370 states have call successors, (370) [2023-11-19 08:07:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2293 transitions. [2023-11-19 08:07:26,499 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2293 transitions. Word has length 313 [2023-11-19 08:07:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:26,500 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2293 transitions. [2023-11-19 08:07:26,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-11-19 08:07:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2293 transitions. [2023-11-19 08:07:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-19 08:07:26,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:26,508 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:26,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:26,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:26,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:26,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -974614615, now seen corresponding path program 1 times [2023-11-19 08:07:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120562731] [2023-11-19 08:07:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:26,790 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547069190] [2023-11-19 08:07:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:26,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:26,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:26,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:07:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:27,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:07:27,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2367 proven. 90 refuted. 0 times theorem prover too weak. 2443 trivial. 0 not checked. [2023-11-19 08:07:27,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:07:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 57 proven. 90 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-11-19 08:07:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120562731] [2023-11-19 08:07:27,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547069190] [2023-11-19 08:07:27,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547069190] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:07:27,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:07:27,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 08:07:27,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187721467] [2023-11-19 08:07:27,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:07:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:07:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:07:27,690 INFO L87 Difference]: Start difference. First operand 1447 states and 2293 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 08:07:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:28,971 INFO L93 Difference]: Finished difference Result 4586 states and 7242 transitions. [2023-11-19 08:07:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:07:28,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) Word has length 314 [2023-11-19 08:07:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:28,995 INFO L225 Difference]: With dead ends: 4586 [2023-11-19 08:07:28,995 INFO L226 Difference]: Without dead ends: 3142 [2023-11-19 08:07:29,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:07:29,005 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 521 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:29,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 945 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:07:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3142 states. [2023-11-19 08:07:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3142 to 1024. [2023-11-19 08:07:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 751 states have (on average 1.4940079893475366) internal successors, (1122), 756 states have internal predecessors, (1122), 242 states have call successors, (242), 30 states have call predecessors, (242), 30 states have return successors, (242), 237 states have call predecessors, (242), 242 states have call successors, (242) [2023-11-19 08:07:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1606 transitions. [2023-11-19 08:07:29,226 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1606 transitions. Word has length 314 [2023-11-19 08:07:29,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:29,227 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1606 transitions. [2023-11-19 08:07:29,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (80), 2 states have call predecessors, (80), 4 states have return successors, (81), 3 states have call predecessors, (81), 3 states have call successors, (81) [2023-11-19 08:07:29,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1606 transitions. [2023-11-19 08:07:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2023-11-19 08:07:29,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:29,233 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:07:29,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:07:29,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:29,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:29,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash -273014741, now seen corresponding path program 1 times [2023-11-19 08:07:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:29,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867752527] [2023-11-19 08:07:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:29,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:29,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285818381] [2023-11-19 08:07:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:29,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:29,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:29,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:29,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c4b7732-ed36-4dc4-a8d1-227a9da2737a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:07:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:29,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:07:29,811 INFO L285 TraceCheckSpWp]: Computing forward predicates...