./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/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_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/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_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/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 d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:00,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:00,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:00,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:00,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:00,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:00,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:00,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:00,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:00,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:00,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:00,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:00,112 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:00,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:00,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:00,114 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:00,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:00,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:00,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:00,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:00,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:00,118 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:00,118 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:00,119 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:00,119 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:00,120 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:00,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:00,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:00,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:00,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:00,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:00,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:00,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:00,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:00,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:00,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:00,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:00,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:00,126 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:00,126 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_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e [2023-11-19 07:55:00,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:00,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:00,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:00,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:00,518 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:00,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2023-11-19 07:55:03,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:03,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:03,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2023-11-19 07:55:03,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/data/7f7dd3b83/b93c3cb8d3f04f19a55624297273b78d/FLAG05cf7fb65 [2023-11-19 07:55:04,018 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/data/7f7dd3b83/b93c3cb8d3f04f19a55624297273b78d [2023-11-19 07:55:04,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:04,028 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:04,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:04,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:04,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:04,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:04,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31e1df3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04, skipping insertion in model container [2023-11-19 07:55:04,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:04,127 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:04,338 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_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2023-11-19 07:55:04,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:04,637 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:04,651 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_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2023-11-19 07:55:04,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:04,773 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:04,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04 WrapperNode [2023-11-19 07:55:04,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:04,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:04,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:04,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:04,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:04,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:04,996 INFO L138 Inliner]: procedures = 26, calls = 128, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 885 [2023-11-19 07:55:04,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:04,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:04,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:04,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:05,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:05,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:05,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:05,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:05,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (1/1) ... [2023-11-19 07:55:05,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:05,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:05,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:55:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:55:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:05,449 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:05,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:06,724 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:06,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:06,751 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:06,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:06 BoogieIcfgContainer [2023-11-19 07:55:06,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:06,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:06,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:06,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:06,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:04" (1/3) ... [2023-11-19 07:55:06,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edc65e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:06, skipping insertion in model container [2023-11-19 07:55:06,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:04" (2/3) ... [2023-11-19 07:55:06,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edc65e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:06, skipping insertion in model container [2023-11-19 07:55:06,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:06" (3/3) ... [2023-11-19 07:55:06,778 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2023-11-19 07:55:06,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:06,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:06,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:06,890 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;@4f28cce3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:06,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 218 states have (on average 1.6192660550458715) internal successors, (353), 219 states have internal predecessors, (353), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-19 07:55:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-11-19 07:55:06,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:06,956 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:06,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1887447529, now seen corresponding path program 1 times [2023-11-19 07:55:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:06,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948535065] [2023-11-19 07:55:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:06,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948535065] [2023-11-19 07:55:07,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:55:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337266631] [2023-11-19 07:55:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:07,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:07,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:07,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:07,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:08,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:55:08,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2023-11-19 07:55:08,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:08,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337266631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:08,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:08,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:08,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911643097] [2023-11-19 07:55:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:08,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:55:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:55:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:08,318 INFO L87 Difference]: Start difference. First operand has 336 states, 218 states have (on average 1.6192660550458715) internal successors, (353), 219 states have internal predecessors, (353), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2023-11-19 07:55:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:08,399 INFO L93 Difference]: Finished difference Result 665 states and 1275 transitions. [2023-11-19 07:55:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:55:08,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) Word has length 721 [2023-11-19 07:55:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:08,415 INFO L225 Difference]: With dead ends: 665 [2023-11-19 07:55:08,415 INFO L226 Difference]: Without dead ends: 332 [2023-11-19 07:55:08,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 720 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 07:55:08,429 INFO L413 NwaCegarLoop]: 574 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, 574 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 07:55:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-19 07:55:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-11-19 07:55:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 215 states have (on average 1.6) internal successors, (344), 215 states have internal predecessors, (344), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2023-11-19 07:55:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 574 transitions. [2023-11-19 07:55:08,584 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 574 transitions. Word has length 721 [2023-11-19 07:55:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:08,587 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 574 transitions. [2023-11-19 07:55:08,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2023-11-19 07:55:08,588 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 574 transitions. [2023-11-19 07:55:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-11-19 07:55:08,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:08,620 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:08,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:55:08,837 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:08,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash -126658029, now seen corresponding path program 1 times [2023-11-19 07:55:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761757054] [2023-11-19 07:55:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:09,083 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:09,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222048027] [2023-11-19 07:55:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:09,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:09,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:09,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:09,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:55:09,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2023-11-19 07:55:09,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:09,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:09,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761757054] [2023-11-19 07:55:09,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222048027] [2023-11-19 07:55:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222048027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:09,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:09,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:09,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002089661] [2023-11-19 07:55:09,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:09,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:09,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:09,975 INFO L87 Difference]: Start difference. First operand 332 states and 574 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:10,137 INFO L93 Difference]: Finished difference Result 855 states and 1471 transitions. [2023-11-19 07:55:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:10,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2023-11-19 07:55:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:10,154 INFO L225 Difference]: With dead ends: 855 [2023-11-19 07:55:10,155 INFO L226 Difference]: Without dead ends: 526 [2023-11-19 07:55:10,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 719 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 07:55:10,159 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 297 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:10,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1323 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:55:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-11-19 07:55:10,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 523. [2023-11-19 07:55:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 333 states have (on average 1.5705705705705706) internal successors, (523), 334 states have internal predecessors, (523), 187 states have call successors, (187), 2 states have call predecessors, (187), 2 states have return successors, (187), 186 states have call predecessors, (187), 187 states have call successors, (187) [2023-11-19 07:55:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 897 transitions. [2023-11-19 07:55:10,284 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 897 transitions. Word has length 721 [2023-11-19 07:55:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:10,287 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 897 transitions. [2023-11-19 07:55:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 897 transitions. [2023-11-19 07:55:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-11-19 07:55:10,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:10,302 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:10,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:10,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:10,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:10,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:10,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1562285713, now seen corresponding path program 1 times [2023-11-19 07:55:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700723721] [2023-11-19 07:55:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:10,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:10,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015444947] [2023-11-19 07:55:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:10,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:10,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:10,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:10,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:55:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:11,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:55:11,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2023-11-19 07:55:14,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:14,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:14,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700723721] [2023-11-19 07:55:14,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:14,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015444947] [2023-11-19 07:55:14,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015444947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:14,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:14,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:55:14,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941316012] [2023-11-19 07:55:14,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:14,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:55:14,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:55:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:14,326 INFO L87 Difference]: Start difference. First operand 523 states and 897 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:14,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:14,901 INFO L93 Difference]: Finished difference Result 1581 states and 2746 transitions. [2023-11-19 07:55:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:55:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2023-11-19 07:55:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:14,919 INFO L225 Difference]: With dead ends: 1581 [2023-11-19 07:55:14,919 INFO L226 Difference]: Without dead ends: 1061 [2023-11-19 07:55:14,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:55:14,927 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 657 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:14,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2264 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:55:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-11-19 07:55:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 993. [2023-11-19 07:55:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 687 states have (on average 1.6593886462882097) internal successors, (1140), 688 states have internal predecessors, (1140), 302 states have call successors, (302), 3 states have call predecessors, (302), 3 states have return successors, (302), 301 states have call predecessors, (302), 302 states have call successors, (302) [2023-11-19 07:55:15,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1744 transitions. [2023-11-19 07:55:15,154 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1744 transitions. Word has length 721 [2023-11-19 07:55:15,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:15,156 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1744 transitions. [2023-11-19 07:55:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1744 transitions. [2023-11-19 07:55:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-11-19 07:55:15,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:15,167 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:15,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:55:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:15,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:15,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1071875620, now seen corresponding path program 1 times [2023-11-19 07:55:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365410210] [2023-11-19 07:55:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:15,505 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935954420] [2023-11-19 07:55:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:15,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:15,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:15,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:55:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:16,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:55:16,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16681 proven. 264 refuted. 0 times theorem prover too weak. 9275 trivial. 0 not checked. [2023-11-19 07:55:17,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 414 proven. 267 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2023-11-19 07:55:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365410210] [2023-11-19 07:55:17,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935954420] [2023-11-19 07:55:17,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935954420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:17,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:17,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:55:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806233221] [2023-11-19 07:55:17,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:55:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:55:17,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:55:17,831 INFO L87 Difference]: Start difference. First operand 993 states and 1744 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 5 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) [2023-11-19 07:55:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:19,145 INFO L93 Difference]: Finished difference Result 1785 states and 3112 transitions. [2023-11-19 07:55:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:55:19,146 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 5 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) Word has length 722 [2023-11-19 07:55:19,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:19,157 INFO L225 Difference]: With dead ends: 1785 [2023-11-19 07:55:19,157 INFO L226 Difference]: Without dead ends: 1037 [2023-11-19 07:55:19,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1431 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=384, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:55:19,167 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1219 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:19,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1376 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:55:19,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-19 07:55:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1025. [2023-11-19 07:55:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 711 states have (on average 1.6343178621659635) internal successors, (1162), 712 states have internal predecessors, (1162), 302 states have call successors, (302), 11 states have call predecessors, (302), 11 states have return successors, (302), 301 states have call predecessors, (302), 302 states have call successors, (302) [2023-11-19 07:55:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1766 transitions. [2023-11-19 07:55:19,329 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1766 transitions. Word has length 722 [2023-11-19 07:55:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:19,332 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1766 transitions. [2023-11-19 07:55:19,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 14 states have internal predecessors, (224), 5 states have call successors, (174), 3 states have call predecessors, (174), 7 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) [2023-11-19 07:55:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1766 transitions. [2023-11-19 07:55:19,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-11-19 07:55:19,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:19,342 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:19,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:19,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:19,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -627974946, now seen corresponding path program 1 times [2023-11-19 07:55:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576264591] [2023-11-19 07:55:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:19,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915737678] [2023-11-19 07:55:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:19,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:19,737 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:19,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:55:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:20,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:55:20,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13204 proven. 177 refuted. 0 times theorem prover too weak. 12839 trivial. 0 not checked. [2023-11-19 07:55:20,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2023-11-19 07:55:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576264591] [2023-11-19 07:55:21,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915737678] [2023-11-19 07:55:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915737678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:21,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:55:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368466087] [2023-11-19 07:55:21,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:55:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:21,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:55:21,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:55:21,734 INFO L87 Difference]: Start difference. First operand 1025 states and 1766 transitions. Second operand has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2023-11-19 07:55:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:25,172 INFO L93 Difference]: Finished difference Result 3821 states and 6593 transitions. [2023-11-19 07:55:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-19 07:55:25,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) Word has length 722 [2023-11-19 07:55:25,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:25,199 INFO L225 Difference]: With dead ends: 3821 [2023-11-19 07:55:25,199 INFO L226 Difference]: Without dead ends: 3213 [2023-11-19 07:55:25,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1434 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=517, Invalid=1553, Unknown=0, NotChecked=0, Total=2070 [2023-11-19 07:55:25,205 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 2045 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:25,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 2940 Invalid, 2973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [777 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 07:55:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2023-11-19 07:55:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 2132. [2023-11-19 07:55:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1628 states have (on average 1.7162162162162162) internal successors, (2794), 1632 states have internal predecessors, (2794), 484 states have call successors, (484), 19 states have call predecessors, (484), 19 states have return successors, (484), 480 states have call predecessors, (484), 484 states have call successors, (484) [2023-11-19 07:55:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3762 transitions. [2023-11-19 07:55:25,515 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3762 transitions. Word has length 722 [2023-11-19 07:55:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:25,517 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3762 transitions. [2023-11-19 07:55:25,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.0) internal successors, (238), 14 states have internal predecessors, (238), 3 states have call successors, (174), 2 states have call predecessors, (174), 4 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2023-11-19 07:55:25,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3762 transitions. [2023-11-19 07:55:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2023-11-19 07:55:25,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:25,528 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:25,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:25,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:25,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 73624928, now seen corresponding path program 1 times [2023-11-19 07:55:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284127433] [2023-11-19 07:55:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:25,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903752822] [2023-11-19 07:55:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:25,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:25,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:25,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:55:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:26,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:55:26,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13244 proven. 354 refuted. 0 times theorem prover too weak. 12622 trivial. 0 not checked. [2023-11-19 07:55:27,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 324 proven. 357 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2023-11-19 07:55:29,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284127433] [2023-11-19 07:55:29,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:29,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903752822] [2023-11-19 07:55:29,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903752822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:29,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:29,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-19 07:55:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856800516] [2023-11-19 07:55:29,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:29,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:55:29,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:55:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:55:29,026 INFO L87 Difference]: Start difference. First operand 2132 states and 3762 transitions. Second operand has 14 states, 13 states have (on average 17.846153846153847) internal successors, (232), 12 states have internal predecessors, (232), 5 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) [2023-11-19 07:55:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:30,174 INFO L93 Difference]: Finished difference Result 2993 states and 5254 transitions. [2023-11-19 07:55:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:55:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 17.846153846153847) internal successors, (232), 12 states have internal predecessors, (232), 5 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) Word has length 722 [2023-11-19 07:55:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:30,189 INFO L225 Difference]: With dead ends: 2993 [2023-11-19 07:55:30,189 INFO L226 Difference]: Without dead ends: 1153 [2023-11-19 07:55:30,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1430 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:55:30,197 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 601 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:30,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1360 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:55:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2023-11-19 07:55:30,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1045. [2023-11-19 07:55:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 726 states have (on average 1.6019283746556474) internal successors, (1163), 727 states have internal predecessors, (1163), 302 states have call successors, (302), 16 states have call predecessors, (302), 16 states have return successors, (302), 301 states have call predecessors, (302), 302 states have call successors, (302) [2023-11-19 07:55:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1767 transitions. [2023-11-19 07:55:30,365 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1767 transitions. Word has length 722 [2023-11-19 07:55:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:30,367 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1767 transitions. [2023-11-19 07:55:30,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 17.846153846153847) internal successors, (232), 12 states have internal predecessors, (232), 5 states have call successors, (175), 3 states have call predecessors, (175), 6 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) [2023-11-19 07:55:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1767 transitions. [2023-11-19 07:55:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-11-19 07:55:30,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:30,377 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:30,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:30,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:30,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 549609309, now seen corresponding path program 1 times [2023-11-19 07:55:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:30,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836561161] [2023-11-19 07:55:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:30,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:30,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11724881] [2023-11-19 07:55:30,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:30,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:30,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:30,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:30,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:55:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:31,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:31,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 12232 proven. 123 refuted. 0 times theorem prover too weak. 13865 trivial. 0 not checked. [2023-11-19 07:55:31,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2023-11-19 07:55:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836561161] [2023-11-19 07:55:32,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11724881] [2023-11-19 07:55:32,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11724881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:32,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:32,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-19 07:55:32,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030523942] [2023-11-19 07:55:32,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:32,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:55:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:55:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:55:32,367 INFO L87 Difference]: Start difference. First operand 1045 states and 1767 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) [2023-11-19 07:55:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:33,112 INFO L93 Difference]: Finished difference Result 1418 states and 2371 transitions. [2023-11-19 07:55:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:55:33,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) Word has length 723 [2023-11-19 07:55:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:33,121 INFO L225 Difference]: With dead ends: 1418 [2023-11-19 07:55:33,121 INFO L226 Difference]: Without dead ends: 759 [2023-11-19 07:55:33,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1438 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 07:55:33,125 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 644 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:33,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1098 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:55:33,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-11-19 07:55:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 743. [2023-11-19 07:55:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 498 states have (on average 1.5622489959839359) internal successors, (778), 498 states have internal predecessors, (778), 230 states have call successors, (230), 14 states have call predecessors, (230), 14 states have return successors, (230), 230 states have call predecessors, (230), 230 states have call successors, (230) [2023-11-19 07:55:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1238 transitions. [2023-11-19 07:55:33,241 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1238 transitions. Word has length 723 [2023-11-19 07:55:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:33,242 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1238 transitions. [2023-11-19 07:55:33,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 2 states have call predecessors, (157), 2 states have call successors, (157) [2023-11-19 07:55:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1238 transitions. [2023-11-19 07:55:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2023-11-19 07:55:33,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:33,252 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:33,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:33,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:33,477 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:33,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:33,478 INFO L85 PathProgramCache]: Analyzing trace with hash -283557859, now seen corresponding path program 1 times [2023-11-19 07:55:33,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:33,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375106994] [2023-11-19 07:55:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:33,621 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573159403] [2023-11-19 07:55:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:33,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:33,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:33,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:33,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:55:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:34,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:55:34,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 11154 proven. 102 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2023-11-19 07:55:34,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 240 proven. 102 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2023-11-19 07:55:35,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:35,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375106994] [2023-11-19 07:55:35,012 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:35,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573159403] [2023-11-19 07:55:35,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573159403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:55:35,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:55:35,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:55:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13594499] [2023-11-19 07:55:35,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:55:35,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:55:35,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:55:35,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:55:35,017 INFO L87 Difference]: Start difference. First operand 743 states and 1238 transitions. Second operand has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-11-19 07:55:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:35,740 INFO L93 Difference]: Finished difference Result 1208 states and 2010 transitions. [2023-11-19 07:55:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:55:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) Word has length 723 [2023-11-19 07:55:35,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:35,749 INFO L225 Difference]: With dead ends: 1208 [2023-11-19 07:55:35,749 INFO L226 Difference]: Without dead ends: 767 [2023-11-19 07:55:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1438 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:55:35,753 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 361 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:35,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1098 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:55:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-19 07:55:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 751. [2023-11-19 07:55:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 504 states have (on average 1.5496031746031746) internal successors, (781), 504 states have internal predecessors, (781), 230 states have call successors, (230), 16 states have call predecessors, (230), 16 states have return successors, (230), 230 states have call predecessors, (230), 230 states have call successors, (230) [2023-11-19 07:55:35,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1241 transitions. [2023-11-19 07:55:35,946 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1241 transitions. Word has length 723 [2023-11-19 07:55:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:35,947 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1241 transitions. [2023-11-19 07:55:35,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.125) internal successors, (217), 8 states have internal predecessors, (217), 3 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (150), 3 states have call predecessors, (150), 3 states have call successors, (150) [2023-11-19 07:55:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1241 transitions. [2023-11-19 07:55:35,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-19 07:55:35,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:35,961 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:35,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:36,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:55:36,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:36,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1933640689, now seen corresponding path program 1 times [2023-11-19 07:55:36,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387525776] [2023-11-19 07:55:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:36,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987569508] [2023-11-19 07:55:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:36,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:36,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:36,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:36,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:55:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:36,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:55:36,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2023-11-19 07:55:36,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387525776] [2023-11-19 07:55:36,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987569508] [2023-11-19 07:55:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987569508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460766487] [2023-11-19 07:55:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:55:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:55:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:55:36,952 INFO L87 Difference]: Start difference. First operand 751 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:37,085 INFO L93 Difference]: Finished difference Result 1597 states and 2710 transitions. [2023-11-19 07:55:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:55:37,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 724 [2023-11-19 07:55:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:37,096 INFO L225 Difference]: With dead ends: 1597 [2023-11-19 07:55:37,096 INFO L226 Difference]: Without dead ends: 1100 [2023-11-19 07:55:37,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 722 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 07:55:37,101 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 337 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:37,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1441 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2023-11-19 07:55:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1097. [2023-11-19 07:55:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 803 states have (on average 1.610211706102117) internal successors, (1293), 804 states have internal predecessors, (1293), 276 states have call successors, (276), 17 states have call predecessors, (276), 17 states have return successors, (276), 275 states have call predecessors, (276), 276 states have call successors, (276) [2023-11-19 07:55:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1845 transitions. [2023-11-19 07:55:37,249 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1845 transitions. Word has length 724 [2023-11-19 07:55:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:37,251 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1845 transitions. [2023-11-19 07:55:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1845 transitions. [2023-11-19 07:55:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-19 07:55:37,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:37,284 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:37,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:37,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:55:37,505 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:37,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:37,505 INFO L85 PathProgramCache]: Analyzing trace with hash 989519309, now seen corresponding path program 1 times [2023-11-19 07:55:37,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:37,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224794075] [2023-11-19 07:55:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:37,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:37,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180552897] [2023-11-19 07:55:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:37,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:37,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:37,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:37,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:55:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:38,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:55:38,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2023-11-19 07:55:39,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224794075] [2023-11-19 07:55:39,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:55:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180552897] [2023-11-19 07:55:39,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180552897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:39,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:39,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:55:39,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775497851] [2023-11-19 07:55:39,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:39,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:55:39,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:39,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:55:39,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:55:39,379 INFO L87 Difference]: Start difference. First operand 1097 states and 1845 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:39,569 INFO L93 Difference]: Finished difference Result 2505 states and 4221 transitions. [2023-11-19 07:55:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:55:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 724 [2023-11-19 07:55:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:39,584 INFO L225 Difference]: With dead ends: 2505 [2023-11-19 07:55:39,584 INFO L226 Difference]: Without dead ends: 1884 [2023-11-19 07:55:39,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:55:39,588 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 216 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:39,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1662 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2023-11-19 07:55:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1882. [2023-11-19 07:55:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1418 states have (on average 1.627644569816643) internal successors, (2308), 1420 states have internal predecessors, (2308), 437 states have call successors, (437), 26 states have call predecessors, (437), 26 states have return successors, (437), 435 states have call predecessors, (437), 437 states have call successors, (437) [2023-11-19 07:55:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 3182 transitions. [2023-11-19 07:55:39,872 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 3182 transitions. Word has length 724 [2023-11-19 07:55:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:39,874 INFO L495 AbstractCegarLoop]: Abstraction has 1882 states and 3182 transitions. [2023-11-19 07:55:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2023-11-19 07:55:39,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 3182 transitions. [2023-11-19 07:55:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-11-19 07:55:39,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:39,885 INFO L195 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:39,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:40,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:55:40,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:40,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1691119183, now seen corresponding path program 1 times [2023-11-19 07:55:40,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:40,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883619712] [2023-11-19 07:55:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:40,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:40,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302045086] [2023-11-19 07:55:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:40,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:40,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:40,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:40,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d72b35a6-828c-4d40-aa0e-f4cdf4f126b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:55:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:40,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:55:40,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 20029 proven. 609 refuted. 0 times theorem prover too weak. 5582 trivial. 0 not checked. [2023-11-19 07:55:44,199 INFO L327 TraceCheckSpWp]: Computing backward predicates...